Pennsylvania · population 22,517
Lead pipes in Carlisle, PA
251 lead or galvanized lines to replace
Most of Carlisle (population 22,517) gets its water from Carlisle Water TRMT PLT. That system reported 0 lead and 251 galvanized-requiring-replacement service lines out of 7,153, with 2,694 more of unknown material.
3.5% of Carlisle Water TRMT PLT's service lines are lead or galvanized requiring replacement, about the same as the Pennsylvania average (2.9%) and about the same as the national average (3.1%).
- Lead 0%
- Galvanized (replace) 3.5%
- Unknown 38%
- Non-lead 59%
Latest lead test for Carlisle Water TRMT PLT (Jun 2025–Sep 2025): 2.6 ppb 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 Carlisle Water TRMT PLT.
Water systems serving Carlisle
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Carlisle Water TRMT PLTMain system | 0 | 251 | 2,694 | 3.5% |
| N Middleton Water AuthServes nearby areas | 0 | 0 | 1,184 | 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 Carlisle
The counts above cover the whole water system. To see whether your line is lead, look up your address on Carlisle Water TRMT PLT'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
- Mount Holly Springsno lead reported
- Mechanicsburg846 lead + galv. lines
- Newville19 lead + galv. lines
- Dillsburg1 lead + galv. lines
- Shiremanstown1,751 lead + galv. lines
- Camp Hill1,751 lead + galv. lines
- Bloomfield1 lead + galv. lines
- Wormleysburg1,751 lead + galv. lines
Check another water system
Questions
Does Carlisle, PA have lead pipes?
Yes. Carlisle Water TRMT PLT, which serves Carlisle, reported 0 lead and 251 galvanized-requiring-replacement service lines, plus 2,694 of unknown material.
Who supplies water to Carlisle?
EPA's service area maps place most of Carlisle in Carlisle Water TRMT PLT's service area (PWSID PA7210002). N Middleton Water Auth also serves parts of the city or nearby areas.
How do I check whether my Carlisle home has a lead service line?
Search your address on Carlisle Water TRMT PLT'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 Carlisle 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 Carlisle Water TRMT PLT whether your street is scheduled and whether it covers the private side.