Water quality in California, Maryland
California is in St. Mary's County. 202 active public water systems serve the county; 46 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in St. Mary's County
37 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Lord Calvert Trailer Park |
892 | 1 | 3.5 mi | |
| Patuxent Naval Air Station (navfac-Wash) |
22,000 | 1 | 4.0 mi | |
| Hunting Quarters |
715 | 1 | 4.1 mi | |
| Greenbrier |
1,161 | 1 | 4.8 mi | |
| Langley Mobile Home Park |
175 | 2 | 4.8 mi | |
| Forrest Farm Subdivision |
577 | 1 | 5.0 mi | |
| Cedar Cove |
2,728 | 1 | 5.1 mi | |
| Southgate |
188 | 1 | 5.1 mi | |
| Christmas Tree Farm Trailer Park |
100 | 3 | 5.4 mi | |
| Fenwick Manor |
234 | 1 | 5.5 mi | |
| Fox Meadow |
128 | 1 | 5.5 mi | |
| Cook's Trailer Court (aka Garrett Tp) |
120 | 1 | 5.9 mi | |
| Leonardtown Farm |
193 | 1 | 6.0 mi | |
| Lexington Estates |
300 | 0 | 6.4 mi | |
| Wilderness Run |
511 | 2 | 7.3 mi | |
| Holland Forest |
139 | 1 | 7.4 mi | |
| Town of Leonardtown |
5,000 | 1 | 7.9 mi | |
| Saint Marys College |
2,200 | 1 | 8.2 mi | |
| Mulberry South |
65 | 1 | 8.5 mi | |
| Breton Bay |
1,012 | 2 | 9.6 mi | |
| Villages at Leonardtown |
239 | 1 | 9.9 mi | |
| Piney Point Landings |
239 | 1 | 10.0 mi | |
| Piney Point |
672 | 1 | 10.7 mi | |
| King & Kennedy |
169 | 1 | 11.1 mi | |
| St. Clements Shores |
620 | 1 | 11.6 mi |
Non-community systems in St. Mary's County (164: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to St. Mary's County, nearest to California 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 Maryland 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.