Water quality for ZIP code 90743
ZIP 90743 covers Seal Beach in Orange County, California, one of 88 ZIP codes in the 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 |
|---|---|---|---|---|
| City of Huntington Beach Huntington Beach |
201,000 | 0 | 5.3 mi | |
| City of Westminster Westminster |
93,591 | 0 | 5.5 mi | |
| Liberty Park Water Association |
95 | 3 | 5.6 mi | |
| South Midway City Mutual Water Co. Midway City |
891 | 0 | 5.7 mi | |
| Midway City Mutual WC Midway City |
1,305 | 0 | 5.8 mi | |
| Golden State WC West Orange County |
114,693 | 0 | 5.9 mi | |
| Eastside Water Association |
2,000 | 1 | 6.0 mi | |
| Hynes Estates Mutual Water Co. |
168 | 1 | 7.0 mi | |
| City of Fountain Valley Fountain Valley |
56,747 | 0 | 7.8 mi | |
| City of Garden Grove Garden Grove |
174,226 | 0 | 7.9 mi | |
| City of la Palma La Palma |
15,948 | 0 | 8.5 mi | |
| City of Buena Park Buena Park |
82,667 | 0 | 10.0 mi | |
| Mesa Water District |
110,000 | 0 | 10.8 mi | |
| Page Avenue Mutual Water Company |
119 | 2 | 11.2 mi | |
| City of Santa Ana Santa Ana |
316,184 | 0 | 11.7 mi | |
| City of Fullerton Fullerton |
140,054 | 0 | 14.0 mi | |
| City of Newport Beach Newport Beach |
69,520 | 0 | 14.7 mi | |
| City of Anaheim Anaheim |
350,254 | 1 | 15.0 mi | |
| City of Tustin Tustin |
65,143 | 0 | 15.6 mi | |
| City of Orange Orange |
120,770 | 0 | 15.6 mi | |
| City of la Habra La Habra |
61,202 | 0 | 15.7 mi | |
| Golden State WC Placentia/yorba Linda |
50,804 | 0 | 16.6 mi | |
| Serrano Water District |
5,659 | 0 | 17.0 mi | |
| East Orange County WD RZ |
3,464 | 0 | 17.0 mi | |
| Golden State WC Cowan Heights |
7,006 | 0 | 17.8 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 |
|---|---|---|---|---|
|
Los Alamitos Race Course |
1,600 | 1 | 1 | |
|
Knott's Berry Farm |
3,000 | 0 | 0 | |
|
Canyon RV Park |
24 | 0 | 0 | |
|
Smwd-Nichols Institute |
1,600 | 0 | 0 | |
|
Caspers Regional Wilderness Park |
239 | 0 | 0 | |
|
Lazy W Ranch Water System |
63 | 0 | 0 |
About this data
Water systems are matched to Orange 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.