Water quality for ZIP code 17504
Lancaster County, Pennsylvania, one of 53 ZIP codes in the county. 427 active public water systems serve the county; 220 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Lancaster County
97 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| Columbia Water CO |
25,200 | 1 | |
| Ephrata Area Joint Authority |
24,500 | 3 | |
| East Hempfield Water Auth |
20,988 | 2 | |
| Elizabethtown Area Water |
19,000 | 1 | |
| MT Joy Boro Auth |
15,261 | 1 | |
| Lititz Boro |
9,397 | 0 | |
| Warwick Twp Lititz Sys |
8,561 | 1 | |
| New Holland Borough |
8,490 | 2 | |
| Millersville Univ |
7,950 | 2 | |
| Upper Leacock Township |
7,734 | 0 | |
| East Cocalico Township Auth |
6,735 | 1 | |
| Manheim Area Water & Sewer Aut |
6,701 | 0 | |
| East Petersburg Borough |
6,215 | 1 | |
| West Earl Water Authority |
4,327 | 2 | |
| Akron Borough |
4,200 | 2 | |
| East Donegal |
4,048 | 3 | |
| Denver Boro |
3,861 | 3 | |
| Masonic Homes |
3,707 | 2 | |
| Quarryville Boro |
3,150 | 2 | |
| Strasburg Muni Water Auth |
3,100 | 1 | |
| Northwestern Lancaster CO Auth |
2,968 | 1 | |
| Warwick Twp Rothsville System |
2,846 | 2 | |
| West Cocalico Twp Water Auth |
2,430 | 1 | |
| Weaverland Valley Blue Ball |
1,946 | 2 | |
| Adamstown Borough |
1,800 | 1 |
Non-community systems in Lancaster County (329: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Lancaster County, the county this ZIP code lies in, largest first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Pennsylvania records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.