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Is Davenport Tap Water Safe to Drink?

Yes! Generally Safe to Drink*

LAST UPDATED: 7:47 pm, August 2, 2022
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Table of Contents

Can You Drink Tap Water in Davenport?

Yes, Davenport's tap water is generally considered safe to drink as Davenport has no active health based violations of the Safe Drinking Water Act (SDWA) that we are aware of. Other factors such as lead piping in a home, or low levels of pollutants on immunocompromised individuals, should also be considered, however. To find more recent info we might have, you can check out our boil water notice page, the city's water provider website, or Davenport's local Twitter account.

According the EPA’s ECHO database, from April 30, 2019 to June 30, 2022, Davenport's water utility, Iowa-American Wtr Co-Davenport, had 0 violations of the Safe Drinking Water Act. For more details on the violations, please see our violation history section below. The last violation for Davenport was resolved on June 30, 2011. This assessment is based on the Iowa-American Wtr Co-Davenport water system, other water systems in the city may have different results.

While tap water that meets the EPA health guidelines generally won’t make you sick to your stomach, it can still contain regulated and unregulated contaminants present in trace amounts that could potentially cause health issues over the long-run. These trace contaminants may also impact immunocompromised and vulnerable individuals.

The EPA is reviewing if it’s current regulations around pollutant levels in tap water are strict enough, and the health dangers posed by unregulated pollutants, like PFAS.

Water Quality Report for Davenport Tap Water

The most recent publicly available numbers for measured contaminant levels in Davenport tap water are in its 2020 Water Quality Report. As you can see, there are levels which the EPA considers to be acceptable, but being below the maximum allowable level doesn’t necessarily mean the water is healthy.

Lead in tap water, for example, is currently allowed at up to 15ppb by the EPA, but it has set the ideal goal for lead at zero. This highlights how meeting EPA standards doesn’t necessarily mean local tap water is healthy.

EPA regulations continue to change as it evaluates the long term impacts of chemicals and updates drinking water acceptable levels. The rules around arsenic, as well as, lead and copper are currently being re-evaluated.

There are also a number of "emerging" contaminants that are not currently. For example, PFAS (Per- and polyfluoroalkyl substances), for which the EPA has issued a health advisory. PFAS are called "forever chemicals" since they tend not to break down in the environment or the human body and can accumulate over time.

We recommend looking at the contaminants present in Davenport's water quality reports, or getting your home's tap water tested to see if you should be filtering your water.

Davenport Tap Water Safe Drinking Water Act Violation History - Prior 10 Years

Below is a ten year history of violations for the water system named Iowa-American Wtr Co-Davenport for Davenport in Iowa. For more details please see the "What do these Violations Mean?" section below.

From April 1, 2011 to June 30, 2011, Davenport had 1 health-based Safe Drinking Water Act violation with the violation category being Maximum Contaminant Level Violation, more specifically, the violation code was Maximum Contaminant Level Violation, Average which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: TTHM.

Is there Lead in Davenport Water?

Based on the EPA’s ECHO Database, 90% of the samples taken from the Davenport water system, Iowa-American Wtr Co-Davenport, between sample start date and sample end date, were at or below, 0.0 mg/L of lead in Davenport water. This is 0% of the 0.015 mg/L action level. This means 10% of the samples taken from Davenport contained more lead.

While Davenport water testing may have found 0.0 mg/L of lead in its water, that does not mean your water source has the same amount. The amount of lead in water in a city can vary greatly from neighborhood to neighborhood, or even building to building. Many buildings, particularly older ones, have lead pipes or service lines which can be a source of contamination. To find out if your home has lead, we recommend getting you water tested.

No amount of lead in water is healthy, only less dangerous. As lead accumulates in our bodies over time, even exposure to relatively small amounts can have negative health effects. For more information, please check out our Lead FAQ page.

Are there PFAS in Davenport Tap Water?

Currently, testing tap water for PFAS isn’t mandated on a national level. We do have a list of military bases where there have been suspected or confirmed leaks. There appears to be at least one military base - Rock Island Arsenal - near Davenport with suspected leaks.

With many potential sources of PFAS in tap water across the US, the best information we currently have about which cities have PFAS in their water is this ewg map, which you can check to see if Davenport has been evaluated for yet.

Our stance is better safe than sorry, and that it makes sense to try to purify the tap water just in case.

Davenport SDWA Violation History Table - Prior 10 Years

Compliance Period Status Health-Based? Category Code Code Rule Code Contaminant Code Rule Group Code Rule Family Code
04/01/2011 - 06/30/2011 Resolved Yes Maximum Contaminant Level Violation (MCL) Maximum Contaminant Level Violation, Average (02) Stage 1 Disinfectants and Disinfection Byproducts Rule (210) TTHM (2950) Disinfectants and Disinfection Byproducts Rule (200) Stage 1 Disinfectants and Disinfection Byproducts Rule (210)

What do these Violations Mean?

