Lehigh County, PA · PWSID PA3390024
Lca Allentown Division lead service lines
10,391 lead or galvanized lines to replace
Lca Allentown Division reported 4,552 lead and 5,839 galvanized-requiring-replacement service lines out of 31,999 in its inventory. That's 32% of all its lines. Another 20,894 (65%) are still listed as unknown material.
Ranks #3 of 399 Pennsylvania systems with confirmed lead lines, and #45 nationally.
32% of Lca Allentown Division's service lines are lead or galvanized requiring replacement. That's higher than the Pennsylvania average (2.9%) and higher than the national average (3.1%).
- Lead 14%
- Galvanized (replace) 18%
- Unknown 65%
- Non-lead 2.2%
Total service lines reported: 31,999. Reported all required service line types. Population served: 118,000; 33,498 connections.
Lead test results
Lca Allentown Division's most recent 90th-percentile lead result (Jun 2025–Sep 2025) was 7 ppb, 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 10,823 in 2025 Q1 to 10,391 in 2026 Q3: down 432 (4.0%). Lines of unknown material went from 22,409 to 20,894, down 1,515 (6.8%).
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 Lca Allentown Division 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
Lca Allentown Division's main water source is surface water (rivers, lakes or reservoirs). It sells water to 5 other water systems: Salisbury TWP Water System, SWT Main System, Lca Wlsa Central Division, SWT Allentown Cons System, Hanover Township Lehigh County.
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 Lca Allentown Division 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 Lehigh County
Cities served
ZIP codes served
ZIP codes whose center falls inside Lca Allentown Division's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
181011810218103
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Lca Wlsa Central Division | 0 | 6,977 |
| SWT Main System | 1 | 3,131 |
| Emmaus Borough Public Water | 550 | 1,673 |
| Catasauqua Mun Water Works | 29 | 2,215 |
| Slatington Borough Water Sys | 88 | 626 |
| Macungie Borough Authority | 9 | 230 |
| Coopersburg Mun Water Auth | 12 | 766 |
| Lca Washington Township Div | 2 | 303 |
Check another water system
Questions
Does Lca Allentown Division have lead pipes?
Yes. Lca Allentown Division reported 4,552 lead service lines and 5,839 galvanized lines that must be replaced, out of 31,999 total. 20,894 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on Lca Allentown Division'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 Lca Allentown Division 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 Lca Allentown Division had lead violations?
EPA's data shows no Lead and Copper Rule violations since 2015 for Lca Allentown Division.
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, "Lca Allentown Division lead service lines," https://leadpipemap.com/pa/lca-allentown-division/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.