MyCleanWater

Chesterfield, Missouri Water Quality Report

Water quality data for 4 water systems serving 1,113,079 people.

85
Good
out of 100

Water Source

4
Water Systems
1.1M
People Served
Surface water, Ground water
Water Source

Detected Contaminants

ContaminantDetected LevelEPA Limit (MCL)Health Guideline% of LimitStatus
lithium86.8 No federal limit10.0 ug/L(EPA/USGS HBSL)
868%
Above guideline
PFBA0.005 No federal limit1000.0 ug/L(EWG)
0%
Below guideline

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Compliance & Violations

Active Violations (11)

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Resolved Violations (331)

02

Jul 1, 2025 — Sep 30, 2025

critical

02

Jul 1, 2024 — Sep 30, 2024

critical

02

Jul 1, 2024 — Sep 30, 2024

critical

02

Jul 1, 2024 — Sep 30, 2024

critical

02

Jul 1, 2024 — Sep 30, 2024

critical

+ 326 more resolved violations

Frequently Asked Questions

Is Chesterfield tap water safe to drink?

Chesterfield's water meets all EPA maximum contaminant levels. However, 2 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.

What contaminants are in Chesterfield tap water?

2 contaminants have been detected in Chesterfield's water supply across 4 water systems. See the full contaminant table above for details.

How can I improve my water quality in Chesterfield?

Install a water filter rated for the specific contaminants found in Chesterfield's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.

Does Chesterfield have any water quality violations?

Yes, Chesterfield currently has 11 active violations. See the violations section above for details.