Water quality in Waterloo, California
Waterloo is in San Joaquin County. 306 active public water systems serve the county; 69 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in San Joaquin County
92 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Shady Rest Trailer Court |
150 | 0 | 3.0 mi | |
| Stockton East Water District |
0 | 0 | 3.1 mi | |
| Glenwood Mobile Home Park |
100 | 2 | 3.2 mi | |
| Almond Park Water System |
60 | 0 | 3.2 mi | |
| Bel Air Mobile Estate |
325 | 0 | 3.3 mi | |
| Shaded Terrace PWS |
238 | 0 | 3.4 mi | |
| Morada Acres Water System |
105 | 0 | 3.5 mi | |
| Gayla Manor PWS |
178 | 0 | 3.6 mi | |
| Wilkinson Manor A-Zone PWS |
125 | 0 | 3.7 mi | |
| Morada Manor Water System |
112 | 0 | 3.7 mi | |
| Morada Estates N PWS #46 |
426 | 0 | 3.7 mi | |
| San Joaquin County Wilkinson Manor |
851 | 0 | 3.7 mi | |
| Morada Estates PWS |
290 | 0 | 3.9 mi | |
| Enclave at the Delta |
39 | 0 | 4.1 mi | |
| Tahama Village Mobile Home Park |
200 | 0 | 4.2 mi | |
| Walnut Acres |
106 | 0 | 4.2 mi | |
| Finnlees Trailer Park |
55 | 0 | 4.2 mi | |
| Stockton Verde Mobile Home Park |
703 | 0 | 4.2 mi | |
| Caribou Mobile Park PWS |
180 | 0 | 4.4 mi | |
| Country Squire Mobile Estates & Water SY |
131 | 1 | 4.5 mi | |
| Wayside Motel Apartments Wtr Sys |
70 | 0 | 4.6 mi | |
| Twin Oaks Mobile Park |
238 | 0 | 4.7 mi | |
| Mobile Villas Trailer Park |
130 | 0 | 4.7 mi | |
| Linden County Water District |
1,784 | 0 | 5.3 mi | |
| Fremont One |
39 | 1 | 5.4 mi |
Non-community systems in San Joaquin County (213: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to San Joaquin County, nearest to Waterloo 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. Retrieved from ECHO on Oct 11, 2026.