Safe Drinking Water Act Violations categories split into two groups, health based, and non-health based. Generally, health based violations are more serious, though non-health based violations can also be cause for concern.

Health Based Violations

  1. Maximum contaminant levels (MCLs) - maximum allowed contaminant level was exceeded.
  2. Maximum residual disinfectant levels (MRDLs) - maximum allowed disinfectant level was exceeded.
  3. Other violations (Other) - the exact required process to reduce the amounts of contaminants in drinking water was not followed.

Non-Health Based Violations

  1. Monitoring and reporting violations (MR, MON) - failure to conduct the required regular monitoring of drinking water quality, and/or to submit monitoring results on time.
  2. Public notice violations (Other) - failure to immediately alert consumers if there is a serious problem with their drinking water that may pose a risk to public health.
  3. Other violations (Other) - miscellaneous violations, such as failure to issue annual consumer confidence reports or maintain required records.

SDWA Table Key

Field Description
Compliance Period Dates of the compliance period.
Status Current status of the violation.
  • Resolved - The violation has at least one resolving enforcement action. In SDWIS, this indicates that either the system has returned to compliance from the violation, the rule that was violated was no longer applicable, or no further action was needed.
  • Archived - The violation is not Resolved, but is more than five years past its compliance period end date. In keeping with the Enforcement Response Policy, the violation no longer contributes to the public water system's overall compliance status. Unresolved violations are also marked as Archived when a system ceases operations (becomes inactive).
  • Addressed - The violation is not Resolved or Archived, and is addressed by one or more formal enforcement actions.
  • Unaddressed - The violation is not Resolved or Archived, and has not been addressed by formal enforcement.
show details
Health-Based? Whether the violation is health based.
Category Code
The category of violation that is reported.
  • TT - Treatment Technique Violation
  • MRDL - Maximum Residual Disinfectant Level
  • Other - Other Violation
  • MCL - Maximum Contaminant Level Violation
  • MR - Monitoring and Reporting
  • MON - Monitoring Violation
  • RPT - Reporting Violation
show details
Code A full description of violation codes can be accessed in the SDWA_REF_CODE_VALUES (CSV) table.
Contaminant Code A code value that represents a contaminant for which a public water system has incurred a violation of a primary drinking water regulation.
Rule Code Code for a National Drinking Water rule.
  • 110 - Total Coliform Rule
  • 121 - Surface Water Treatment Rule
  • 122 - Long Term 1 Enhanced Surface Water Treatment Rule
  • 123 - Long Term 2 Enhanced Surface Water Treatment Rule
  • 130 - Filter Backwash Rule
  • 140 - Ground Water Rule
  • 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule
  • 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule
  • 230 - Total Trihalomethanes
  • 310 - Volatile Organic Chemicals
  • 331 - Nitrates
  • 332 - Arsenic
  • 333 - Inorganic Chemicals
  • 320 - Synthetic Organic Chemicals
  • 340 - Radionuclides
  • 350 - Lead and Copper Rule
  • 410 - Public Notice Rule
  • 420 - Consumer Confidence Rule
  • 430 - Miscellaneous
  • 500 - Not Regulated
  • 111 - Revised Total Coliform Rule
show details
Rule Group Code Code that uniquely identifies a rule group.
  • 120 - Surface Water Treatment Rules
  • 130 - Filter Backwash Rule
  • 140 - Groundwater Rule
  • 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule
  • 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule
  • 230 - Total Trihalomethanes
  • 310 - Volatile Organic Chemicals
  • 320 - Synthetic Organic Chemicals
  • 330 - Inorganic Chemicals
  • 340 - Radionuclides
  • 350 - Lead and Copper Rule
  • 400 - Other
  • 500 - Not Regulated
  • 110 - Total Coliform Rules
  • 410 - Public Notice Rule
  • 420 - Consumer Confidence Rule
  • 430 - Miscellaneous
show details
Rule Family Code Code for rule family.
  • 100 - Microbials
  • 200 - Disinfectants and Disinfection Byproducts Rule
  • 300 - Chemicals
  • 400 - Other
  • 500 - Not Regulated
show details

For more clarification please visit the EPA's data dictionary.

