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Is Rochester Tap Water Safe to Drink?

Yes! Generally Safe to Drink*

LAST UPDATED: 7:49 pm, July 26, 2022
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Table of Contents

Can You Drink Tap Water in Rochester?

Yes, Rochester's tap water is generally considered safe to drink as Rochester 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 Rochester's local Twitter account.

According the EPA’s ECHO database, from April 30, 2019 to June 30, 2022, Rochester's water utility, Rochester, had 0 violations of the Safe Drinking Water Act. For more details on the violations, please see our violation history section below. This assessment is based on the Rochester 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 Rochester Tap Water

The most recent publicly available numbers for measured contaminant levels in Rochester 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 Rochester's water quality reports, or getting your home's tap water tested to see if you should be filtering your water.

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

Below is a ten year history of violations for the water system named Rochester for Rochester in Minnesota. For more details please see the "What do these Violations Mean?" section below.

Is there Lead in Rochester Water?

Based on the EPA’s ECHO Database, 90% of the samples taken from the Rochester water system, Rochester, between sample start date and sample end date, were at or below, 0.006 mg/L of lead in Rochester water. This is 40.0% of the 0.015 mg/L action level. This means 10% of the samples taken from Rochester contained more lead.

While Rochester water testing may have found 0.006 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 Rochester 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 no military bases near Rochester 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 Rochester 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.

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.

Rochester Water - Frequently Asked Questions

HOW TO READ THE
The tables below show the contaminants we found last year or the most recent time we sampled for that con- taminant. They also show the levels of those contami- nants and the Environmental Protection Agency’s limits. Substances that we tested for but did not find are not included in the tables. We sample for some contaminants less than once a year because their levels in water are not expected to change from year to year. If we found any of these contaminants the last time we sampled for them, we included them in the tables on the following pages with the detection date.
HOW CAN YOU LEARN TO SAVE WATER, ENERGY, AND MONEY?
on television, on our YouTube channel, and on our Facebook page.
HOW DO I CONTACT ROCHESTER CUSTOMER SERVICE?
To contact customer service for the Rochester water provider, Rochester, please use the information below.
By Mail: 4000 East River Road NE
Rochester, MN, 55906-2813
HOW TO PAY BILL FOR ROCHESTER
Already have an account?

Existing customers can login to their Rochester account to pay their Rochester water bill by clicking here.

Want to create a new account?

If you want to pay your Rochester 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 Rochester 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 Rochester 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 ROCHESTER WATER SERVICE
Starting Your Service

Moving to a new house or apartment in Rochester means you will often need to put the water in your name with Rochester. 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 Rochester means you will likely need to take your name off of the water bill with Rochester. 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

USER SUBMITTED RATINGS

Rochester tap water
  • Drinking Water Pollution and Inaccessibility 33% Low
  • Water Pollution 47% Moderate
  • Drinking Water Quality and Accessibility 67% High
  • Water Quality 53% Moderate

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

Related FAQS

Rochester 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 Rochester's Water. If you would like to see the original version of the report, please click here.

In our 23rd annual

Drinking Water Quality Report,

we are pleased to announce that water

provided by Rochester Public Utilities (RPU)

meets all State and Federal drinking water standards. RPU is dedicated to one clear goal – Quality First.

With a focus on customer service and efficiency in operations, we continue to strive for excellence through effective water quality programs that will ensure a safe and reliable drinking water supply for years to come. This report contains the results of monitoring done on your drinking water for the

period from January 1 to December 31, 2020.

The purpose of this report is to advance consumers’

understanding of drinking water and heighten awareness of the need to protect our precious water resources.

Source of Water

Water is pumped from 31 deep groundwater wells located throughout the city. Most wells are 24 inches in diameter and extend 400-1,000 feet in depth. Water in the Rochester municipal system is drawn from water-bearing rock layers called aquifers. An aquifer is any type of geologic material, such as sand or sandstone, which can supply water to wells or springs. Most of Rochester’s water is drawn from the Jordan Aquifer, a deep sedimentary unit that underlies much of southeastern Minnesota. Water is also drawn from several multi-formation wells including: Prairie du Chien-Jordan, Prairie du Chien-Wonewoc, Jordan- Wonewoc, and Prairie du Chien-Mt. Simon aquifers.

