Water Quality in DEFIANCE, MO (63341)

EPA violation data for public water systems serving ZIP code 63341.

126

Total Violations

83

Health-Based

43

Monitoring / Reporting

121

Resolved

What does this mean?

121 of 126 violations have been resolved. 83 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 43 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.

Water systems: 4 Population served: 360

Violations Detail (126 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Public NoticeMonitoringN/AN/AAug 27, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AAug 27, 2025ResolvedN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AApr 22, 2025ResolvedN/A
Public NoticeMonitoringN/AN/AApr 22, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/ANov 30, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/ANov 30, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/ANov 30, 2024ResolvedN/A
LEAD AND COPPER RULE REVISIONSMonitoringN/AN/AOct 16, 2024ResolvedN/A
Combined Radium (-226 and -228)Health-BasedN/A9.25Sep 30, 2024ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(5)

Public Notice

75

Aug 27Resolved

Public Notice

75

Aug 27Resolved

Consumer Confidence Rule

71

Jun 30Resolved

Public Notice

75

Apr 22Resolved

Public Notice

75

Apr 22Resolved

2024(17)

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

Combined Radium (-226 and -228)

02

Sep 30Resolved

Combined Radium (-226 and -228)

02

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Combined Radium (-226 and -228)

02

Jun 30Resolved

Combined Radium (-226 and -228)

02

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Combined Radium (-226 and -228)

02

Mar 31Resolved

Combined Radium (-226 and -228)

02

Mar 31Resolved

Combined Radium (-226 and -228)

02

Mar 31Resolved

Combined Radium (-226 and -228)

02

Mar 31Resolved

How Does This Compare?

DEFIANCE (63341) has 126 recorded violations, including 83 health-based. 5 remain unresolved. Consider testing your tap water independently for added peace of mind.

Recommended Water Filters

Based on the contaminants detected in your area, these filter types may help improve your water quality.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove.

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