Davenport Water - Frequently Asked Questions

WHAT ARE WE DOING?
Our priority is to provide reliable, quality drinking water service for customers. The source of supply is an important part of that mission. We work to understand and reduce potential risks to your drinking water supply. By following Iowa-American Water’s Source Water Protection Plan (a voluntary program to identify and address potential threats to drinking water supplies) we can proactively identify and resolve concerns within our watershed in order to further protect our source of supply. Being on the lookout for potential hazards provides an additional layer of safety to our customers. Here are a few of the efforts underway to protect our shared water resources: Community Involvement: We have a proactive public outreach program to help spread the word and get people involved. This includes school education and other community activities. For several years, we have partnered with students at Davenport West High School on a Water for Kenya initiative. Students are working to invent, test and deliver a clean water filtration system for use in a Kenya village. Environmental Grant Program: Each year, we fund projects that improve water resources in our local communities. Pharmaceutical Collection: We currently sponsor pharmaceutical drop boxes in Clinton County for residents to safely dispose of unwanted drugs for free. This helps keep pharmaceutical products from entering water supplies.
HOW TO READ THIS TABLE (FROM LEFT TO RIGHT)
Some unregulated substances are measured, but maximum contaminant levels have not been established by the government. These contaminants are shown for your information. NOTE: Regulated contaminants not listed in this table were not found in the treated water supply. LEAD AND COPPER MONITORING PROGRAM - At least 1 tap water sample collected at customers’ taps every 3 years TOTAL COLIFORM RULE - At least 120 samples collected each month in the distribution system NOTE: Coliforms are bacteria that are naturally present in the environment and are used as an indicator of the general bacteriological quality of the water. We are reporting the highest percentage of positive samples / highest number of positive samples in any month.
HOW DO I CONTACT DAVENPORT CUSTOMER SERVICE?
To contact customer service for the Davenport water provider, Iowa-American Wtr Co-Davenport, please use the information below.
By Mail: JOSHUA LIGHTON
5201 GRAND AVE
DAVENPORT, IA, 52807
HOW TO PAY BILL FOR IOWA-AMERICAN WTR CO-DAVENPORT
Already have an account?

Existing customers can login to their Iowa-American Wtr Co-Davenport account to pay their Davenport water bill by clicking here.

Want to create a new account?

If you want to pay your Iowa-American Wtr Co-Davenport bill online and haven't made an account yet, you can create an account online. Please click here to create your account to pay your Davenport water bill.

Want to pay without an account?

If you don't want to make an account, or can't remember your account, you can make a one-time payment towards your Davenport water bill without creating an account using a one time payment portal with your account number and credit or debit card. Click here to make a one time payment.

HOW TO START & STOP DAVENPORT WATER SERVICE
Starting Your Service

Moving to a new house or apartment in Davenport means you will often need to put the water in your name with Iowa-American Wtr Co-Davenport. In order to put the water in your name, please click the link to the start service form below. Start service requests for water bills typically take two business days.

Start Service Form

Want to create a new account?

Leaving your house or apartment in Davenport means you will likely need to take your name off of the water bill with Iowa-American Wtr Co-Davenport. In order to take your name off the water bill, please click the link to the stop service form below. Stop service for water bills requests typically take two business days.

Stop Service Form

The estimated price of bottled water

$1.75 in USD (1.5-liter)

USER SUBMITTED RATINGS

Davenport tap water
  • Drinking Water Pollution and Inaccessibility 29% Low
  • Water Pollution 63% High
  • Drinking Water Quality and Accessibility 71% High
  • Water Quality 38% Low

The above data is comprised of subjective, user submitted opinions about the water quality and pollution in Davenport, measured on a scale from 0% (lowest) to 100% (highest).

Related FAQS

Davenport Water Quality Report (Consumer Confidence Report)

The EPA mandates that towns and cities consistently monitor and test their tap water. They must report their findings in an annual Consumer Confidence Report. Below is the most recent water quality report from Davenport's Water. If you would like to see the original version of the report, please click here.

2020 Annual

QUAD CITIES DISTRICT

PWS ID: 8222001

A message from Iowa American Water’s President

RANDY MOORE

President,

Iowa American Water

.

Dear Iowa American Water Customer,

Having access to safe, reliable water service is something that can be easily taken for granted. At Iowa American Water, it’s our top priority.

I am pleased to share with you our 2020 Consumer Confidence Report, which is a testament to the hard work and dedication of our professional employees. As you read through this annual water quality information, you will see that we continue to supply high quality drinking water service to keep your life flowing.

We monitor and test your water at multiple points throughout our process of drawing it from its source, treating it to meet drinking water standards, and distributing it through our pipeline systems. In fact, we test for about 100 regulated contaminants as required by state and federal drinking water standards.

QUALITY: We remain committed to protecting our sources of drinking water. We utilize advanced technology and detection methods that are paving the way for source water protection across the country. Quality water that meets or surpasses all state and federal water quality regulations doesn’t happen by chance. It requires having the right team of experts and technologies in place. Delivering high quality, reliable water service to your tap around the clock also requires significant investment in our water infrastructure.

