Water Quality in IDAHO FALLS, ID (83401)

EPA violation data for public water systems serving ZIP code 83401.

556

Total Violations

71

Health-Based

485

Monitoring / Reporting

523

Resolved

What does this mean?

523 of 556 violations have been resolved. 71 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 485 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: 130 Population served: 59,086

Violations Detail (556 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Public NoticeMonitoringN/AN/ASep 1, 2025ActiveN/A
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
E. COLIMonitoring0N/AJul 5, 2025ActiveSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/AJul 5, 2025ActiveSevere gastrointestinal illness; may be fatal in vulnerable populations
LEAD AND COPPER RULE REVISIONSMonitoringN/AN/AJul 1, 2025ActiveN/A
LEAD AND COPPER RULE REVISIONSMonitoringN/AN/AJul 1, 2025ActiveN/A
Nitrate-NitriteHealth-BasedN/A12Jun 30, 2025ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(28)

Public Notice

75

Sep 1Active

Revised Total Coliform Rule

3B

Aug 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

E. COLI

34

Jul 5Active

E. COLI

34

Jul 5Active

LEAD AND COPPER RULE REVISIONS

4H

Jul 1Active

LEAD AND COPPER RULE REVISIONS

4H

Jul 1Active

Nitrate-Nitrite

02

Jun 30Resolved

Lead and Copper Rule

57

Jun 30Active

Lead and Copper Rule

57

Jun 30Active

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

1A

May 31Resolved

Revised Total Coliform Rule

1A

May 31Resolved

Revised Total Coliform Rule

1A

May 31Resolved

Revised Total Coliform Rule

1A

May 31Resolved

Revised Total Coliform Rule

3A

May 31Resolved

Revised Total Coliform Rule

3A

May 31Resolved

Nitrate-Nitrite

02

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

2024(64)

Nitrate-Nitrite

02

Dec 31Resolved

Lead and Copper Rule

52

Dec 31Active

Lead and Copper Rule

52

Dec 31Active

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Lead and Copper Rule

66

Dec 29Resolved

Lead and Copper Rule

66

Dec 29Resolved

Lead and Copper Rule

66

Dec 29Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

Nitrate-Nitrite

02

Sep 30Resolved

Nitrate-Nitrite

02

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Active

Lead and Copper Rule

52

Sep 30Active

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Lead and Copper Rule

52

Sep 30Active

Lead and Copper Rule

52

Sep 30Active

Lead and Copper Rule

52

Sep 30Active

Lead and Copper Rule

52

Sep 30Active

Lead and Copper Rule

66

Sep 28Active

Lead and Copper Rule

66

Sep 28Active

E. COLI

34

Sep 15Resolved

E. COLI

34

Sep 15Resolved

E. COLI

34

Sep 15Resolved

Public Notice

75

Aug 22Active

Public Notice

75

Aug 22Active

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Nitrate-Nitrite

04

Jun 30Resolved

Nitrate-Nitrite

02

Jun 30Resolved

Nitrate-Nitrite

02

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Revised Total Coliform Rule

2D

Jun 15Resolved

Revised Total Coliform Rule

2D

Jun 15Resolved

Revised Total Coliform Rule

2D

Jun 15Resolved

Revised Total Coliform Rule

2D

May 31Resolved

Nitrate-Nitrite

02

Mar 31Resolved

Nitrate-Nitrite

02

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Revised Total Coliform Rule

3A

Mar 31Resolved

Groundwater Rule

45

Jan 3Resolved

Groundwater Rule

45

Jan 3Resolved

Groundwater Rule

45

Jan 3Resolved

Groundwater Rule

45

Jan 3Resolved

Groundwater Rule

45

Jan 3Resolved

Groundwater Rule

45

Jan 3Resolved

How Does This Compare?

IDAHO FALLS (83401) has 556 recorded violations, including 71 health-based. 33 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

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

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

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