Water Quality in FLAGSTAFF, AZ (86001)

EPA violation data for public water systems serving ZIP code 86001.

429

Total Violations

80

Health-Based

349

Monitoring / Reporting

384

Resolved

What does this mean?

384 of 429 violations have been resolved. 80 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 349 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: 53 Population served: 4,410

Violations Detail (429 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Public NoticeMonitoringN/AN/ASep 1, 2025ActiveN/A
Public NoticeMonitoringN/AN/AAug 13, 2025ActiveN/A
Public NoticeMonitoringN/AN/AJul 27, 2025ActiveN/A
Public NoticeMonitoringN/AN/AJul 25, 2025ActiveN/A
Revised Total Coliform RuleMonitoringN/AN/AJun 30, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJun 30, 2025ResolvedN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2025ActiveN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2025ActiveN/A
ArsenicMonitoringN/AN/AJun 30, 2025ResolvedSkin damage; circulatory system problems; increased risk of cancer
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2025ActiveN/A

Lead & Copper Levels

Violation Timeline

2025(31)

Public Notice

75

Sep 1Active

Public Notice

75

Aug 13Active

Public Notice

75

Jul 27Active

Public Notice

75

Jul 25Active

Revised Total Coliform Rule

4B

Jun 30Resolved

Revised Total Coliform Rule

4B

Jun 30Resolved

Consumer Confidence Rule

71

Jun 30Active

Consumer Confidence Rule

71

Jun 30Active

Arsenic

03

Jun 30Resolved

Consumer Confidence Rule

71

Jun 30Active

Public Notice

75

May 10Resolved

Public Notice

75

May 10Resolved

Public Notice

75

May 1Active

Revised Total Coliform Rule

3A

Apr 30Resolved

Revised Total Coliform Rule

3A

Apr 30Resolved

Revised Total Coliform Rule

3A

Apr 30Resolved

Revised Total Coliform Rule

4B

Apr 30Resolved

Revised Total Coliform Rule

4B

Apr 30Resolved

Revised Total Coliform Rule

4B

Apr 30Resolved

Revised Total Coliform Rule

4B

Apr 30Resolved

Revised Total Coliform Rule

4C

Apr 16Resolved

Revised Total Coliform Rule

4C

Apr 16Resolved

Revised Total Coliform Rule

2D

Apr 16Resolved

Revised Total Coliform Rule

2D

Apr 16Resolved

Revised Total Coliform Rule

2D

Apr 16Resolved

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Public Notice

75

Feb 13Active

Public Notice

75

Jan 29Active

Public Notice

75

Jan 19Active

Public Notice

75

Jan 1Active

2024(126)

TTHM

27

Dec 31Active

Total Haloacetic Acids (HAA5)

27

Dec 31Active

Lead and Copper Rule

51

Dec 31Active

Lead and Copper Rule

51

Dec 31Active

Public Notice

75

Dec 19Active

Public Notice

75

Dec 19Active

Public Notice

75

Dec 4Active

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

Revised Total Coliform Rule

3A

Nov 30Resolved

Chlorine

27

Nov 30Resolved

Chlorine

27

Nov 30Resolved

Groundwater Rule

45

Nov 30Active

Groundwater Rule

45

Nov 30Active

Public Notice

75

Nov 12Active

Chlorine

27

Oct 31Resolved

Chlorine

27

Oct 31Resolved

Revised Total Coliform Rule

2B

Oct 29Resolved

Revised Total Coliform Rule

2B

Oct 29Resolved

Revised Total Coliform Rule

2B

Oct 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

4G

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Resolved

Revised Total Coliform Rule

2A

Oct 10Active

Revised Total Coliform Rule

2A

Oct 10Active

Public Notice

75

Oct 3Resolved

Public Notice

75

Oct 3Resolved

Consumer Confidence Rule

72

Oct 1Resolved

Consumer Confidence Rule

72

Oct 1Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Revised Total Coliform Rule