SERVICE: Last year, we invested $22.8 million to upgrade our water treatment and pipeline systems in the communities we serve in eastern Iowa. These investments allowed us to improve water quality, water pressure, and service reliability for our customers.

VALUE: While costs to provide water service continue to increase across the country, our investments help us provide high quality water service that remains an exceptional value for such an essential service.

We hope our commitment to you and our passion for water shines through in this report detailing the source and quality of your drinking water in 2020. We will continue to work to keep your life flowing – today, tomorrow and for future generations.

Proud to be your local water service provider,

This report contains important information about your drinking water. Translate it or speak with someone who understands it at

  1. 641-2108,
    Monday-Friday, 7 a.m. to 7 p.m.

Randy A. Moore Iowa American Water

2

Once again, we proudly present our Annual Water Quality Report, also referred to as a Consumer Confidence Report (CCR). CCRs let consumers know what contaminants, if any, were detected in their drinking water as well as related potential health effects. CCRs also include details about where your water comes from and how it is treated. Additionally, they educate customers on what it takes to deliver safe drinking water and highlight the need to protect drinking water sources.

Iowa American Water is committed to delivering high quality drinking water service. To that end, we remain vigilant in meeting the challenges of source water protection, water conservation, environmental compliance, sustainability and community education while continuing to serve the needs of all our water users.

A Message from our President

2

What is a Consumer Confidence Report

3

Mark of Excellence

4

About Your Drinking Water Supply

5

What are the Sources of Contaminants?

6

Protecting Your Drinking Water Supply

7

About Lead

8

Important Information About Your Water

9-11

  • Chloramines
  • Fluoride
  • Cryptosporidium
  • Nitrates
  • Unregulated Contaminant Monitoring Rule
  • PFAS Monitoring

Water Quality Results

12

Definitions of Terms Used in Document

13

Water Quality Results: Detailed Charts

14-17

About Us

18

Contact Us

19

3

Just as Iowa American Water is investing in research and testing, we also understand the importance of investing in the infrastructure that provides high-quality water service to you. Last year alone, we invested $22.8 million to improve our water treatment and pipeline systems.

4

WHERE YOUR WATER COMES FROM

In the Iowa Quad Cities, the raw drinking water supply is surface water drawn from the Mississippi River. Water for the Iowa Quad Cities is taken from the Mississippi River and treated in Iowa American Water’s state-of-the-art East River Station Treatment Facility. Our high-tech water treatment plant uses some of the best equipment and technology available to the water industry. The treatment process utilizes conventional coagulation and settling processes and a parallel Superpulsator for clarification, followed by granular activated carbon filtration. The granular activated carbon filtration process is cited by the U.S. EPA as one of the most effective treatment technologies for the removal of organic chemicals, such as farm pesticides and industrial wastes. It is also highly effective in eliminating many taste and odor problems. Learn more about local waterways in your area at https://watersgeo.epa.gov/mywaterway.

Protecting Your Water Source

The Source Water Assessment Program (SWAP) is a result of the 1996 amendments to the Federal Safe Drinking Water Act (SDWA). Those amendments require all states to establish a program to assess the vulnerability of public water systems to potential contamination. The Iowa Department of Natural Resources (IDNR) has prepared Source Water Assessment Reports and Summaries for all public water systems in Iowa.

In 2003, the Iowa DNR completed an assessment of the Mississippi River watershed in this area. The study looked at the drainage area and ranked its vulnerability to contamination. Rivers, streams, and reservoirs are highly susceptible to contamination because of surface runoff. Our water source is considered most vulnerable to contaminants from agricultural and urban runoff. These contaminants include nutrients such as nitrate and phosphorus and other man-made and natural contaminants. A summary report is available upon request from Iowa American Water by contacting Josh Lighton, Supervisor Water Quality & Environmental Compliance, at (563) 726-0939, or by email at Joshua.Lighton@amwater.com.

QUICK FACTS ABOUT THE IOWA QUAD CITIES DISTRICT SYSTEM

Communities served: Bettendorf, Blue Grass, Davenport, LeClaire, Panorama Park, Riverdale and surrounding portions of Scott County

Water source:

Mississippi River

Average amount of water supplied to customers on a daily basis: Approximately 20-million gallons per day

Disinfection treatment: Surface water supplies are treated with chloramines to maintain a healthy disinfection residual throughout the distribution system.

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FOR MORE INFORMATION

To learn more about your water supply and local activities, visit us online at

www.iowaamwater.com or contact Josh

Lighton, Water Quality & Environmental Compliance Supervisor at (563) 726-0939

WHAT ARE WE DOING?