Rochester works hard to provide you with safe and reliable drinking water that meets federal and state water quality requirements. The purpose of this report is to provide you with information on your drinking water and how to protect our precious water resources.

Contact Todd Osweiler, Environmental & Regulatory Affairs Coordinator, at 507-280-1589 or tosweiler@ rpu.org if you have questions about Rochester’s drink- ing water. You can also ask for information about how you can take part in decisions that may affect water quality.

The U.S. Environmental Protection Agency sets safe drinking water standards. These standards limit the amounts of specific contaminants allowed in drinking water. This ensures that tap water is safe to drink for most people. The U.S. Food and Drug Administration regulates the amount of certain contaminants in bottled water. Bottled water must provide the same public health protection as public tap water.

Drinking water, including bottled water, may reason- ably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency’s Safe Drinking Water Hotline at 1-800-426-4791.

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Water Treatment

Rochester’s water quality is especially high due to the depth of the wells and the quality of the source; there- fore there is little need for treatment. At each of our wells, the following water treatment products are added to the groundwater before it enters into the water distribution system:

  • Fluoridation
    Fluoride is nature’s cavity fighter, with small amounts present naturally in many drinking water sources. There is an overwhelming weight of credible, peer- reviewed, scientific evidence that fluoridation reduces tooth decay and cavities in children and adults, even when there is availability of fluoride from other sources, such as fluoride toothpaste and mouth rinses. Since studies show that optimal fluoride levels in drinking water benefit public health, municipal community water systems adjust the level of fluoride in the water to a concentration of 0.5 to 0.9 parts per million (ppm), with an optimal fluoridation goal of 0.7 ppm to protect your teeth. Fluoride levels below 2.0 ppm are not expected to increase the risk of a cosmetic condition known as enamel fluorosis.
    State of Minnesota requires all municipal water systems add fluoride to the drinking water to promote strong teeth and to prevent tooth decay. Over 3,000 fluoride

tests were performed in 2020 at different residential and business sites around the city with an average level of 0.7 ppm. The Maximum Contaminant Level (MCL) and Maximum Contaminant Level Goal (MCLG) for fluoride is 4 ppm.

  • Disinfection
    A small amount of chlorine is necessary to ensure the water is free of bacteria, viruses, or fungi in the dis- tribution system. Total Chlorine is measured weekly at the 25 different sites around the city averaging 0.82 ppm. The Maximum Residual Disinfectant Level (MRDL) and the Maximum Residual Disinfectant Level Goal (MRDLG) for Chlorine is 4 ppm.
  • Corrosion Control
    Ortho/Poly phosphate is added to our water to help pre- vent “rusty” water. A concentration of approximately 0.5 ppm is maintained in the distribution system. Ortho/Poly phosphate is also used for corrosion control, by coating distribution mains and household piping to prevent the leaching of lead and copper from house- hold plumbing into the drinking water.

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Compliance with National Primary Drinking Water Regulations

Minnesota’s primary drinking water sources are ground- water and surface water. Groundwater is the water found in aquifers beneath the surface of the land. Groundwater supplies all of Rochester’s and 75 percent of Minnesota’s drinking water. Surface water is the water in lakes, rivers, and streams above the surface of the land. Surface water supplies 25 percent of Minnesota’s drinking water.

Contaminants can get in drinking water sources from the natural environment and from people’s daily activities. There are five main types of contaminants in drinking water sources.

  • Microbial contaminants such as viruses, bacteria, and parasites. Sources include sewage treatment plants, septic systems, agricultural livestock operations, pets, and wildlife.
  • Inorganic contaminants include salts and metals from natural sources (e.g. rock and soil), oil and gas production, mining and farming operations, urban stormwater runoff, and wastewater discharges.
  • Pesticides and herbicides are chemicals used to reduce or kill unwanted plants and pests. Sources include agriculture, urban stormwater runoff, and commercial and residential properties.
  • Organic chemical contaminants include synthetic and volatile organic compounds. Sources include industrial processes and petroleum production, gas stations, urban stormwater runoff, and septic systems.
  • Radioactive contaminants such as radium, thorium, and uranium isotopes come from natural sources (e.g. radon gas from soils and rock), mining operations, and oil and gas production.

