Water Quality in IRWIN, ID (83428)

EPA violation data for public water systems serving ZIP code 83428.

133

Total Violations

56

Health-Based

77

Monitoring / Reporting

123

Resolved

What does this mean?

123 of 133 violations have been resolved. 56 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 77 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: 18 Population served: 1,290

Violations Detail (133 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
E. COLIMonitoring0N/AAug 31, 2025ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform RuleHealth-BasedN/AN/AApr 30, 2025ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/AApr 30, 2025ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/AApr 30, 2025ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/AApr 30, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2024ResolvedN/A
E. COLIMonitoring0N/AAug 31, 2024ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/AAug 31, 2024ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations

Lead & Copper Levels

Violation Timeline

2025(5)

E. COLI

19

Aug 31Resolved

Revised Total Coliform Rule

1A

Apr 30Resolved

Revised Total Coliform Rule

1A

Apr 30Resolved

Revised Total Coliform Rule

1A

Apr 30Resolved

Revised Total Coliform Rule

1A

Apr 30Resolved

2024(25)

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

E. COLI

19

Aug 31Resolved

E. COLI

19

Aug 31Resolved

E. COLI

19

Aug 31Resolved

E. COLI

19

Jul 31Resolved

E. COLI

19

Jul 31Resolved

E. COLI

19

Jul 31Resolved

E. COLI

19

Jun 30Resolved

E. COLI

19

Jun 30Resolved

E. COLI

19

Jun 30Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

Groundwater Rule

45

Feb 23Resolved

How Does This Compare?

IRWIN (83428) has 133 recorded violations, including 56 health-based. 10 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.

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.

Nearby ZIP Codes

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