Our priority is to provide reliable, quality drinking water service for customers. The source of supply is an important part of that mission. We work to understand and reduce potential risks to your drinking water supply. By following Iowa-American Water’s Source Water Protection Plan (a voluntary program to identify and address potential threats to drinking water supplies) we can proactively identify and resolve concerns within our watershed in order to further protect our source of supply. Being on the lookout for potential hazards provides an additional layer of safety to our customers.

Here are a few of the efforts underway to protect our shared water resources:

Community Involvement: We have a proactive public outreach program to help spread the word and get people involved. This includes school education and other community activities. For several years, we have partnered with students at Davenport West High School on a Water for Kenya initiative. Students are working to invent, test and deliver a clean water filtration system for use in a Kenya village.

Environmental Grant Program: Each year, we fund projects that improve water resources in our local communities.

Pharmaceutical Collection: We

currently sponsor pharmaceutical drop boxes in Clinton County for residents to safely dispose of unwanted drugs for free. This helps keep pharmaceutical products from entering water supplies.

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CHECK YOUR PLUMBING AND SERVICE LINE

If you live in an older home, consider having a licensed plumber check your plumbing for lead. If your service line is made of lead, and you’re planning to replace it, be sure to contact our Lead Program coordinator Barb Latchaw at 1-563-468-9210. .

*In Blue Grass, Iowa American Water owns and

maintains the service line between the water main8 and shut off valve.

CHLORAMINES

Chloramines are an Iowa and federally-approved alternative to free chlorine for water disinfection. Chloramines can reduce disinfection by-product formation and may help reduce concerns related to taste. Chloramines are also used by many American Water systems across the country and many other water utilities nationally.

Chloramines have the same effect as chlorine for typical water uses with the exception that chloramines must be removed from water used in kidney dialysis and fish tanks or aquariums.

Treatments to remove chloramines are different than treatments for removing chlorine. Please contact your physician or dialysis specialist for questions pertaining to kidney dialysis water treatment. Contact your pet store or veterinarian for questions regarding water used for fish and other aquatic life. You may also contact Josh Lighton, Water Quality & Environmental Compliance Supervisor at (563) 726-0939 for more chloramine information.

FLUORIDE

Fluoride is a naturally occurring substance. It can be present in drinking water from two sources:

  1. By nature; when groundwater comes into contact with fluoride-containing minerals naturally present in the earth; or
  2. By a water purveyor through addition of fluoride to the water they are providing in the distribution system.

The Quad Cities District has naturally-occurring fluoride in its source of supply, the Mississippi River. The background fluoride level typically seen is 0.35 parts per million (ppm) . At our treatment plant, fluoride is adjusted to achieve an optimal fluoride level of 0.7 ppm to comply with the state’s Water Fluoridation Standards. The naturally- occurring fluoride. This fluoride concentration remains consistent throughout the distribution system year-round.

If you have any questions on fluoride, please contact Josh Lighton, Water Quality & Environmental Compliance Supervisor at (563) 726-0939.

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CRYPTOSPORIDIUM

Cryptosporidium is a microbial pathogen found in surface water throughout the U.S. Although filtration removes Cryptosporidium, the most commonly-used filtration methods cannot guarantee 100 percent removal. Our monitoring indicates the presence of these organisms in our source water and/or finished water. Current test methods do not allow us to determine if the organisms are dead or if they are capable of causing disease. Ingestion of Cryptosporidium may cause cryptosporidiosis, an abdominal infection. Symptoms of infection include nausea, diarrhea, and abdominal cramps. Most healthy individuals can overcome the disease within a few weeks. However, immuno-compromised people, infants and small children, and the elderly are at greater risk of developing life-threatening illness. We encourage immuno-compromised individuals to consult their doctor regarding appropriate precautions to take to avoid infection. Cryptosporidium must be ingested to cause disease, and it may be spread through means other than drinking water.

NITRATES

Nitrate in drinking water at levels above 10 mg/L is a health risk for infants of less than six months of age. Such nitrate levels in drinking water can interfere with the capacity of the infant’s blood to carry oxygen, resulting in serious illness. Symptoms include shortness of breath and blueness of the skin. Nitrate levels above 10 mg/L may also affect the ability of the blood to carry oxygen in other individuals, such as pregnant women and those with certain specific enzyme deficiencies. Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant or you are pregnant, you should ask for advice from your health care provider.