3A

Sep 30Resolved

Chlorine

27

Sep 30Resolved

Chlorine

27

Sep 30Resolved

Chlorine

27

Sep 30Resolved

Revised Total Coliform Rule

2B

Sep 17Active

Revised Total Coliform Rule

2B

Sep 17Active

E. COLI

34

Sep 3Resolved

E. COLI

34

Sep 3Resolved

Revised Total Coliform Rule

4B

Aug 31Resolved

Revised Total Coliform Rule

4B

Aug 31Resolved

Chlorine

27

Aug 31Resolved

Chlorine

27

Aug 31Resolved

Chlorine

27

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

1A

Aug 31Resolved

Revised Total Coliform Rule

1A

Aug 31Resolved

Groundwater Rule

45

Aug 13Resolved

Groundwater Rule

45

Aug 13Resolved

Groundwater Rule

45

Aug 13Resolved

Groundwater Rule

45

Aug 13Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Revised Total Coliform Rule

1A

Jul 31Resolved

Revised Total Coliform Rule

1A

Jul 31Resolved

Revised Total Coliform Rule

1A

Jul 31Resolved

Revised Total Coliform Rule

1A

Jul 31Resolved

Revised Total Coliform Rule

5A

Jul 31Resolved

Revised Total Coliform Rule

5A

Jul 31Resolved

Public Notice

75

Jul 31Resolved

Public Notice

75

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Public Notice

75

Jul 1Resolved

Public Notice

75

Jul 1Resolved

Public Notice

75

Jul 1Resolved

Public Notice

75

Jul 1Resolved

Public Notice

75

Jul 1Active

Chlorine

27

Jun 30Resolved

Chlorine

27

Jun 30Resolved

Chlorine

27

Jun 30Resolved

Revised Total Coliform Rule

4B

Jun 30Resolved

Revised Total Coliform Rule

4B

Jun 30Resolved

Lead and Copper Rule

51

Jun 30Resolved

Lead and Copper Rule

51

Jun 30Resolved

Lead and Copper Rule

51

Jun 30Resolved

Revised Total Coliform Rule

4B

May 31Resolved

Revised Total Coliform Rule

4B

May 31Resolved

Revised Total Coliform Rule

4B

May 31Resolved

Revised Total Coliform Rule

4B

May 31Resolved

Revised Total Coliform Rule

4B

May 31Resolved

Revised Total Coliform Rule

4B

May 31Resolved

Revised Total Coliform Rule

4B

May 31Resolved

Revised Total Coliform Rule

4B

May 31Resolved

E. COLI

34

May 25Active

E. COLI

34

May 25Active

E. COLI

34

May 25Active

Public Notice

75

Apr 1Active

Public Notice

75

Apr 1Active

Lead and Copper Rule

66

Apr 1Resolved

Lead and Copper Rule

66

Apr 1Resolved

Lead and Copper Rule

66

Apr 1Active

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Revised Total Coliform Rule

4C

Mar 31Resolved

Revised Total Coliform Rule

4C

Mar 31Resolved

Revised Total Coliform Rule

4B

Feb 29Resolved

Revised Total Coliform Rule

4B

Feb 29Resolved

Chlorine

27

Feb 29Resolved

Chlorine

27

Feb 29Resolved

Revised Total Coliform Rule

4B

Feb 29Resolved

Revised Total Coliform Rule

4B

Feb 29Resolved

Chlorine

27

Jan 31Resolved

Chlorine

27

Jan 31Resolved

Public Notice

75

Jan 1Resolved

Public Notice

75

Jan 1Resolved

Public Notice

75

Jan 1Resolved

Public Notice

75

Jan 1Resolved

Public Notice

75

Jan 1Active

How Does This Compare?

FLAGSTAFF (86001) has 429 recorded violations, including 80 health-based. 45 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

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

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.

Nearby ZIP Codes

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