Water quality in McKnightstown, Pennsylvania
McKnightstown is in Adams 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 | 3.8 mi | |
| Eastern Cumberland Water Sys |
150 | 1 | 4.7 mi | |
| Anchor Estates |
300 | 1 | 4.7 mi | |
| Gettysburg Muni Auth |
12,425 | 1 | 5.8 mi | |
| Biglerville Water CO |
2,501 | 1 | 5.8 mi | |
| Paramount Senior Living |
250 | 2 | 6.2 mi | |
| Fairfield Muni Auth |
2,150 | 2 | 6.6 mi | |
| Castle Hill MHP |
120 | 0 | 7.5 mi | |
| Amblebrook |
450 | 1 | 8.0 mi | |
| Eisenhower Water Supply |
760 | 1 | 8.3 mi | |
| Round Top MHP |
185 | 0 | 8.4 mi | |
| Bendersville Muni Auth |
1,039 | 6 | 8.5 mi | |
| Oak Village |
225 | 0 | 8.7 mi | |
| PA Amer Water CO Lake Heritage |
1,648 | 0 | 8.8 mi | |
| Carroll Valley Water System |
267 | 0 | 8.9 mi | |
| Possum Valley Muni Auth |
800 | 3 | 9.2 mi | |
| Adams Cnty Fac Ctr |
456 | 0 | 9.3 mi | |
| Cavalry Heights MHP |
80 | 1 | 9.5 mi | |
| Walnut Grove MHC |
425 | 1 | 10.5 mi | |
| Hillside Rest Home INC |
58 | 3 | 11.1 mi | |
| Bonneauville Muni Water Auth |
2,730 | 4 | 11.1 mi | |
| Aqua PA Links at Gettysburg SY |
398 | 0 | 11.4 mi | |
| Hoffman Homes for Youths INC |
270 | 2 | 11.8 mi | |
| New Oxford Manor MHP |
350 | 5 | 12.8 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, nearest to McKnightstown 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.