Water quality in Rancho Santa Fe, California
Rancho Santa Fe is in San Diego County. 198 active public water systems serve the county; 83 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 Diego County
81 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Olivenhain Mwd |
86,458 | 0 | 1.6 mi | |
| San Dieguito WD |
40,405 | 1 | 5.2 mi | |
| Del Dios Mutual Water Company |
330 | 3 | 5.6 mi | |
| Del Mar, City of Del Mar |
3,950 | 0 | 5.7 mi | |
| Rincon del Diablo Mwd (id-1) |
28,427 | 0 | 7.7 mi | |
| Vallecitos WD |
114,700 | 1 | 9.2 mi | |
| Carlsbad Mwd |
96,371 | 0 | 9.2 mi | |
| Rincon del Diablo Mwd (id-A) |
5,016 | 0 | 9.6 mi | |
| Poway, City of Poway |
49,888 | 0 | 10.0 mi | |
| Escondido, City of Escondido |
137,044 | 0 | 10.9 mi | |
| Vista Irrigation District |
134,501 | 0 | 11.6 mi | |
| San Diego, City of San Diego |
1,408,937 | 0 | 13.8 mi | |
| San Pasqual Academy |
298 | 0 | 15.0 mi | |
| Oceanside, City of Oceanside |
174,340 | 0 | 15.1 mi | |
| Oakvale Park |
260 | 3 | 15.3 mi | |
| Lake Wohlford Resort |
250 | 0 | 15.6 mi | |
| San Diego County Water Authority |
0 | 0 | 16.9 mi | |
| Valley Center Mwd |
30,166 | 0 | 17.3 mi | |
| Ramona Municipal WD |
36,455 | 0 | 17.8 mi | |
| Lakeside WD |
35,500 | 1 | 18.9 mi | |
| Helix Water District |
277,918 | 0 | 21.3 mi | |
| Rainbow Municipal WD |
23,536 | 0 | 21.9 mi | |
| Camp Pendleton (south) |
44,555 | 0 | 22.2 mi | |
| Nas North Island & Nab Coronado |
421 | 0 | 22.5 mi | |
| Lazy H Mutual Water Company |
117 | 0 | 22.6 mi |
Non-community systems in San Diego County (116: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to San Diego County, nearest to Rancho Santa Fe 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 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.