Utility and state records
Current water bills, utility Consumer Confidence Reports, Ohio Drinking Water Watch and Ohio EPA sample records are the primary local sources.
Research methodology
Ohio Water Research Standards
The site separates confirmed public-system evidence from inference, address-level uncertainty and treatment marketing.
Source priority
Use the strongest available evidence first.
Federal data
EPA UCMR, ECHO and drinking-water guidance add system, monitoring and compliance context, with clear timing limitations.
Independent comparisons
EWG is used as an outbound comparison source, not as a substitute for official records or as a Zero Trace Water endorsement.
Verification rules
What must be confirmed before a local claim is published
Provider and system identity
- Street address and current bill
- Exact utility name
- Public-water-system ID
- County and service-area relationship
- Current Consumer Confidence Report
Sample and result context
- Analyte and reporting unit
- Sample date and reporting limit
- Raw, finished or distribution sample point
- One-time result versus trend
- Utility result versus household test
Evergreen review cadence
Routine policy review every 18–24 months
Methodology and editorial-policy pages are reviewed on an 18–24 month routine cycle. Material errors, major regulatory changes, changed provider relationships, broken source links or treatment-process changes may trigger an earlier update. City pages retain their own reviewed dates because public-system and utility information can change independently.
Research tools
Primary statewide and federal references
- ZIP data methodology
Ready APIs curated-us-zips, sourced from Census, USPS and SimpleMaps, used with attribution. - Ohio Drinking Water Watch
Search official public-water-system records by system number, name, county and source type. - Ohio EPA PFAS sampling service
Ohio treatment-plant sampling records distinguish systems, sample points, raw water and finished water. - Ohio EPA cyanotoxin monitoring service
Ohio monitoring for raw and finished water at participating public water systems. - EPA local drinking-water information
Federal guidance for identifying the supplier and annual Consumer Confidence Report. - EPA UCMR data finder
Unregulated-contaminant monitoring searchable by system, state, analyte and source-water type. - EWG Ohio utility directory
Independent comparison source; use alongside official utility and regulatory records.