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UNREGULATED CONTAMINANT MONITORING RULE (UCMR)

The EPA created the Unregulated Contaminant Monitoring Rule (UCMR) to assist them in determining the occurrence of unregulated contaminants in drinking water and whether new regulations are warranted. The first Unregulated Contaminants Monitoring Rule (UCMR1) testing was completed in 2003 for a list of contaminants specified by the EPA. Unregulated contaminants are those for which the EPA has not established drinking water standards. UCMR2 testing was conducted between November 2008 and August 2009, and UCMR3 assessment monitoring was conducted between January 2013 and December 2016. The fourth list of contaminants to monitor as part of the UCMR was published by the EPA in December 2016. UCMR4 testing began in 2018 and will continue until 2020. The results from the UCMR monitoring are reported directly to the EPA. The results of this monitoring are incorporated in the data tables in this report as appropriate.

For more information, contact our Customer Service Center at 1-866-641-2108.

PFAS Monitoring

PFAS refers to per- and polyfluoroalkyl substances, a class of synthetic chemicals, manufactured for industrial applications and commercial household products such as: non-stick cookware; waterproof and stain resistant fabrics and carpets; firefighting foam and cleaning products. The properties that make these chemicals useful in so many of our every-day products also resist breaking down and therefore persist in the environment. Exposure may be from food, food packaging, consumer products, house dust, indoor and outdoor air, drinking water and at workplaces where PFAS are made or used.

Iowa American Water is currently performing voluntary sampling to better understand certain occurrence of PFAS levels in drinking water sources. This testing allows us to understand how our water compares against the non- enforceable Health Advisory Level set by USEPA of 70 nanograms per liter or parts per trillion for a combination of two PFAS compounds, PFOA and PFOS. Testing also allows Iowa American Water to be better prepared if the USEPA or state environmental regulator develop a drinking water standard for those PFAS for which we have USEPA approved testing methods.

The science and regulation of PFAS and other contaminants is always evolving, and Iowa American Water strives to be a leader in research and development. PFAS contamination is one of the most rapidly changing areas in the drinking water field. We have invested in our own independent research, as well as engaging with other experts in the field to understand PFAS occurrence in the environment. We are also actively assessing treatment technologies that can effectively remove PFAS from drinking water, because we believe that

investment in research is critically important to addressing11 this issue.

WATER QUALITY STATEMENT

We are pleased to report that during calendar year 2020, the results of testing of your drinking water complied with all state and federal drinking water requirements.

For your information, we have compiled a list in the table below showing the testing of your drinking water during 2020. The Iowa Department of Natural Resources allows us to monitor for some contaminants less than once per year because the concentration of the contaminants does not change frequently. Some of our data, though representative, are more than one year old.

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Iowa American Water conducts extensive monitoring to determine if your water meets all water quality standards. The detections of our monitoring are reported in the following tables. While most monitoring was conducted in 2020, certain substances are monitored less than once per year because the levels do not change frequently. For help with interpreting the tables below, see the “Definition of Terms Used in This Report” on the previous page.

HOW TO READ THIS TABLE (FROM LEFT TO RIGHT)

  • Starting with Substance (with units), read across.
  • Year Sampled is usually in 2020 but may be a prior year.
  • A Yes under Compliance Achieved means the amount of the substance met government requirements.
  • MCLG/MRDLG is the goal level for that substance (this may be lower than what is allowed).
  • MCL/MRDL/TT/Action Level shows the highest level of substance (contaminant) allowed.
  • Highest, Lowest or Average Compliance Result represents the measured amount detected.
  • Range tells the highest and lowest amounts measured.
  • Single Sample (SS) conveys the results shown are from the testing of one sample.
  • Typical Source tells where the substance usually originates.

Some unregulated substances are measured, but maximum contaminant levels have not been established by the government. These contaminants are shown for your information.

NOTE: Regulated contaminants not listed in this table were not found in the treated water supply.

LEAD AND COPPER MONITORING PROGRAM - At least 1 tap water sample collected at customers’ taps every 3 years

Substance

Year Sampled

Compliance

MCLG

Action Level

90th Percentile

No. of Homes

Homes Above

Typical Source

(with units)

Achieved

(AL)

Sampled

Action Level

 

 

 

 

 

 

 

 

 

 

 

 

 

Lead (ppb)

2018

Yes

0

15

1.00

50

0

Corrosion of household plumbing systems.

Copper (ppm)

2018

Yes

1.3

1.3

0.102

50

0

Corrosion of household plumbing systems.

 

 

 

 

 

 

 

 

 

TOTAL COLIFORM RULE - At least 120 samples collected each month in the distribution system

Substance

Year Sampled

Compliance

MCLG

MCL

Highest Percentage OR Highest

Typical Source

(with units)

Achieved

No. of Samples

 

 

 

 

 

 

 

 

*MCL = Less than 5%

 

 

 

 

 

 

OR

 

 

Total Coliform

2020

Yes

NA

MCL = No more than

1

Naturally present in the environment.

