Water Quality in SHOW LOW, AZ (85901)

EPA violation data for public water systems serving ZIP code 85901.

140

Total Violations

Health-Based

112

Monitoring / Reporting

126

Resolved

What does this mean?

126 of 140 violations have been resolved. 28 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 112 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: 18,902

Violations Detail (140 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Public Notice	Monitoring	N/A	N/A	Sep 4, 2025	Resolved	N/A
E. COLI	Monitoring	0	N/A	Aug 3, 2025	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Aug 3, 2025	Active	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2025	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Active	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2025	Active	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 9, 2025	Active	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2025	Active	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 9, 2025	Active	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2025	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Dec 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Nov 30, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 27, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 27, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 6, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Oct 6, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2024	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2024	Active	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 9, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 9, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 9, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 9, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 9, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Aug 9, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 11, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 11, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 11, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	May 11, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2024	Active	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 9, 2024	Active	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 9, 2024	Active	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jan 31, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 4, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 4, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 4, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 4, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 4, 2023	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 4, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Active	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 9, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 9, 2023	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	May 9, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Aug 31, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2022	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Pentachlorophenol	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
OXAMYL	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Carbofuran	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 11, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 11, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 11, 2021	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Nov 11, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Oct 31, 2021	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2021	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Sep 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Aug 25, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Aug 25, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Aug 25, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 9, 2021	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jun 9, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 9, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jun 9, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	May 31, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	May 25, 2021	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	May 25, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Apr 30, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 26, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 26, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 26, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 26, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 24, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 24, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 24, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 24, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 18, 2021	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 18, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(24)

Public Notice

Sep 4Resolved

E. COLI

Aug 3Active

E. COLI

Aug 3Active

Revised Total Coliform Rule

Jul 31Resolved

Revised Total Coliform Rule

Jul 31Resolved

Consumer Confidence Rule

Jun 30Active

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 9Active

Revised Total Coliform Rule

May 9Active

Revised Total Coliform Rule

May 9Active

Revised Total Coliform Rule

May 9Active

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Mar 31Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

2024(28)

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Dec 31Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Nov 30Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Public Notice

Oct 27Resolved

Public Notice

Oct 27Resolved

Public Notice

Oct 6Resolved

Public Notice

Oct 6Resolved

Lead and Copper Rule

Sep 30Active

Lead and Copper Rule

Sep 30Active

Groundwater Rule

Aug 9Resolved

Groundwater Rule

Aug 9Resolved

Groundwater Rule

Aug 9Resolved

Groundwater Rule

Aug 9Resolved

Groundwater Rule

Aug 9Resolved

Groundwater Rule

Aug 9Resolved

Groundwater Rule

May 11Resolved

Groundwater Rule

May 11Resolved

Groundwater Rule

May 11Resolved

Groundwater Rule

May 11Resolved

Revised Total Coliform Rule

May 9Active

Revised Total Coliform Rule

May 9Active

Revised Total Coliform Rule

May 9Active

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

Revised Total Coliform Rule

Jan 31Resolved

2021(56)

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

Pentachlorophenol

Dec 31Resolved

OXAMYL

Dec 31Resolved

OXAMYL

Dec 31Resolved

Carbofuran

Dec 31Resolved

Carbofuran

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Lead and Copper Rule

Dec 31Resolved

Groundwater Rule

Nov 11Resolved

Groundwater Rule

Nov 11Resolved

Groundwater Rule

Nov 11Resolved

Groundwater Rule

Nov 11Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Revised Total Coliform Rule

Oct 31Resolved

Consumer Confidence Rule

Oct 1Resolved

Consumer Confidence Rule

Oct 1Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Sep 30Resolved

Lead and Copper Rule

Aug 25Resolved

Lead and Copper Rule

Aug 25Resolved

Lead and Copper Rule

Aug 25Resolved

Lead and Copper Rule

Jun 30Resolved

Lead and Copper Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 30Resolved

Revised Total Coliform Rule

Jun 9Resolved

Revised Total Coliform Rule

Jun 9Resolved

Revised Total Coliform Rule

Jun 9Resolved

Revised Total Coliform Rule

Jun 9Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Revised Total Coliform Rule

May 31Resolved

Lead and Copper Rule

May 25Resolved

Lead and Copper Rule

May 25Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Apr 30Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Revised Total Coliform Rule

Feb 28Resolved

Public Notice

Feb 26Resolved

Public Notice

Feb 26Resolved

Public Notice

Feb 26Resolved

Public Notice

Feb 26Resolved

Public Notice

Feb 24Resolved

Public Notice

Feb 24Resolved

Public Notice

Feb 24Resolved

Public Notice

Feb 24Resolved

Public Notice

Feb 18Resolved

Public Notice

Feb 18Resolved

How Does This Compare?

SHOW LOW (85901) has 140 recorded violations, including 28 health-based. 14 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.

Water Quality in SHOW LOW, AZ (85901)

What does this mean?

Violations Detail (140 total)

Lead & Copper Levels

Violation Timeline

2025(24)

2024(28)

2023(17)

2022(15)

2021(56)

How Does This Compare?

Recommended Water Filters

Reverse Osmosis System

UV Water Purifier

Nearby ZIP Codes

Check Another ZIP Code