Montgomery County, PA · PWSID PA1460073
Aqua PA Main System lead service lines
4,650 lead or galvanized lines to replace
Aqua PA Main System reported 55 lead and 4,595 galvanized-requiring-replacement service lines out of 305,008 in its inventory. That's about 1 in 66 lines. Another 39,217 (13%) are still listed as unknown material.
Ranks #6 of 399 Pennsylvania systems with confirmed lead lines, and #105 nationally.
1.5% of Aqua PA Main System's service lines are lead or galvanized requiring replacement. That's lower than the Pennsylvania average (2.9%) and lower than the national average (3.1%).
- Lead <0.1%
- Galvanized (replace) 1.5%
- Unknown 13%
- Non-lead 86%
Total service lines reported: 305,008. Reported all required service line types. Population served: 822,600; 304,127 connections.
Lead test results
Aqua PA Main System's most recent 90th-percentile lead result (Jun 2025–Sep 2025) was not detected, below both the 15 ppb action level and the 10 ppb level that takes effect in 2027. This means 90% of homes sampled were at or below that level; individual homes, especially those with lead lines, can be higher.
Lead and Copper Rule 90th-percentile results reported to EPA, in parts per billion. Dashed lines: 15 ppb action level and the 10 ppb level from November 1, 2027.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 6,120 in 2025 Q1 to 4,650 in 2026 Q3: down 1,470 (24%). Lines of unknown material went from 59,126 to 39,217, down 19,909 (34%).
Quarterly counts reported to EPA. A drop usually means lines were replaced or confirmed non-lead; a rise usually means more lines were identified. Replacement progress rankings.
Lead rule violations
EPA's data lists no Lead and Copper Rule violations for Aqua PA Main System since 2015. That covers testing, reporting, corrosion control and public notice requirements; it isn't a guarantee about any individual home.
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Aqua PA Main System's main water source is surface water (rivers, lakes or reservoirs). It buys treated water from Chester Water Authority, Philadelphia Water Department, Phoenixville Water Dept, Bcwsa Main Lower South, Aqua PA Bensalem, Aqua PA West Chester. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Aqua PA Main System is responsible for its own service line inventory and replacement program. It sells water to 11 other water systems: Aqua PA Bensalem, Warwick TWP Water & Sewer Auth, Malvern Courts MHP, Aqua PA Uwchlan, Phoenixville Water Dept, Aqua PA West Chester, Ambler Boro Water Dept, Aqua PA Hatboro, Horsham Water&sewer Authority, PA American Norristown, Westtown School.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Aqua PA Main System whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Montgomery County
Cities served
- Lead pipes in Yeadon
- Lead pipes in Lansdowne
- Lead pipes in Darby
- Lead pipes in Conshohocken
- Lead pipes in Collingdale
- Lead pipes in Ridley Park
- Lead pipes in Glenolden
- Lead pipes in Clifton Heights
- Lead pipes in Folcroft
- Lead pipes in Swarthmore
- Lead pipes in Prospect Park
- Lead pipes in Sharon Hill
- Lead pipes in Norwood
- Lead pipes in Media
- Lead pipes in Jenkintown
- Lead pipes in Narberth
- Lead pipes in Aldan
- Lead pipes in Malvern
- Lead pipes in Morton
- Lead pipes in East Lansdowne
- Lead pipes in Rockledge
- Lead pipes in Colwyn
- Lead pipes in Eddystone
- Lead pipes in West Conshohocken
ZIP codes served
ZIP codes whose center falls inside Aqua PA Main System's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
19001190031900419008190101901219018190231902519026190271902919032190331903619038190411904319046190501905219063190641906619070190721907419075190761907819079190811908219083190851908619087190901909419095190961930119312193331935519406194281944419462
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| North Penn Water Authority | 60 | 0 |
| PA American Norristown | 417 | 30,340 |
| North Wales Water Authority | 5 | 17,382 |
| Horsham Water&sewer Authority | 4 | 6,567 |
| Ambler Boro Water Dept | 344 | 739 |
| Aqua PA Hatboro | 247 | 162 |
| Schwenksville Borough Auth | 80 | 106 |
| E Greenville Boro Water Dept | 4 | 723 |
Check another water system
Questions
Does Aqua PA Main System have lead pipes?
Yes. Aqua PA Main System reported 55 lead service lines and 4,595 galvanized lines that must be replaced, out of 305,008 total. 39,217 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on Aqua PA Main System's official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will Aqua PA Main System replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has Aqua PA Main System had lead violations?
EPA's data shows no Lead and Copper Rule violations since 2015 for Aqua PA Main System.
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "Aqua PA Main System lead service lines," https://leadpipemap.com/pa/aqua-pa-main-system/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.