 

 

 

 

5 positive monthly

 

 

 

 

 

 

sample

 

 

E. Coli

2020

Yes

NA

TT = No confirmed

0

Human and animal fecal waste.

samples

 

 

 

 

 

 

NOTE: Coliforms are bacteria that are naturally present in the environment and are used as an indicator of the general bacteriological quality of the water. We are reporting the highest percentage

of positive samples / highest number of positive samples in any month.

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DISINFECTION BYPRODUCTS - Collected in the Distribution System

Substance

Year

Compliance

MCLG

MCL

Highest

Range

Typical Source

(with units)

Sampled

Achieved

Compliance Result

Detected

 

 

 

Total

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trihalomethanes

2020

Yes

NA

80

31.00

29 to 34

By-product of drinking water disinfection.

(TTHMs) (ppb)

 

 

 

 

 

 

 

Haloacetic Acids

2020

Yes

NA

60

24.00

18 to 28

By-product of drinking water disinfection.

(HAAs) (ppb)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: Compliance is based on the running annual average at each location. The Highest Compliance Result reflects the highest average at any location and the Range Detected reflects all samples from this year used to calculate the running annual average.

DISINFECTANTS - Collected in the Distribution System and at the Treatment Plant

Substance

Year

Compliance

MCLG

MCL

Highest

Range

Typical Source

(with units)

Sampled

Achieved

Compliance Result

Detected

 

 

 

Chlorine (ppm)

 

 

 

 

 

 

 

(Distribution

2020

Yes

MRDLG = 4

4.0

3.19 1

3.19 to 3.67

Water additive used to control microbes.

System)

 

 

 

 

 

 

 

1 - Data represents the highest monthly average of chlorine residuals measured throughout our distribution system.

TREATMENT BYPRODUCTS PRECURSOR REMOVAL - Collected at the Treatment Plant

Substance

Year

Compliance

MCLG

MCL

Lowest

Range

Typical Source

(with units)

Sampled

Achieved

Compliance Result

Detected

 

 

 

Total Organic

2020

Yes

NA

TT: > 25% removal

27.7

27.7% to

Naturally present in the environment.

Carbon (TOC)

47.3%

 

 

 

 

 

 

Ratio of Actual /

 

 

 

TT: Running annual

 

 

 

Required

2020

Yes

NA

1.11

1.11 to 1.89

Naturally present in the environment.

average > 1.0

TOC Removal

 

 

 

 

 

 

 

 

 

 

 

 

 

15

TURBIDITY - Collected at the Treatment Plant

Substance

Year

Compliance

MCLG

MCL

Highest

Range

Typical Source

(with units)

Sampled

Achieved

Compliance Result

Detected

 

 

 

 

 

 

 

 

 

 

 

 

2020

Yes

NA

TT: Results < 1.00 NTU

0.43

0.05 to 0.43

Soil runoff.

Turbidity (NTU)

2020

Yes

NA

TT: At least 95% of

99%

NA

Soil runoff.

 

 

samples <0.3 NTU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REGULATED SUBSTANCES - Collected at the Treatment Plant

Substance

Year

Compliance

MCLG

MCL

Highest

Range

Typical Source

(with units)

Sampled

Achieved

Compliance Result

Detected

 

 

 

Fluoride (ppm)

2020

Yes

4

4

0.52

SS

Discharge of drilling wastes; discharge from metal refineries;

erosion of natural deposits.

 

 

 

 

 

 

 

Nitrate (ppm)

2020

Yes

10

10

1.11

SS

Runoff from fertilizer use; industrial or domestic wastewater

discharges; erosion of natural deposits.

 

 

 

 

 

 

 

OTHER SUBSTANCES OF INTEREST - Collected at the Treatment Plant

 

Substance

Year

Compliance

MCLG

Limit

Highest Result

Range

Typical Source

 

(with units)

Sampled

Achieved

Detected

 

 

 

 

 

 

Atrazine (ppb)

2020

Yes

3.0

3.0

0.30

SS

Runoff from herbicide used on row crops

 

Sodium2

2020

NA

NA

NA

17

SS

Erosion of natural deposits; Added to water during treatment

 

process

 

 

 

 

 

 

 

 

1

- Substances with Secondary MCLs do not have MCLGs and are not legally enforceable; these limits are primarily established to address aesthetic concerns.

2

- For healthy individuals the sodium intake from water is not important because a much greater intake of sodium takes place from salt in the diet. However, sodium levels above the

recommended upper limit may be of concern to individuals on a sodium restricted diet.

 

 

 

3

- USEPA's Health Advisories are non-enforceable and provide technical guidance to states agencies and other public health officials on health effects, analytical methodologies, and

treatment technologies associated with drinking water contamination.

