Water Quality in SIERRA VISTA, AZ (85635)

EPA violation data for public water systems serving ZIP code 85635.

120

Total Violations

16

Health-Based

104

Monitoring / Reporting

113

Resolved

What does this mean?

113 of 120 violations have been resolved. 16 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 104 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: 26 Population served: 47,819

Violations Detail (120 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2025ActiveN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2025ActiveN/A
Public NoticeMonitoringN/AN/ADec 19, 2024ResolvedN/A
Public NoticeMonitoringN/AN/ADec 19, 2024ResolvedN/A
Public NoticeMonitoringN/AN/ADec 19, 2024ResolvedN/A
Public NoticeMonitoringN/AN/ADec 19, 2024ResolvedN/A
Public NoticeMonitoringN/AN/ADec 19, 2024ActiveN/A
E. COLIMonitoring0N/ADec 4, 2024ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/ADec 4, 2024ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/ADec 4, 2024ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations

Lead & Copper Levels

Violation Timeline

2025(2)

Consumer Confidence Rule

71

Jun 30Active

Consumer Confidence Rule

71

Jun 30Active

2024(38)

Public Notice

75

Dec 19Resolved

Public Notice

75

Dec 19Resolved

Public Notice

75

Dec 19Resolved

Public Notice

75

Dec 19Resolved

Public Notice

75

Dec 19Active

E. COLI

34

Dec 4Resolved

E. COLI

34

Dec 4Resolved

E. COLI

34

Dec 4Resolved

Revised Total Coliform Rule

4B

Oct 31Resolved

Revised Total Coliform Rule

4B

Oct 31Resolved

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

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

4G

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

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Resolved

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

LEAD AND COPPER RULE REVISIONS

4G

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

LEAD AND COPPER RULE REVISIONS

2E

Oct 16Active

Revised Total Coliform Rule

2B

Sep 29Resolved

Revised Total Coliform Rule

2B

Sep 29Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

E. COLI

34

Jul 10Resolved

E. COLI

34

Jul 10Resolved

E. COLI

34

Jul 10Resolved

E. COLI

34

Jul 10Resolved

How Does This Compare?

SIERRA VISTA (85635) has 120 recorded violations, including 16 health-based. 7 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 →

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

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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