Water Quality in WILLCOX, AZ (85643)

EPA violation data for public water systems serving ZIP code 85643.

200

Total Violations

23

Health-Based

177

Monitoring / Reporting

191

Resolved

What does this mean?

191 of 200 violations have been resolved. 23 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 177 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: 16 Population served: 4,964

Violations Detail (200 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2025ActiveN/A
ChlorineMonitoringN/AN/AAug 31, 2025ResolvedEye and nose irritation; stomach discomfort
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2025ActiveN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
ChlorineMonitoringN/AN/AJul 31, 2025ResolvedEye and nose irritation; stomach discomfort
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2025ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(18)

Revised Total Coliform Rule

4B

Aug 31Active

Chlorine

27

Aug 31Resolved

Revised Total Coliform Rule

4B

Aug 31Active

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Chlorine

27

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Consumer Confidence Rule

71

Jun 30Active

Chlorine

27

Jun 30Resolved

Public Notice

75

Mar 24Active

Public Notice

75

Feb 5Resolved

Public Notice

75

Feb 5Resolved

Groundwater Rule

45

Jan 24Active

Groundwater Rule

45

Jan 24Active

Public Notice

75

Jan 1Active

2024(38)

Chlorine

27

Dec 31Resolved

Chlorine

27

Dec 31Resolved

Total Haloacetic Acids (HAA5)

27

Dec 31Active

TTHM

27

Dec 31Active

Public Notice

75

Dec 19Resolved

Public Notice

75

Dec 19Resolved

Groundwater Rule

45

Oct 26Resolved

Groundwater Rule

45

Oct 26Resolved

Groundwater Rule

45

Oct 26Resolved

Groundwater Rule

45

Oct 26Resolved

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

2E

Oct 16Resolved

Groundwater Rule

45

Oct 9Resolved

Groundwater Rule

45

Oct 9Resolved

Groundwater Rule

45

Oct 9Resolved

Groundwater Rule

45

Oct 9Resolved

Stage 2 Disinfectants and Disinfection Byproducts Rule

35

Sep 19Resolved

Stage 2 Disinfectants and Disinfection Byproducts Rule

35

Sep 19Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

Revised Total Coliform Rule

4B

Jul 31Resolved

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

3A

Apr 30Resolved

Chlorine

27

Mar 31Resolved

Chlorine

27

Mar 31Resolved

Revised Total Coliform Rule

4B

Mar 31Resolved

Revised Total Coliform Rule

4B

Mar 31Resolved

Public Notice

75

Feb 13Resolved

Public Notice

75

Feb 13Resolved

How Does This Compare?

WILLCOX (85643) has 200 recorded violations, including 23 health-based. 9 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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