Water Quality in Chesterfield, MO (63376)

EPA violation data for public water systems serving ZIP code 63376.

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

74,962

Population

19

Water Systems

8

Violations (5yr)

1

Health-Based

Location

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Water Systems Serving This Area (19)

Mo American St Louis St Charles Counties

Surface water 1,111,000 people served
0 violations
Lead tested: 1 ppb (limit: 15 ppb)

St Charles County Pwsd 2

All resolved
Purchased surface water 100,587 people served
2 violations (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

St Charles Pws

All resolved
Purchased surface water 73,040 people served
1 violation (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Mo American St Charles

Purchased surface water 73,000 people served
0 violations

St Peters Pws

Purchased surface water 52,575 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

Wentzville Pws

Groundwater 41,784 people served
0 violations
Lead tested: 4.77 ppb (limit: 15 ppb)

Ofallon Pws

All resolved
Purchased surface water 32,515 people served
1 violation (5yr) · All resolved
Lead tested: 1.48 ppb (limit: 15 ppb)

Missouri Cities-Warson Hills

Groundwater 430 people served
0 violations

Memc Llc

1 health-based
Groundwater 350 people served
1 violation (5yr) · 1 health-based · All resolved
Lead tested: 4.16 ppb (limit: 15 ppb)

St Charles Community College Rwic

Groundwater 300 people served
0 violations

Highway 79 Zephyr Serv

Groundwater 300 people served
0 violations

St Charles Emergency Operation Center

Purchased surface water 115 people served
0 violations

St Charles Co Police Training Facility

Groundwater 35 people served
3 violations (5yr)
Lead tested: 3.41 ppb (limit: 15 ppb)

Relax Away Bay Condos

Groundwater 25 people served
0 violations

Smileys Subdivision # 2

Groundwater 25 people served
0 violations

Shell Oil Co-St Peters

Groundwater 25 people served
0 violations

Dardenne Lake Shell

Groundwater 25 people served
0 violations

Central Park Of Eolia

Groundwater 25 people served
0 violations

St Judes Subdivision

Groundwater 8 people served
0 violations

Contaminants Found

Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-Based
1 violation
All resolved
Groundwater RuleMonitoring
2 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

2 violations
All resolved
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

1 violation
All resolved
Public NoticeMonitoring
1 violation
Has active
Nitrate-NitriteMonitoring
1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
1 ppb measured Action level: 15 ppb

Sampled: Jul 2024

How Does This Compare?

Chesterfield (63376) has more violations than 62% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 8.

Fewer violations 62th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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