Lead pipes in Westmoreland County, Pennsylvania
How many lead pipes are in Westmoreland County, PA?
Water systems based in Westmoreland County reported 2,496 lead service lines, 572 galvanized lines that need replacing and 22,394 lines of unknown material to EPA (Q3 2026). Westmoreland County (MAWC) has the most, with 2,680 lead and galvanized lines.
Free replacement program confirmed
Who pays in Pennsylvania
Pennsylvania's Act 120 lets PUC-regulated water utilities replace customer-owned lead service lines and recover the cost through rates, and it prohibits partial replacement. The PUC's 2022 rules require utilities to file replacement programs; Aqua Pennsylvania's was approved in April 2025 for up to 1,500 customer lines a year. City systems such as Philadelphia and Pittsburgh set their own terms.
Confirmed programs in Westmoreland County
- Westmoreland County (MAWC): Free in eight funded communities.
Every Westmoreland County water system with lead lines
Systems are grouped by the county EPA lists as their main service area. Some serve towns in neighboring counties too.
| Water system | Lead | Galv. | Unknown | Program |
|---|---|---|---|---|
| Westmoreland County (MAWC) Mawc Sweeney Plant | 2,408 | 272 | 1,911 | Free for eligible owners |
| Latrobe Muni Auth Latrobe Muni Auth | 45 | 273 | 1,358 | Not confirmed |
| Derry Boro Muni Auth Derry Boro Muni Auth | 34 | 18 | 1,988 | Not confirmed |
| Mawc Furnace Run Mawc Furnace Run | 9 | 9 | 1,362 | Not confirmed |
| Ligonier TWP Muni Auth Ligonier TWP Muni Auth | 0 | 0 | 1,697 | Not confirmed |
| New Kensington Muni Auth New Kensington Muni Auth | 0 | 0 | 14,078 | Not confirmed |
Common questions
How many lead pipes are in Westmoreland County, PA?
Water systems based in Westmoreland County reported 2,496 lead service lines, 572 galvanized lines that need replacing and 22,394 lines of unknown material to EPA (Q3 2026). Westmoreland County (MAWC) has the most, with 2,680 lead and galvanized lines.
Who pays to replace lead service lines in Westmoreland County?
It depends on your water utility. Pennsylvania's Act 120 lets PUC-regulated water utilities replace customer-owned lead service lines and recover the cost through rates, and it prohibits partial replacement. We have confirmed programs for 1 Westmoreland County utility, listed on this page.
How do I find out if my house has a lead service line?
Look up your address on your water utility's service line inventory map, or check the pipe where it enters your home: lead is dull gray, soft, scratches to shiny silver, and a magnet won't stick. See our step-by-step guide.
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