County · Pennsylvania
Lehigh County, Pennsylvania: drinking water records
This overview covers 28 ZIP codes and 42 community water systems in Lehigh County. It also stands in for 2 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Lca Wlsa Central Division PA3390073 | 47,693 | 900 | 5 | 2 | 2 ppb |
| Emmaus Borough Public Water PA3390032 | 14,000 | 240 | 13 | 1 | 3 ppb |
| Slatington Borough Water Sys PA3390039 | 4,450 | 240 | 0 | 1 | 0 ppb |
| Lca Allentown Division PA3390024 | 118,000 | 240 | 4 | 0 | 7 ppb |
| Swt Main System PA3390065 | 14,500 | 660 | 3 | 0 | 6 ppb |
| Whitehall TWP Authority PA3390081 | 13,063 | 300 | 8 | 0 | 4 ppb |
| Salisbury TWP Water System PA3390062 | 8,522 | 120 | 5 | 0 | 3 ppb |
| Upper Saucon TWP Water Supply PA3390077 | 7,300 | 600 | 1 | 0 | 0 ppb |
| Catasauqua Mun Water Works PA3390044 | 6,598 | 60 | 2 | 0 | 5 ppb |
| Lca North Whitehall Division PA3390055 | 2,910 | 120 | 1 | 0 | 1 ppb |
| Glencrest Mobile Home Park PA3390020 | 570 | 0 | 0 | 1 | 1 ppb |
| Lca Heidelberg Heights Div PA3390047 | 509 | 0 | 0 | 1 | 2 ppb |
| Evergreen Wildwood Mobile Home Park IL0775410 | 230 | 0 | 0 | 3 | 0 ppb |
| Woodside Mobile Home Park PA3390091 | 130 | 0 | 0 | 1 | 5 ppb |
| Heidelberg Acres MHP PA3390011 | 90 | 0 | 0 | 2 | 5 ppb |
| Terryhill Estates MHP PA3390031 | 90 | 0 | 0 | 1 | 1.5 ppb |
| Valley View Estates PA3390005 | 68 | 0 | 0 | 1 | 7 ppb |
| Macungie Borough Authority PA3390033 | 3,039 | 0 | 0 | 0 | 5 ppb |
| Coopersburg Mun Water Auth PA3390046 | 2,570 | 0 | 0 | 0 | 5 ppb |
| Alburtis Borough Authority PA3390045 | 2,117 | 0 | 0 | 0 | 5 ppb |
| Desales University PA3390093 | 2,000 | 0 | 0 | 0 | 5 ppb |
| Swt Allentown Cons System PA3390087 | 1,300 | 0 | 0 | 0 | 4 ppb |
| Lca Washington Township Div PA3390078 | 965 | 0 | 0 | 0 | 10 ppb |
| Aqua Pa Springhouse Farms PA3390068 | 645 | 0 | 0 | 0 | 5 ppb |
| Lil Wolf MHP PA3390089 | 600 | 0 | 0 | 0 | 5 ppb |
ZIP reports in Lehigh County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 18066, 18069.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.