Hamilton Water Quality
Ohio
According to EPA SDWIS, Hamilton, Ohio is served by 4 community water systems covering about 204,582 people. PlainEnviro's health-based extract shows zero health-based violation records for those systems. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Hamilton, Ohio is delivered through 4 EPA-regulated community water systems serving an estimated 204,582 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 0 violation records across the 4 active community systems shown here. Monitoring and reporting records are not present in the extract. No contaminant code appears in the health-based records. 11 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Ohio drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| BUTLER CO. WATER DISTRICT 2 PWS | 116,572 | 0 | Clean |
| FAIRFIELD CITY PWS | 44,907 | 0 | Clean |
| SOUTHWEST REGIONAL WATER DISTRICT | 42,856 | 0 | Clean |
| CROUSE MOBILE HOME PARK & SALES, LLC | 247 | 0 | Clean |
TRI Facilities in Hamilton
| Facility | Total Releases |
|---|---|
| Univar Solutions USA Inc. - Hamilton | 102.3K lbs |
| Plas-Tanks Industries Inc. | 63.9K lbs |
| Ge Engine Services Acsc/c Symmes Road | 520 lbs |
| Terry Asphalt Materials Inc | 445 lbs |
| Hamilton Brass & Aluminum Castings Co | 174 lbs |
| Future Finishes Inc | 8 lbs |
| Connector Manufacturing Co | 0 lbs |
| Dubois Chemicals Inc. - Hamilton Oh (eagle) | 0 lbs |
| Ufp Hamilton LLC | 0 lbs |
| Cmc Rebar-Oh-Cincinnati | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Hamilton, Ohio? ▼
How many water violations does Hamilton have in this EPA extract? ▼
How many water systems serve Hamilton? ▼
Where does Hamilton get its drinking water? ▼
Are there pollution sources near Hamilton? ▼
How does Hamilton compare in Ohio?
Of the 581 Ohio places with at least one community water system on file, Hamilton ranks #40 by number of systems (4).
Either side of it: Cadia (4), Chagrin Falls (4), Lagrange (4), Lorain (4)
About This Data
Figures here are the current EPA SDWIS extract joined to the 4 community water systems whose service area lists Hamilton, ranked against the 581 Ohio places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.