Water Quality in Chesterfield, MO (63144)

EPA violation data for public water systems serving ZIP code 63144.

No Health-Based Violations

None of the 3 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are5 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 53% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

9,505

Population

Water Systems

Violations (5yr)

Health-Based

Location

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Water Systems Serving This Area (3)

Mo American St Louis St Charles Counties

Surface water 1,111,000 people served

0 violations

Lead tested: 1 ppb (limit: 15 ppb) ✓

Sunshine Apartments

Groundwater 30 people served

5 violations (5yr)

Lead tested: 0 ppb (limit: 15 ppb) ✓

Heatrex

Groundwater 11 people served

0 violations

Contaminants Found

Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

3 violations

All resolved

Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

1 violation

Has active

LEAD AND COPPER RULE REVISIONSMonitoring

1 violation

Has active

Lead & Copper Levels

Lead (Pb)

Within limit

0 ppb measured Action level: 15 ppb

Sampled: Jul 2025

How Does This Compare?

Chesterfield (63144) has more violations than 53% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 5, most of which are monitoring/reporting issues.

Fewer violations 53th percentile More violations

Water Filter Recommendations

No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.