Water quality for ZIP code 17343
ZIP 17343 covers McKnightstown in Adams County, Pennsylvania, one of 14 ZIP codes in the county. 166 active public water systems serve the county; 74 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Adams County
34 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Western Cumberland Water Sys |
275 | 1 | 3.5 mi | |
| Arendtsville Muni Water Sys |
1,200 | 2 | 4.2 mi | |
| Eastern Cumberland Water Sys |
150 | 1 | 4.9 mi | |
| Anchor Estates |
300 | 1 | 5.0 mi | |
| Gettysburg Muni Auth |
12,425 | 1 | 5.8 mi | |
| Paramount Senior Living |
250 | 2 | 6.0 mi | |
| Biglerville Water CO |
2,501 | 1 | 6.2 mi | |
| Fairfield Muni Auth |
2,150 | 2 | 6.2 mi | |
| Castle Hill MHP |
120 | 0 | 7.8 mi | |
| Eisenhower Water Supply |
760 | 1 | 8.1 mi | |
| Amblebrook |
450 | 1 | 8.3 mi | |
| Round Top MHP |
185 | 0 | 8.3 mi | |
| Carroll Valley Water System |
267 | 0 | 8.6 mi | |
| PA Amer Water CO Lake Heritage |
1,648 | 0 | 8.9 mi | |
| Bendersville Muni Auth |
1,039 | 6 | 8.9 mi | |
| Oak Village |
225 | 0 | 9.0 mi | |
| Adams Cnty Fac Ctr |
456 | 0 | 9.5 mi | |
| Possum Valley Muni Auth |
800 | 3 | 9.6 mi | |
| Cavalry Heights MHP |
80 | 1 | 9.6 mi | |
| Hillside Rest Home INC |
58 | 3 | 10.7 mi | |
| Walnut Grove MHC |
425 | 1 | 10.9 mi | |
| Bonneauville Muni Water Auth |
2,730 | 4 | 11.2 mi | |
| Aqua PA Links at Gettysburg SY |
398 | 0 | 11.3 mi | |
| Hoffman Homes for Youths INC |
270 | 2 | 11.8 mi | |
| New Oxford Manor MHP |
350 | 5 | 13.0 mi |
Non-community systems in Adams County (131: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Adams County, the county this ZIP code lies in, nearest to the ZIP code's centre 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. Distances are measured to the centre of the service area EPA publishes for the system.
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.