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Monroe Drinking Water Quality

What's Really in Your Tap Water?

Monroe tap water meets EPA standards, though there are a few things worth knowing. At just 113.5 ppm (6.6 gpg), the water is pleasantly soft. Lead levels test well below the EPA action level. There have been 72 violations recorded over the past 3 years.

B

Generally Safe

Minor compliance issues

6.6 GPG hardness

Lead

Below EPA action level

0ppb
EPA Limit

EPA action level: 15 ppb

Hardness

Moderate water

113.5ppm
0100300+

US Average: 100 ppm

Violations

Past 3 years

72total

All administrative/monitoring

View EPA report →

Is Monroe Tap Water Safe to Drink?

Monroe tap water meets EPA health standards, but the water utility has administrative compliance issues.

Lead — Lead (0 ppb) is well below the EPA action level of 15 ppb.

The data below shows test results from 2 water utilities serving 352K people in the Monroe area.

Based on publicly available data from EPA Water Quality Portal (Various). Water quality can vary by location, building plumbing, and over time. This assessment reflects compliance with federal EPA standards and is not medical advice.

Do I Need a Water Filter?

Based on recent water quality data, a water filter may be beneficial in Monroe. A basic carbon filter can improve taste and reduce common contaminants.

How Hard is Monroe Water?

SoftVery Hard
060120180300+

113.5 ppm

6.6 grains per gallon

Moderate

Impact on Your Home

Shower

Minor dryness possible

Kitchen

Some water spots

Laundry

May need more detergent

Appliances

Minimal scale

Regional Comparison

Monroe
113.5
Connecticut
50
US Average
100

Values in ppm (mg/L as CaCO₃)

Based on 132 water samples from Fairfield County

Your pipes tell a different story

The data above shows what leaves the treatment plant—not what comes out of your faucet. Old pipes, lead solder, and building plumbing can add contaminants the city never tests for. Know exactly what's in your Monroe tap water.

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Water splashing from a kitchen faucet

Lead & Contaminants

Understanding lead levels and water quality violations in Monroe

Lead Test Results

90th Percentile Lead Level

0 ppb

Below EPA Action Level
0EPA Limit (15)30+

Monroe lead levels are well below the EPA action level.

Regular testing is still recommended, as lead can enter water through household plumbing.

Last sampled: 2025-12-31

About Lead in Drinking Water

What is Lead in Water?

According to the EPA, lead is a toxic metal that can dissolve into drinking water from older pipes, solder, and fixtures. It's invisible, tasteless, and odorless, making testing the only way to detect it. The EPA has set an action level of 15 ppb and states there is no safe level of lead exposure.

Potential Health Effects

Children

According to the CDC: developmental delays, learning difficulties, lower IQ, behavioral issues

Adults

According to the EPA: high blood pressure, kidney damage, reproductive issues

How to Reduce Exposure

  • •Run water for 30 seconds to 2 minutes before drinking, especially in the morning
  • •Use cold water for cooking and drinking (hot water dissolves more lead)
  • •Install a NSF-certified filter designed to remove lead
  • •Test your water, especially if your home was built before 1986

EPA Compliance History

Active Violations

Administrative issues pending

Current violations are administrative or monitoring-related. Water quality is not immediately affected, but stay informed about utility updates.

3-Year Violation Summary

72

Total Violations

0

Health-Related

72

Administrative

Active violations pending resolution

Health-Related Violations

Contaminant exceeded EPA maximum contaminant levels. The EPA recommends considering certified filtration.

Administrative Violations

Missed testing deadlines or reporting. Does not indicate water quality issues.

View Full EPA Compliance Report for Monroe

Who Provides Monroe's Water?

Utility Name

AQUARION-EASTERN FAIRFIELD COUNTY

EPA System ID (PWSID)

CT0150011

Primary Water Source

Groundwater

Population Served

352K

View Full EPA Report

Frequently Asked Questions

Common questions about Monroe tap water quality

Based on available data, Monroe tap water meets current EPA drinking water standards with minor compliance issues. While there may be some monitoring violations, there are no significant health-based concerns.
Monroe has moderate water with a hardness of 113.5 ppm (6.6 grains per gallon). undefined
Lead levels (0 ppb) are below the EPA action level of 15 ppb.
Monroe's tap water is provided by AQUARION-EASTERN FAIRFIELD COUNTY. The EPA system ID (PWSID) is CT0150011. The primary water source is Groundwater. You can find official water quality reports and contact information through your local utility.
Based on recent water quality data, a water filter may be beneficial in Monroe. A basic carbon filter can improve taste and reduce common contaminants.
Monroe's water utility has had 72 violations in the past 3 years. Of these, 0 were health-based and 72 were monitoring/reporting related.
Monroe's water utility uses chlorine or chloramine to disinfect the water supply. This is a standard practice required by the EPA to prevent waterborne illness. The taste is usually more noticeable in warm weather or near treatment facilities. To reduce chlorine taste, let water sit in an open pitcher for 30 minutes, use a refrigerator filter, or install a carbon filter on your tap.
Monroe's tap water primarily comes from groundwater sources. The water undergoes treatment at local facilities before being distributed through the municipal water system. The water is provided by AQUARION-EASTERN FAIRFIELD COUNTY.

Nearby Cities in Connecticut

Seymour

Moderate water

Southington

Soft water

Wolcott

Moderate water

Stamford

Moderate water

Berlin

Soft water

Prospect

Moderate water

View all Connecticut cities

This data is for informational purposes only. Water quality can vary by neighborhood and building. For official reports, contact your local water utility or the EPA. Learn about our methodology

Data source: EPA Water Quality Portal (environmental samples, not verified tap water)