Water quality in Tustin, California
Tustin is in Orange County. 46 active public water systems serve the county; 6 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 Orange County
39 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| East Orange County WD RZ |
3,464 | 0 | 2.4 mi | |
| Golden State WC Cowan Heights |
7,006 | 0 | 2.6 mi | |
| City of Santa Ana Santa Ana |
316,184 | 0 | 3.9 mi | |
| City of Orange Orange |
120,770 | 0 | 4.2 mi | |
| Serrano Water District |
5,659 | 0 | 4.9 mi | |
| Irvine Ranch Water District |
450,323 | 0 | 5.4 mi | |
| City of Anaheim Anaheim |
350,254 | 1 | 6.8 mi | |
| Mesa Water District |
110,000 | 0 | 7.9 mi | |
| City of Fountain Valley Fountain Valley |
56,747 | 0 | 8.2 mi | |
| City of Garden Grove Garden Grove |
174,226 | 0 | 8.6 mi | |
| Golden State WC Placentia/yorba Linda |
50,804 | 0 | 9.6 mi | |
| City of Newport Beach Newport Beach |
69,520 | 0 | 9.6 mi | |
| Eastside Water Association |
2,000 | 1 | 9.7 mi | |
| Midway City Mutual WC Midway City |
1,305 | 0 | 9.9 mi | |
| South Midway City Mutual Water Co. Midway City |
891 | 0 | 9.9 mi | |
| Yorba Linda Water District |
84,292 | 0 | 10.1 mi | |
| City of Westminster Westminster |
93,591 | 0 | 10.3 mi | |
| Liberty Park Water Association |
95 | 3 | 10.5 mi | |
| Hynes Estates Mutual Water Co. |
168 | 1 | 10.6 mi | |
| EL Toro Water District |
53,415 | 0 | 10.9 mi | |
| City of Huntington Beach Huntington Beach |
201,000 | 0 | 11.3 mi | |
| Page Avenue Mutual Water Company |
119 | 2 | 11.4 mi | |
| City of Fullerton Fullerton |
140,054 | 0 | 11.5 mi | |
| City of Brea Brea |
47,454 | 0 | 12.7 mi | |
| City of Buena Park Buena Park |
82,667 | 0 | 13.3 mi |
Non-community systems in Orange County (6: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Canyon RV Park |
24 | 0 | 0 | |
|
Knott's Berry Farm |
3,000 | 0 | 0 | |
|
Los Alamitos Race Course |
1,600 | 1 | 1 | |
|
Lazy W Ranch Water System |
63 | 0 | 0 | |
|
Smwd-Nichols Institute |
1,600 | 0 | 0 | |
|
Caspers Regional Wilderness Park |
239 | 0 | 0 |
About this data
Water systems are matched to Orange County, nearest to Tustin 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.