The Minnesota Department of Health provides infor- mation about your drinking water source(s) in a source water assessment, including:

  • How Rochester is protecting your drinking water source(s);
  • Nearby threats to your drinking water sources;
  • How easily water and pollution can move from the surface of the land into drinking water sources, based on natural geology and the way wells are constructed.

Find your source water assessment at Source Water Assessments (www.health.state.mn.us/divs/eh/water/swp/ swa) or call 651-201-4700 or 1-800-818-9318 between 8:00 a.m. and 4:30 p.m., Monday through Friday.

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Results of Monitoring

This report contains our monitoring results from January 1 to December 31, 2020.

We work with the Minnesota Department of Health to test drinking water for more than 100 contaminants. It is not unusual to detect contaminants in small amounts. No water supply is ever completely free of contaminants. Drinking water standards protect Minnesotans from substances that may be harmful to their health.

Learn more by visiting the Minnesota Department of Health’s webpage Basics of Monitoring and Testing of Drinking Water in Minnesota (www.health.state.mn.us/ divs/eh/water/factsheet/com/sampling.html).

How to Read the

Water Quality Data Tables

The tables below show the contaminants we found last year or the most recent time we sampled for that con- taminant. They also show the levels of those contami- nants and the Environmental Protection Agency’s limits. Substances that we tested for but did not find are not included in the tables.

We sample for some contaminants less than once a year because their levels in water are not expected to change from year to year. If we found any of these contaminants the last time we sampled for them, we included them in the tables on the following pages with the detection date.

We may have done additional monitoring for contami- nants that are not included in the Safe Drinking Water Act. To request a copy of these results, call the Minnesota Department of Health at 651-201-4700 or 1-800-818- 9318 between 8:00 a.m. and 4:30 p.m., Monday through Friday.

No contaminants were detected at levels that violated State or Federal drinking water standards. However, some contaminants were detected in trace amounts that were below legal limits. The table that follows shows the contaminants that were detected in trace amounts last year. Some contaminants are sampled less frequently than once a year; as a result, not all contaminants were sampled for in 2020. If any of these contaminants were detected the last time they were sampled for, they are included in the table along with the date that the detection occurred. In 2020 we also collected and tested over 1,200 water samples for coliform bacteria, which showed no bacteria present in the water.

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Regulated Substances in the Source Water

Parameter

Units

MCLG

MCL

Range

Avg./

Violation

Typical Source

Results

 

 

 

 

 

 

 

Gross Alpha

pCi/l

0

15.4

0.0 – 3.8

3.8

No

Erosion of natural

deposits.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Discharge of

 

 

 

 

 

 

 

drilling wastes;

Barium

ppm

2

2

0.04

N/A

No

Discharge from

metal refineries;

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Erosion of natural

 

 

 

 

 

 

 

deposits.

Combined

pCi/l

0

5.4

0.0 – 3.6

3.6

No

Erosion of natural

Radium

deposits.

 

 

 

 

 

 

 

 

 

 

 

 

 

Erosion of natural

Fluoride*

ppm

4

4

0.65 –

0.7

No

deposits; Water

0.72

additive to promote

 

 

 

 

 

 

 

 

 

 

 

 

 

strong teeth

Haloacetic

 

 

 

0.00 –

 

 

By-product of

Acids

ppb

0

60

3.5

No

drinking water

5.70

(HAA5)*

 

 

 

 

 

disinfection.

 

 

 

 

 

 

 

 

 

 

 

 

 

Runoff from fertil-

 

 

 

 

 

 

 

izer use; Leaching

Nitrate

ppm

10

10.4

0.00 - 0.44

0.44

No

from septic tanks,

 

 

 

 

 

 

 

sewage; Erosion of

 

 

 

 

 

 

 

natural deposits.

Total triha-

 

 

 

2.80 –

 

 

By-product of

lomethanes

ppb

0

80

9.7

No

drinking water

14.90

(TTHM)*

 

 

 

 

 

disinfection.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Leaching from PVC

Tetrachloro-

ppb

0

5

N/A

0.09

No

pipes; discharge

ethylene

from factories and

 

 

 

 

 

 

 

 

 

 

 

 

 

dry cleaners.

