Water quality for ZIP code 77431
Brazoria County, Texas, one of 16 ZIP codes in the county. 327 active public water systems serve the county; 194 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Brazoria County
161 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| City of Lake Jackson |
27,314 | 2 | |
| City of Alvin |
26,244 | 1 | |
| City of Angleton |
19,429 | 4 | |
| City of Clute |
10,604 | 0 | |
| City of Freeport |
10,594 | 3 | |
| City of Iowa Colony |
9,978 | 0 | |
| City of Manvel |
8,437 | 1 | |
| City of Richwood |
7,605 | 3 | |
| Brazoria County MUD 6 |
6,926 | 0 | |
| City of Pearland MUD 1 |
5,947 | 0 | |
| Brazoria County MUD 29 |
5,898 | 0 | |
| Village of Surfside Beach |
5,697 | 3 | |
| Brazoria County MUD 22 |
5,310 | 1 | |
| Brazoria County MUD 25 |
5,250 | 3 | |
| Brazoria County MUD 55 |
5,229 | 1 | |
| Tdcj Ramsey Area |
5,119 | 4 | |
| Brazoria County MUD 21 |
4,833 | 0 | |
| Brazoria County MUD 3 |
4,230 | 0 | |
| City of Sweeny |
3,978 | 3 | |
| City of West Columbia |
3,650 | 0 | |
| Brazoria County MUD 2 |
3,567 | 1 | |
| Varner Creek Utility District |
3,111 | 1 | |
| Brazoria County MUD 39 |
3,036 | 0 | |
| City of Brazoria |
2,900 | 1 | |
| Brazoria County MUD 56 |
2,643 | 0 |
Non-community systems in Brazoria County (165: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Brazoria County, the county this ZIP code lies in, largest 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.
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.