Water Quality in MADISON, WI (53705)

EPA violation data for public water systems serving ZIP code 53705.

95

Total Violations

21

Health-Based

74

Monitoring / Reporting

93

Resolved

What does this mean?

93 of 95 violations have been resolved. 21 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 74 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: 91 Population served: 46,160

Violations Detail (95 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2025ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/ADec 31, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/ADec 31, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/ADec 31, 2024ResolvedN/A
Public NoticeMonitoringN/AN/AOct 16, 2024ActiveN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(2)

Revised Total Coliform Rule

3A

Aug 31Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

2024(8)

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Revised Total Coliform Rule

3A

Dec 31Resolved

Public Notice

76

Oct 16Active

Consumer Confidence Rule

71

Jun 30Resolved

Consumer Confidence Rule

71

Jun 30Resolved

Consumer Confidence Rule

72

Jun 30Resolved

Consumer Confidence Rule

72

Jun 30Resolved

How Does This Compare?

MADISON (53705) has 95 recorded violations, including 21 health-based. 2 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

One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.

Targets:Nitrate, Nitrite, Dissolved Solids

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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