 

 

 

 

 

 

 

 

Total

 

 

 

0.66 –

 

 

Water additive

ppm

4

4

0.82

No

used to control

Chlorine*

0.90

 

 

 

 

 

microbes.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total

Pres-

 

 

 

 

 

Naturally present

ence /

 

 

 

 

 

Coliform

0

>5 %

N/A

0

No

in the

Ab-

Bacteria*

 

 

 

 

 

environment.

sence

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trichloro-

 

 

 

 

 

 

Discharge from

 

 

 

 

 

 

metal degreasing

ethylene

ppb

0

5

N/A

0.04

No

sites and other

(TCE)

 

 

 

 

 

 

 

 

 

 

 

 

factories.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Tested at customer taps

 

 

 

 

 

Regulated Substances

Controlled in the Distribution System

Substance

Units

MCLG

AL

90%

# of sites

Violation

Typical Source

Level

over AL

 

 

 

 

 

 

Lead

 

 

 

 

2

 

Corrosion of household

 

 

 

 

 

plumbing systems;

ppb

0

15

5.5

out of

No

(July 2019)

Erosion of natural

 

 

 

 

50

 

 

 

 

 

 

 

deposits.

 

 

 

 

 

 

 

Copper

 

 

 

 

0

 

Corrosion of household

 

 

 

 

 

plumbing systems;

ppm

0

1.3

0.94

out of

No

(July 2019)

Erosion of natural

 

 

 

 

50

 

 

 

 

 

 

 

deposits.

 

 

 

 

 

 

 

RPU samples and tests for Lead and Copper every 3 years to comply with the

EPA’s Lead & Copper Rule. The next round of sampling and testing is July 2022.

Unregulated Substances in the Source Water

Parameter

Units

SMCL/MCLG

Avg./Results

Effects – Source

 

 

 

 

 

Alkalinity

ppm

N/A

260

Carbonate rocks (limestone)

 

 

 

 

 

Aluminum

ppm

0.05 to 0.2

0.005

Colored water

 

 

 

 

 

Calcium

ppm

N/A

72

Mineral deposits from rock.

 

 

 

 

 

Chloride

ppm

250

4.67

Salty taste

 

 

 

 

 

 

 

 

 

Corrosion of household

Copper

ppm

1.3

0.13

plumbing systems; Erosion

 

 

 

 

of natural deposits.

Group of 6

 

 

 

By-product of drinking

Haloacetic Ac-

ppb

N/A

1.25

water disinfection.

ids (HAA6Br)

 

 

 

 

 

 

 

Group of 9

 

 

 

By-product of drinking

Haloacetic

ppb

N/A

5.65

water disinfection.

Acids (HAA9)

 

 

 

 

 

 

 

Hardness, Total

ppm

N/A

283

Mineral deposits

 

 

 

 

 

Hardness, Total

gpg

N/A

17

Mineral deposits

 

 

 

 

 

Iron

ppm

0.3

0.28

Rusty color, staining,

metallic taste

 

 

 

 

 

 

 

 

Corrosion of household

Lead

ppb

1.5

0

plumbing systems; Erosion

 

 

 

 

of natural deposits.

 

 

 

 

Black-to-brown color,

Manganese

ppb

100

57.8

staining, metallic taste.

 

 

 

 

(range 13.90 – 74.10)

Magnesium

ppm

N/A

24.5

Mineral deposits from rock.

 

 

 

 

 

 

 

 

 

Corrosion, metallic taste if

pH

pH

6.5 to 8.5

7.5

below 6.5; deposits, slippery

 

 

 

 

feel, soda taste if above 8.5

 

 

 

 

Salty taste – Erosion of

Sodium*

ppm

20

16.5

natural deposits. (range

 

 

 

 

1.38 – 16.5)

 

 

 

 

Laxative effect –

Sulfate

ppm

500

46.7

Erosion of natural deposits.

 

 

 

 

(range 12.30 – 46.70)

Total Dissolved

ppm

500

330

Hardness, deposits, colored

Solids

water, staining, salty taste

 

 

 

Turbidity

Ntu

N/A

<1

Refers to how

clear the water is.

 

 

 

 

*Note that home water softening can increase the level of sodium in your water

Key

MCL . . . . . . . . . (Maximum Contaminant Level) Highest level of a contaminant allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.

