Pennsylvania · population 12,361
Lead pipes in St. Marys, PA
32 lead or galvanized lines to replace
Most of St. Marys (population 12,361) gets its water from St Marys Area Water Auth. That system reported 0 lead and 32 galvanized-requiring-replacement service lines out of 6,986, with 1,852 more of unknown material.
0.5% of St Marys Area Water Auth's service lines are lead or galvanized requiring replacement, lower than the Pennsylvania average (2.9%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0.5%
- Unknown 27%
- Non-lead 73%
Latest lead test for St Marys Area Water Auth (Jun 2025–Sep 2025): 3.3 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 St Marys Area Water Auth.
Water systems serving St. Marys
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| St Marys Area Water AuthMain system | 0 | 32 | 1,852 | 0.5% |
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 St. Marys
The counts above cover the whole water system. To see whether your line is lead, look up your address on St Marys Area Water Auth'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
- Johnsonburg1 lead + galv. lines
- Ridgway29 lead + galv. lines
- Brockwayno lead reported
- Kane29 lead + galv. lines
- DuBois54 lead + galv. lines
- Falls Creek27 lead + galv. lines
- Clearfield5,334 unknown
- Reynoldsville1 lead + galv. lines
Check another water system
Questions
Does St. Marys, PA have lead pipes?
Yes. St Marys Area Water Auth, which serves St. Marys, reported 0 lead and 32 galvanized-requiring-replacement service lines, plus 1,852 of unknown material.
Who supplies water to St. Marys?
EPA's service area maps place most of St. Marys in St Marys Area Water Auth's service area (PWSID PA6240016).
How do I check whether my St. Marys home has a lead service line?
Search your address on St Marys Area Water Auth'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 St. Marys 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 St Marys Area Water Auth whether your street is scheduled and whether it covers the private side.