Water quality for ZIP code 92069
ZIP 92069 covers San Marcos in San Diego County, California, one of 115 ZIP codes in the 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 |
|---|---|---|---|---|
| Vallecitos WD |
114,700 | 1 | 1.2 mi | |
| Rincon del Diablo Mwd (id-1) |
28,427 | 0 | 5.0 mi | |
| Escondido, City of Escondido |
137,044 | 0 | 6.5 mi | |
| Del Dios Mutual Water Company |
330 | 3 | 7.1 mi | |
| Valley Center Mwd |
30,166 | 0 | 7.9 mi | |
| Carlsbad Mwd |
96,371 | 0 | 8.2 mi | |
| Olivenhain Mwd |
86,458 | 0 | 8.7 mi | |
| Rincon del Diablo Mwd (id-A) |
5,016 | 0 | 9.3 mi | |
| Lake Wohlford Resort |
250 | 0 | 9.3 mi | |
| Oceanside, City of Oceanside |
174,340 | 0 | 9.4 mi | |
| Oakvale Park |
260 | 3 | 9.5 mi | |
| San Dieguito WD |
40,405 | 1 | 11.0 mi | |
| Santa FE I.d. |
21,539 | 0 | 11.5 mi | |
| Rainbow Municipal WD |
23,536 | 0 | 11.9 mi | |
| Rancho Pauma Mutual WC |
899 | 1 | 13.3 mi | |
| San Pasqual Academy |
298 | 0 | 13.5 mi | |
| Lazy H Mutual Water Company |
117 | 0 | 13.7 mi | |
| Yuima Municipal Water District Ida |
693 | 0 | 14.6 mi | |
| Yuima Municipal Water District |
360 | 0 | 14.6 mi | |
| Poway, City of Poway |
49,888 | 0 | 14.8 mi | |
| Rancho Estates Mutual Water Co. |
200 | 0 | 15.0 mi | |
| Pauma Valley Water Company |
185 | 5 | 15.2 mi | |
| Del Mar, City of Del Mar |
3,950 | 0 | 15.5 mi | |
| Camp Pendleton (south) |
44,555 | 0 | 15.6 mi | |
| Fallbrook Pud |
35,237 | 0 | 17.4 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, 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 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. Retrieved from ECHO on Oct 11, 2026.