Ohio · population 1,093
Lead pipes in Thornville, OH
741 lines still unidentified
Most of Thornville (population 1,093) gets its water from Northern Perry Co.Water #1. It reported no confirmed lead service lines, but 741 of 741 lines are still listed as unknown material, so lead hasn't been ruled out.
0% of Northern Perry Co.Water #1's service lines are lead or galvanized requiring replacement, lower than the Ohio average (8.8%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 100%
- Non-lead 0%
Latest lead test for Northern Perry Co.Water #1 (Jan 2026–Jun 2026): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 4 Lead and Copper Rule violations since 2015, 2 health-based, 1 still open for Northern Perry Co.Water #1.
Water systems serving Thornville
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Northern Perry Co.Water #1Main system | 0 | 0 | 741 | 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 Thornville
The counts above cover the whole water system. To see whether your line is lead, look up your address on Northern Perry Co.Water #1'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
- Buckeye Lakeno lead reported
- Hebronno lead reported
- Heathno lead reported
- Baltimore86 lead + galv. lines
- Granville2,420 lead + galv. lines
- Newark2,420 lead + galv. lines
- Hanover7 lead + galv. lines
- New Lexington3 lead + galv. lines
Check another water system
Questions
Does Thornville, OH have lead pipes?
None are confirmed, but Northern Perry Co.Water #1 still lists 741 service lines as unknown material.
Who supplies water to Thornville?
EPA's service area maps place most of Thornville in Northern Perry Co.Water #1's service area (PWSID OH6400912).
How do I check whether my Thornville home has a lead service line?
Search your address on Northern Perry Co.Water #1'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 Thornville 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 Northern Perry Co.Water #1 whether your street is scheduled and whether it covers the private side.