A
98

Excellent Water Quality

Dayton, KY 41074

Campbell County · Population served: 199,460 · Data updated March 2026

Water Systems Serving This Area

🏔
NORTHERN KENTUCKY WATER DISTRICT
Surface water · Pop. 199,460
PWSID: KY0590220

PFAS / Forever Chemicals

1 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFPeA4.5 pptNo standardUnregulated

Water Quality Summary

Understanding Your Water in Dayton

Tap water quality in Dayton, Kentucky (41074) receives an overall grade of A (Excellent) with a score of 98 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 14 points above the Kentucky state average of 84. Compared to the national average (75), this area performs significantly better. The area is served by Northern Kentucky Water District, a surface water system providing water to approximately 199,460 people. PFAS testing detected 1 compound, all currently below EPA limits. The area has a clean violation record over the past 5 years — a positive indicator of consistent water quality management.

Your Score 98/100 A
vs State 14 pts above Kentucky avg (84)
vs National 23 pts above national avg (75)

What a Grade A Means

A score of 98/100 means the water supply in Dayton, KY meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.

Surface water: sourced from rivers, lakes, or reservoirs

Common Questions

Frequently Asked Questions

Based on EPA data, tap water in Dayton, Kentucky receives a grade of A (Excellent) with a score of 98/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.

ZIP code 41074 is served by 1 water system using surface water sources, providing water to approximately 199,460 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.

No lead data is currently available for ZIP code 41074. This may mean lead testing results haven't been reported recently, or the serving water system uses monitoring waivers. You can request a free lead test kit from most water utilities or purchase a certified home testing kit.

1 PFAS compound were detected in water serving Dayton, Kentucky, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.

Water systems serving Dayton, Kentucky have zero violations in the last 5 years. This is a positive indicator of consistent regulatory compliance and water quality management.

Based on detected contaminants (PFAS), residents in Dayton, Kentucky should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

Explore Nearby

Water Quality in Nearby ZIP Codes