Pennsylvania · population 3,000
Lead pipes in Mountville, PA
9 lead or galvanized lines to replace
Most of Mountville (population 3,000) gets its water from Columbia Water Co. That system reported 7 lead and 2 galvanized-requiring-replacement service lines out of 10,648, with 1,317 more of unknown material.
<0.1% of Columbia Water Co'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 <0.1%
- Galvanized (replace) <0.1%
- Unknown 12%
- Non-lead 88%
Latest lead test for Columbia Water Co (Jun 2025–Sep 2025): 1 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 Columbia Water Co.
Water systems serving Mountville
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Columbia Water CoMain system | 7 | 2 | 1,317 | <0.1% |
| City of LancasterServes nearby areas | 474 | 0 | 42,841 | 1.0% |
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 Mountville
The counts above cover the whole water system. To see whether your line is lead, look up your address on Columbia Water Co'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
- Columbia9 lead + galv. lines
- Millersville474 lead + galv. lines
- Wrightsville4 lead + galv. lines
- Mount Joy8 lead + galv. lines
- East Petersburg1,446 unknown
- Marietta9 lead + galv. lines
- Lancaster474 lead + galv. lines
- Manheim37 lead + galv. lines
Check another water system
Questions
Does Mountville, PA have lead pipes?
Yes. Columbia Water Co, which serves Mountville, reported 7 lead and 2 galvanized-requiring-replacement service lines, plus 1,317 of unknown material.
Who supplies water to Mountville?
EPA's service area maps place most of Mountville in Columbia Water Co's service area (PWSID PA7360123). City of Lancaster also serves parts of the city or nearby areas.
How do I check whether my Mountville home has a lead service line?
Search your address on Columbia Water Co'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 Mountville 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 Columbia Water Co whether your street is scheduled and whether it covers the private side.