 

 

 

 

16

UNREGULATED CONTAMINANT MONITORING RULE (UCMR)

Unregulated contaminants are those for which the EPA has not established drinking water standards. The purpose of unregulated contaminant monitoring is to assist the EPA in determining the occurrence of unregulated contaminants in drinking water and whether future regulation is necessary. Every five years, the EPA issues a new list of no more than 30 unregulated contaminants to be monitored.

ADDITIONAL WATER QUALITY PARAMETERS OF INTEREST - Water Leaving the Treatment Facility)

Parameter

Units

Average Result

Range Detected

Typical Source

 

 

 

 

 

Bromochloroacetic Acid

ppb

2.7

ND to 7.9

By-product of drinking water disinfection

Bromodichloroacetic acid

ppb

3.9

ND to 13

By-product of drinking water disinfection

Chlorodibromoacetic acid

ppb

2.9

ND to 8.3

By-product of drinking water disinfection

Dibromoacetic Acid

ppb

2.3

ND to 8.4

By-product of drinking water disinfection

Dichloroacetic Acid

ppb

4.6

ND to 13

By-product of drinking water disinfection

Monobromoacetic Acid

ppb

4.0

0.27 to 7.8

By-product of drinking water disinfection

Total Haloacetic Acids

ppb

23.1

18.3 to 26.7

By-product of drinking water disinfection

Total Haloacetic Acids - Br

ppb

2.52

3.22 to 5.22

By-product of drinking water disinfection

Trichloroacetic Acid

ppb

5.8

ND to 13

By-product of drinking water disinfection

2-Methoxyethanol

ppb

6.5

ND to 13

Used as a solvent in varnishes, dyes, resins, airplane deicing solutions. It is also used

in organometallic chemistry synthesis.

 

 

 

 

Manganese*

ppb

2.1

0.74 to 4.8

Naturally-occurring elemental metal; largely used in aluminum alloy production.

Essential dietary element.

 

 

 

 

 

 

 

 

 

* Manganese has a Secondary MCL of 50 ppb.

PER- AND POLYFLUOROALKYL SUBSTANCES

UNREGULATED PERFLUORINATED COMPOUNDS

Parameter

Units

Average Result

Range Detected

Typical Source

 

 

 

 

Used for its emulsifier and surfactant properties in or as fluoropolymers (such as Teflon),

Perfluorooctanoic Acid (PFOA)

ppt

2.6

SS

fire fighting foams, cleaners, cosmetics, lubricants, paints, polishes, adhesives and

 

 

 

 

photographic films

Perfluorooctanesulfonic Acid

ppt

3.2

SS

Manmade chemical; used in products for stain, grease, heat and water resistance

(PFOS)

 

 

 

 

17

18

WATER INFORMATION SOURCES

 

Iowa American Water

 

www.iowaamwater.com

 

Iowa Department of Natural Resources (IDNR):

 

www.iowadnr.gov/

 

Iowa Department of Public Health:

 

www.idph.iowa.gov/

 

Clinton County Health Department:

 

www.clintoncounty-ia.gov/Health_Department

 

Scott County Health Department:

 

www.scottcountyiowa.gov/health

 

United States Environmental Protection Agency (USEPA):

 

www.epa.gov/safewater

 

Safe Drinking Water Hotline: (800) 426-4791

 

Centers for Disease Control and Prevention: www.cdc.gov

 

American Water Works Association: www.awwa.org

 

Water Quality Association: www.wqa.org

 

National Library of Medicine/National Institute of Health:

19

www.nlm.nih.gov/medlineplus/drinkingwater.html

 

Contaminants


Iowa-American Water Company - Davenport

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Iowa Department of Natural Resources, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2019 - March 2019), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

Utility details

  • Serves: 137201
  • Data available: 2012-2017
  • Data Source: Surface water
  • Total: 17

Contaminants That Exceed Guidelines

  • Bromodichloromethane
  • Chloroform
  • Chromium (hexavalent)
  • Dibromochloromethane
  • Dichloroacetic acid
  • Nitrate
  • Total trihalomethanes (TTHMs)
  • Trichloroacetic acid

Other Detected Contaminants

  • 1%2C4-Dioxane
  • Atrazine
  • Chromium (total)
  • Fluoride
  • Haloacetic acids (HAA5)
  • Monobromoacetic acid
  • Monochloroacetic acid
  • Strontium
  • Vanadium

Reminder

Always take extra precautions, the water may be safe to drink when it leaves the sewage treatment plant but it may pick up pollutants during its way to your tap. We advise that you ask locals or hotel staff about the water quality. Also, note that different cities have different water mineral contents.

Sources and Resources

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