Water Quality in Bloomington, MN

Bloomington's water has 4 contaminants above health guidelines. We recommend using a certified water filter.

Utility

BLOOMINGTON WATER SYSTEM

People Served

89,987

MCL Violations

0

Last Updated

Apr 17, 2025

Quick Summary

20
Contaminants Tested
4
Above Guidelines
Above EPA Limits
EPA Status
Same as state average

Contaminants Detected

⚠️ Contaminants Above Health Guidelines (4)

What is Total THMs?

Group of contaminants that form in drinking water systems when a disinfectant, typically chlorine, reacts with organic matter

Health Effects

Drinking water standards for total THMs are based on evidence of carcinogenicity in human and animal studies, as well as liver and kidney toxicity observed in animal studies. Individual THMs have been further associated with developmental, immune, spleen, and genotoxicity.

Affected Organs

spleendevelopmentalkidneysimmune-systemcarcinogensliver

Common Sources

Chlorine disinfection interacting with naturally occurring organic matter in distribution systemsTotal THMs are usually higher in surface water than groundwaterThe release of agricultural and industrial chemicals may also contribute to total THMs in drinking water
Last Tested: Apr 17, 2025

What is Chloroform?

Member of trihalomethanes (THMs) that form in water treated with chlorine and is generally the most abundant THM formed in drinking water

Health Effects

Health protective benchmarks for chloroform have been developed based on kidney and liver carcinogenicity observed in animal studies, and liver toxicity observed in occupational studies. The EPA classifies chloroform as a probable human carcinogen based on animal evidence, and there is additional epidemiological evidence that may increase the risk of colon and bladder cancer in humans. Results from animal studies also suggest that exposure to chloroform can cause liver, developmental and immune toxicity. Acute exposure to low levels of chloroform will cause nervous system toxicity.

Affected Organs

developmentalkidneysimmune-systemcarcinogensliver

Common Sources

Chlorine disinfection interacting with naturally occurring organic matter in distribution systemsLevels usually higher in surface water than groundwaterReleased into the environment from chemical manufacturing plants, pulp and paper mills, waste incinerators and wastewater treatment plants
Last Tested: Apr 17, 2025

What is Trichloroacetic Acid (TCA)?

Member of haloacetic acids (HAAs) that form as byproducts when chlorine reacts with organic matter

Health Effects

Health protective benchmarks for TCA in drinking water have been developed based on liver toxicity and carcinogenicity observed in animal studies. EPA has classified TCA as a possible human carcinogen. Developmental toxicity has also been associated with exposure to TCA based on evidence from animal studies.

Affected Organs

developmentalcarcinogensliver

Common Sources

Chlorine disinfection interacting with naturally occurring organic matter in distribution systemsLevels usually higher in surface water than groundwaterIndustrial release or natural chlorination of organic matter
Last Tested: Apr 17, 2025

What is Chromium (VI)?

Chromium VI, also known as hexavalent chromium, is a toxic form of the element chromium. It is a known carcinogen and can cause various health issues when ingested or inhaled. Chromium VI is often used in industrial processes, such as chrome plating, leather tanning, and wood preservation.

Health Effects

Exposure to chromium VI can lead to serious health problems, including lung cancer, respiratory issues, skin irritation, and damage to the liver and kidneys. Long-term exposure can also affect the immune system and lead to reproductive issues.

Affected Organs

LungsSkinLiverKidneysImmune system

Common Sources

Industrial dischargeNatural deposits

Certified Filter Standards

View Recommended Filters →
Last Tested: Apr 17, 2025

Understanding the Data

This data comes from your local water utility testing. The bar charts compare detected levels against health guidelines (HGL). Contaminants above the health guideline are shown by default and may require filtration. All other tested contaminants are within safe levels and can be viewed by expanding the section above.

Recommended Water Filters for Bloomington

Based on Bloomington's water quality data, these NSF-certified filters are recommended to remove contaminants above health guidelines.

Our Pick
BEST LEAD REMOVAL
VRO-3Q VRO-3Q

GHP Group Inc.

VRO-3Q VRO-3Q

(9,525 reviews)
17.06

NSF Certified:

NSF-58

Daily Production

20.3 gpd

Removes 15 contaminants:

Arsenic, Barium, Cadmium, Chromium (Total), Chromium (VI) +10 more

View Details
Highly Rated
BEST LEAD REMOVAL
PUN3RO PUN3RO

GHP Group Inc.

PUN3RO PUN3RO

(1 reviews)
26.37

NSF Certified:

NSF-58

Daily Production

23.3 gpd

Removes 15 contaminants:

Arsenic, Barium, Cadmium, Chromium (Total), Chromium (VI) +10 more

View Details
Highly Rated
BEST LEAD REMOVAL
CMTRO-75[G] CMTRO-75[G]

Solventum Purification Inc.

CMTRO-75[G] CMTRO-75[G]

(3,011 reviews)
17.59

NSF Certified:

NSF-58

Daily Production

23.59 gpd

Removes 15 contaminants:

Arsenic, Barium, Cadmium, Chromium (Total), Chromium (VI) +10 more

View Details
Highly Rated
BEST LEAD REMOVAL
TRO508 TRO508

Senwater Systems, LLC.

TRO508 TRO508

(10,143 reviews)
25.45

NSF Certified:

NSF-58

Daily Production

11 gpd

Removes 17 contaminants:

Arsenic, Barium, Cadmium, Chromium (Total), Chromium (VI) +12 more

View Details

Frequently Asked Questions

Bloomington's water has 4 contaminants above health guidelines. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Bloomington's water.