Water quality for ZIP code 77983
ZIP 77983 covers Seadrift in Calhoun County, Texas, one of 4 ZIP codes in the county. 21 active public water systems serve the county; 19 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Calhoun County
11 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| City of Seadrift |
1,577 | 5 | 8.5 mi | |
| Port Oconnor Improvement District |
1,139 | 4 | 9.2 mi | |
| Gbra Calhoun County Rural Water System |
4,482 | 4 | 11.6 mi | |
| City of Port Lavaca |
12,000 | 4 | 12.0 mi | |
| City of Point Comfort |
759 | 4 | 15.9 mi | |
| Sunilandings Utilities |
342 | 3 | 17.6 mi | |
| Port Alto HOA District 1 |
213 | 2 | 18.3 mi | |
| Port Alto WSC |
96 | 1 | 18.7 mi | |
| Guadalupe Blanco River Authority |
0 | 5 | 24.8 mi | |
| Shoalwater Flats Association |
171 | 2 | — | |
| EL Campo Beach Property Owner Assn |
150 | 5 | — |
Non-community systems in Calhoun County (9: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sweetwater RV Campgrounds |
67 | 1 | 1 | |
|
Seadrift Coke Plant |
110 | 3 | 0 | |
|
Formosa Point Comfort I |
2,400 | 1 | 0 | |
|
Formosa Point Comfort II |
250 | 1 | 1 | |
|
Machaceks Rockin M RV Park & Campground |
75 | 0 | 0 | |
|
Alcoa Point Comfort Operations |
50 | 1 | 1 | |
|
Ucc Seadrift Operations |
683 | 1 | 0 | |
|
Ineos Green Lake Plant |
250 | 2 | 0 | |
|
Port Alto Investments |
162 | 0 | 0 |
About this data
Water systems are matched to Calhoun 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 Texas 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.