Ohio · population 63,953
Lead pipes in Hamilton, OH
4,167 lead or galvanized lines to replace
Most of Hamilton (population 63,953) gets its water from Hamilton Public Water System. That system reported 4,156 lead and 11 galvanized-requiring-replacement service lines out of 23,072, with 7,230 more of unknown material.
18% of Hamilton Public Water System's service lines are lead or galvanized requiring replacement, higher than the Ohio average (8.8%) and higher than the national average (3.1%).
- Lead 18%
- Galvanized (replace) <0.1%
- Unknown 31%
- Non-lead 51%
Latest lead test for Hamilton Public Water System (Jan 2025–Dec 2027): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Hamilton Public Water System.
Water systems serving Hamilton
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Hamilton Public Water SystemMain system | 4,156 | 11 | 7,230 | 18% |
| Southwest Regional Water DistrictServes nearby areas | 0 | 0 | 10,529 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Hamilton
The counts above cover the whole water system. To see whether your line is lead, look up your address on Hamilton Public Water System's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- New Miamino lead reported
- Fairfieldno lead reported
- Forest Park34,717 lead + galv. lines
- Trenton3,640 unknown
- Springdale34,717 lead + galv. lines
- Greenhills34,717 lead + galv. lines
- Glendale4 lead + galv. lines
- Woodlawn34,717 lead + galv. lines
Check another water system
Questions
Does Hamilton, OH have lead pipes?
Yes. Hamilton Public Water System, which serves Hamilton, reported 4,156 lead and 11 galvanized-requiring-replacement service lines, plus 7,230 of unknown material.
Who supplies water to Hamilton?
EPA's service area maps place most of Hamilton in Hamilton Public Water System's service area (PWSID OH0904012). Southwest Regional Water District also serves parts of the city or nearby areas.
How do I check whether my Hamilton home has a lead service line?
Search your address on Hamilton Public Water System's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Hamilton be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Hamilton Public Water System whether your street is scheduled and whether it covers the private side.