Water quality in San Bernardino, California
San Bernardino is in San Bernardino County. 321 active public water systems serve the county; 146 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 San Bernardino County
146 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Muscoy Mwc No. 1 |
13,000 | 1 | 2.8 mi | |
| Gilbert Street Complex |
124 | 2 | 2.9 mi | |
| Terrace Water Company |
2,400 | 0 | 5.3 mi | |
| Rialto, City of Rialto |
59,264 | 0 | 5.4 mi | |
| Camp Waterman Mwc |
55 | 1 | 5.4 mi | |
| East Valley Water District |
108,600 | 0 | 6.0 mi | |
| Colton, City of Colton |
46,525 | 0 | 6.3 mi | |
| Valley View Park Mwc |
499 | 1 | 6.4 mi | |
| Loma Linda University |
455 | 0 | 6.5 mi | |
| West Valley Water District |
96,123 | 0 | 6.7 mi | |
| Crestline Village Cwd Division 10 |
11,650 | 0 | 7.0 mi | |
| Loma Linda, City of Loma Linda |
25,208 | 0 | 7.1 mi | |
| Strawberry Lodge Mwc |
381 | 1 | 7.3 mi | |
| Lacsd Rimforest |
717 | 0 | 7.3 mi | |
| Valley of Enchantment Mwc |
2,471 | 1 | 7.4 mi | |
| Alpine Water Users Association |
2,534 | 0 | 7.9 mi | |
| Cedarpines Park Mwc |
2,458 | 0 | 8.1 mi | |
| Riverside Highland Water Company |
19,053 | 1 | 8.5 mi | |
| Marygold Mwc |
3,155 | 1 | 8.5 mi | |
| Dogwood Blue Jay Cyn Imp |
232 | 1 | 8.7 mi | |
| Clawa |
2,320 | 0 | 8.7 mi | |
| Upper Little Bear Mountain Club |
72 | 1 | 8.9 mi | |
| Cdf Pilot Rock Conservation Camp |
65 | 1 | 9.1 mi | |
| Devore WC |
1,574 | 0 | 9.2 mi | |
| Redlands City Mud-Water Div Redlands |
78,025 | 0 | 9.3 mi |
Non-community systems in San Bernardino County (174: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to San Bernardino County, nearest to San Bernardino 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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 California 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.