Water Quality in BENSON, AZ (85602)

EPA violation data for public water systems serving ZIP code 85602.

104

Total Violations

Health-Based

Monitoring / Reporting

Resolved

What does this mean?

90 of 104 violations have been resolved. 29 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 75 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: 10 Population served: 6,366

Violations Detail (104 total)

Contaminant	Category	MCL Limit	Measured	Date	Status	Health Effects
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2025	Active	N/A
Public Notice	Monitoring	N/A	N/A	Dec 19, 2024	Active	N/A
Public Notice	Monitoring	N/A	N/A	Dec 19, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 19, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 19, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 19, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Resolved	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Monitoring	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	N/A
LEAD AND COPPER RULE REVISIONS	Health-Based	N/A	N/A	Oct 16, 2024	Active	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	Sep 7, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Sep 7, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Sep 7, 2024	Resolved	N/A
Groundwater Rule	Health-Based	N/A	N/A	Sep 7, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Jul 31, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jul 20, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jul 20, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jul 20, 2024	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Jul 20, 2024	Resolved	N/A
E. COLI	Monitoring	0	N/A	Jul 4, 2024	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 4, 2024	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 4, 2024	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 4, 2024	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Public Notice	Monitoring	N/A	N/A	May 17, 2024	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	May 17, 2024	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Lead and Copper Rule	Monitoring	N/A	N/A	Dec 31, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2023	Resolved	N/A
E. COLI	Monitoring	0	N/A	Apr 11, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Apr 11, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Apr 11, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Apr 11, 2023	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Revised Total Coliform Rule	Monitoring	N/A	N/A	Mar 31, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 17, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Feb 17, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 28, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 28, 2023	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Jan 28, 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
Public Notice	Monitoring	N/A	N/A	Dec 18, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 18, 2022	Resolved	N/A
Public Notice	Monitoring	N/A	N/A	Dec 18, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Nov 13, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Nov 13, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Nov 13, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Nov 13, 2022	Resolved	N/A
E. COLI	Monitoring	0	N/A	Oct 27, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 27, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 27, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 27, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 11, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 11, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 11, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Oct 11, 2022	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 2, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 2, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 2, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Oct 2, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 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	Health-Based	N/A	N/A	Sep 2, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 2, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 2, 2022	Resolved	N/A
Revised Total Coliform Rule	Health-Based	N/A	N/A	Sep 2, 2022	Resolved	N/A
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	N/A
Chlorine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Eye and nose irritation; stomach discomfort
Chlorine	Monitoring	N/A	N/A	Jun 30, 2022	Resolved	Eye and nose irritation; stomach discomfort
Consumer Confidence Rule	Monitoring	N/A	N/A	Jun 30, 2022	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
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
Consumer Confidence Rule	Monitoring	N/A	N/A	Oct 1, 2021	Resolved	N/A
E. COLI	Monitoring	0	N/A	Jul 15, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
E. COLI	Monitoring	0	N/A	Jul 15, 2021	Resolved	Severe gastrointestinal illness; may be fatal in vulnerable populations
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
Revised Total Coliform Rule	Monitoring	N/A	N/A	Feb 28, 2021	Resolved	N/A

Lead & Copper Levels

Violation Timeline

2025(1)

Consumer Confidence Rule

Jun 30Active

2024(41)

Public Notice

Dec 19Active

Public Notice

Dec 19Resolved

Public Notice

Dec 19Resolved

Public Notice

Dec 19Resolved

Public Notice

Dec 19Resolved