Water Quality in DAYTON, MT (59914)

EPA violation data for public water systems serving ZIP code 59914.

157

Total Violations

3

Health-Based

154

Monitoring / Reporting

157

Resolved

What does this mean?

157 of 157 violations have been resolved. 3 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 154 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: 5 Population served: 199

Violations Detail (157 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
Revised Total Coliform RuleHealth-BasedN/AN/ADec 28, 2023ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/ADec 28, 2023ResolvedN/A
Revised Total Coliform RuleHealth-BasedN/AN/ADec 28, 2023ResolvedN/A
E. COLIMonitoring0N/ANov 15, 2023ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/ANov 15, 2023ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/ANov 15, 2023ResolvedSevere gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2023ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2023ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJul 31, 2023ResolvedN/A
Lead and Copper RuleMonitoringN/AN/ASep 28, 2022ResolvedN/A

Lead & Copper Levels

Violation Timeline

2023(9)

Revised Total Coliform Rule

2A

Dec 28Resolved

Revised Total Coliform Rule

2A

Dec 28Resolved

Revised Total Coliform Rule

2A

Dec 28Resolved

E. COLI

34

Nov 15Resolved

E. COLI

34

Nov 15Resolved

E. COLI

34

Nov 15Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

Revised Total Coliform Rule

3A

Jul 31Resolved

2022(2)

Lead and Copper Rule

66

Sep 28Resolved

Lead and Copper Rule

66

Sep 28Resolved

How Does This Compare?

DAYTON (59914) has 157 recorded violations, including 3 health-based. All violations have been resolved, which is a positive sign for current water quality. 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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