Water quality for ZIP code 77091
ZIP 77091 covers Houston in Harris County, Texas, one of 132 ZIP codes in the county. 1,320 active public water systems serve the county; 683 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 Harris County
713 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Kingmont Mobile Home Park |
420 | 4 | 2.5 mi | |
| Sunbelt Fwsd Heather Glen Subdivision |
2,943 | 0 | 2.6 mi | |
| West Montgomery |
975 | 1 | 2.6 mi | |
| Country Living Apartments |
105 | 2 | 2.8 mi | |
| Cottonwood Park Water System |
168 | 0 | 2.9 mi | |
| Southern Water |
3,933 | 1 | 2.9 mi | |
| Nitsch & Son Utility |
2,190 | 3 | 3.0 mi | |
| Sunbelt Fwsd Northline Terrace |
3,225 | 1 | 3.2 mi | |
| Harris County MUD 118 |
6,678 | 1 | 3.3 mi | |
| Balaban Apartments 2 |
50 | 2 | 3.5 mi | |
| Cna Plaza Apartments |
80 | 4 | 3.5 mi | |
| Pin Oak Mobile Home Park |
345 | 0 | 3.5 mi | |
| Mount Houston Road MUD |
5,346 | 0 | 3.5 mi | |
| Mobile Home Estates |
549 | 1 | 3.6 mi | |
| North Point Villa |
144 | 3 | 3.6 mi | |
| Blue Bell Manor Subdivision |
2,607 | 2 | 3.6 mi | |
| Melrose MHP |
186 | 0 | 3.7 mi | |
| Harris County MUD 119 |
4,758 | 2 | 3.8 mi | |
| Carby Mobile Home Park |
210 | 0 | 3.8 mi | |
| Deer Trail Mobile Home Park |
126 | 2 | 3.8 mi | |
| Lone Willow MHP West |
75 | 3 | 3.9 mi | |
| Westfield Garden Mobile Home Park |
942 | 0 | 3.9 mi | |
| Mading Lane |
312 | 0 | 4.1 mi | |
| Aldine Oaks MHP |
150 | 1 | 4.1 mi | |
| Sunbelt Fwsd Oakglen Subdivision |
684 | 1 | 4.5 mi |
Non-community systems in Harris County (606: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Harris 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.