MCLG . . . . . . . . (Maximum Contaminant Level Goal) Level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.

N/A . . . . . . . . . . Not Applicable.

ND. . . . . . . . . . . Not Detected.

NT . . . . . . . . . . . Not Tested.

ppm . . . . . . . . . Parts per million. ppb . . . . . . . . . . Parts per billion. gpg . . . . . . . . . . Grains per gallon.

PCi/L . . . . . . . . . Pico curies per liter (a measure of radioactivity).

Range . . . . . . . . Lowest to the highest a contaminant was detected in 2020.

AL . . . . . . . . . . . Action Level is the concentration of a contaminant which triggers treatment or another requirement which a water system must follow.

90% Level . . . . . 90% of samples must be below the AL. SMCL . . . . . . . . Secondary Maximum Contaminant Level. Ntu . . . . . . . . . . Nephelometric units.

Avg/Results. . . . Highest Average or Highest Single Test Result.

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Lead in Drinking Water

You may be in contact with lead through paint, water, dust, soil, food, hobbies, or your job. Coming in contact with lead can cause serious health problems for every- one. There is no safe level of lead. Babies, children under six years, and pregnant women are at the highest risk.

Lead is rarely in a drinking water source, but it can get in your drinking water as it passes through lead service lines and your household plumbing system. Rochester provides high quality drinking water, but it cannot control the plumbing materials used in private buildings.

Read below to learn how you can protect yourself from lead in drinking water.

  1. Let the water run for 30-60 seconds before using it for drinking or cooking if the water has not been turned on in over six hours. If you have a lead service line, you may need to let the water run longer. A service line is the underground pipe that brings water from the main water pipe under the street to your home.
    • You can find out if you have a lead service line by contacting your public water system, or you can check by following the steps at: Are your pipes made of lead? Here’s a quick way to find out
      (www.mprnews.org/story/2016/06/24/npr-find- lead-pipes-in-your-home).
    • The only way to know if lead has been reduced by letting it run is to check with a test. If letting the water run does not reduce lead, consider other options to reduce your exposure.
  2. Use cold water for drinking, making food, and making baby formula. Hot water releases more lead from pipes than cold water.
  1. Test your water. In most cases, letting the water run and using cold water for drinking and cooking should keep lead levels low in your drinking water. If you are still concerned about lead, arrange with a laboratory to test your tap water. Testing your water is important if young children or pregnant women drink your tap water.
  2. Treat your water if a test shows your water has high levels of lead after you let the water run.
    • Read about water treatment units:
      Point-of-Use Water Treatment Units for Lead Reduction (www.health.state.mn.us/divs/eh/water/ factsheet/com/poulead.html)

Learn more:

  • Visit Lead in Drinking Water (www.health.state.mn. us/divs/eh/water/contaminants/lead.html#Protect)
  • Visit Basic Information about Lead in Drinking Water (www.epa.gov/safewater/lead)
  • Call the EPA Safe Drinking Water Hotline at 1-800- 426-4791. To learn about how to reduce your contact with lead from sources other than your drinking water, visit Lead Poisoning Prevention: Common Sources (www.health.state.mn.us/divs/eh/lead/sources.html).

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Water Conservation

RPU continues to offer rebates on qualifying efficient equipment purchases to promote and encourage water conservation. For full details and available rebates, visit www.rpu.org. Through RPU’s Conserve & Save® rebate program, a water savings of over 7.3 million gallons was attained in 2020!

How can you learn to save water, energy, and money?

  • Look for Water Conservation Tips in our bi-monthly newsletter, Plugged In.
  • Visit our website at www.rpu.org for more tips and to learn more.
  • Watch TIPS FROM TONY

on television, on our YouTube channel, and on our Facebook page.

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To learn more about the programs and services RPU offers to help you manage, protect, and conserve energy and water, visit our website: www.rpu.org

You can also follow us

on social media:

rochesterpublicutilities

@rpuoutages

@rpualerts

blog.rpu.org

RPU TV

Rochester Public Utilities

4000 East River Road NE Rochester, MN 55906-2813 800-778-3421 | 507-280-1500 www.rpu.org

Printed on Recycled Paper 0521D

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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