Lancaster
Is Lancaster tap water safe to drink?
Mostly yes — Lancaster scores 98/100. This report aggregates EPA drinking water data across 4 local systems in Lancaster. We found 73 total violations (14 unresolved).
Real-Time Environment
Live: 10:00 PM☀️ No active precipitation. Rainfall can impact surface water turbidity and pollutant runoff in Lancaster.
Water Quality Impact
🛡️ Home Water Treatment Needs
Should you invest in filtration or softening for your home in Lancaster?
Expert Advice
Your water quality is excellent. Standard filtration is optional but can further enhance taste.
Buying a Filter?
Wondering if Lancaster tap water needs filtering? We break it down.
Baby Formula Safety
Mixing baby formula with Lancaster tap water? Read this first.
Homebuyer's Perspective
If you're house-hunting in Lancaster, water quality belongs on your due-diligence checklist alongside schools and crime data. The high safety score (98/100) suggests lower risk for plumbing corrosion and appliance scaling.
Health & Family Safety
Residents should monitor Lead (90th percentile) levels. Pregnant women and families with young children should consult the specific EPA health goals listed below.
View Health Risk Glossary →Compliance Record for Lancaster
Based on EPA SDWIS violation records and contaminant test results for all water systems serving Lancaster.
Frequently Asked Questions
Is Lancaster tap water safe to drink?
Mostly yes — Lancaster scores 98/100.
How many water systems serve Lancaster?
Lancaster is served by 4 public water systems in our latest EPA-backed dataset.
How can I check water quality for my exact address in Lancaster?
Use the WaterQ search tool to look up your ZIP code and view nearby systems, contaminant levels, and recent violations for Lancaster.
What is the water quality score for Lancaster?
The water quality score for Lancaster is 98 out of 100, based on EPA contaminant data, violation history, and testing results across the 4 systems serving the city.
What are the top contaminants in Lancaster?
The top contaminants detected in Lancaster include Lead (90th percentile). View detailed information on our contaminants page.
Lancaster Water Quality Summary
Lancaster, OH receives a water quality score of 98/100 (Grade A) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 4 public water systems serving the area.
Lancaster's water quality is above the national average, with strong compliance records and low contaminant levels. Residents generally receive clean, safe tap water that meets EPA standards.
Lancaster's score of 98 is 14 points above the Ohio state average of 84, and above the nationwide average of roughly 78/100 across all U.S. states.
Serving this mid-size city in the Midwest's industrial Rust Belt near the Great Lakes coastline, Lancaster, Ohio's four water systems deliver highly reliable service to local households. For prospective homebuyers, the exceptionally high marks achieved by these systems provide strong assurance of clean drinking water in a region historically impacted by heavy industry. This excellent performance indicates that the municipal infrastructure is successfully managed, offering regulatory reliability to residents who depend on the tap daily.
Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Ohio water quality rankings report →
Key Contaminants
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Water Systems Serving Lancaster (4)
Little Walnut Water Treatment Facility
AOdrc-Southeastern Correctional Institute
ALancaster City Pws
AFairfield County Utilities Pws
ACheck Your Specific Address
Water quality can vary by neighborhood in Lancaster.
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Quick compare in Ohio
Compare Lancaster water quality: View all states · Contaminant library · How we score water quality