Water Quality in Chesterfield, MO (63368)

EPA violation data for public water systems serving ZIP code 63368.

No Health-Based Violations

None of the 19 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are12 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 70% of US ZIP codes.

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

46,966

Population

19

Water Systems

12

Violations (5yr)

0

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)

St Charles Co Pwsd #2 Wright City

All resolved
Groundwater 3,550 people served
3 violations (5yr) · All resolved
Lead tested: 1.14 ppb (limit: 15 ppb)

St Paul Pws

All resolved
Groundwater 1,700 people served
1 violation (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

St Charles County Pwsd 2 Warren

Groundwater 1,192 people served
0 violations

St Charles Co Pwsd 2 Augusta

Groundwater 881 people served
0 violations
Lead tested: 1.47 ppb (limit: 15 ppb)

St Charles County Pwsd 2 North Oak Dr

All resolved
Groundwater 660 people served
2 violations (5yr) · All resolved
Lead tested: 1.26 ppb (limit: 15 ppb)

St Charles Pwsd 2 Foristell

Groundwater 550 people served
1 violation (5yr)
Lead tested: 2.32 ppb (limit: 15 ppb)

Ecm Water & Sewer Authority - Flint Hill

Groundwater 469 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb)

St Charles County Pwsd 2 Dutzow

Groundwater 400 people served
0 violations

Hawks Nest Condo Assn

Groundwater 150 people served
0 violations

St Charles Co Pwsd 2 - Sumac Ridge

All resolved
Groundwater 103 people served
1 violation (5yr) · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Skyway Farm

Groundwater 100 people served
0 violations

St Charles County Pwsd 2 Hickory Trails

Groundwater 50 people served
0 violations

Contaminants Found

Lead and Copper RuleMonitoring

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

4 violations
Has active
Groundwater RuleMonitoring
2 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

2 violations
All resolved
TTHMMonitoring
2 violations
All resolved
Total Haloacetic Acids (HAA5)Monitoring
2 violations
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
1 ppb measured Action level: 15 ppb

Sampled: Jul 2024

How Does This Compare?

Chesterfield (63368) has more violations than 70% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 12, most of which are monitoring/reporting issues.

Fewer violations 70th 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.

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