Water Quality in TUCSON, AZ (85745)

EPA violation data for public water systems serving ZIP code 85745.

78

Total Violations

20

Health-Based

58

Monitoring / Reporting

77

Resolved

What does this mean?

77 of 78 violations have been resolved. 20 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 58 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: 6 Population served: 1,466

Violations Detail (78 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
ArsenicMonitoringN/AN/AJun 30, 2025ResolvedSkin damage; circulatory system problems; increased risk of cancer
ArsenicMonitoringN/AN/AJun 30, 2025ResolvedSkin damage; circulatory system problems; increased risk of cancer
ArsenicMonitoringN/AN/AJun 30, 2025ResolvedSkin damage; circulatory system problems; increased risk of cancer
Lead and Copper RuleMonitoringN/AN/ADec 31, 2024ActiveN/A
Public NoticeMonitoringN/AN/AJan 17, 2024ResolvedN/A
Public NoticeMonitoringN/AN/AJan 17, 2024ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/AJul 31, 2023ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/AJul 31, 2023ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/AJul 31, 2023ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/AJul 31, 2023ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(3)

Arsenic

03

Jun 30Resolved

Arsenic

03

Jun 30Resolved

Arsenic

03

Jun 30Resolved

2024(3)

Lead and Copper Rule

66

Dec 31Active

Public Notice

75

Jan 17Resolved

Public Notice

75

Jan 17Resolved

How Does This Compare?

TUCSON (85745) has 78 recorded violations, including 20 health-based. 1 remains 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.

Nearby ZIP Codes

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