Water quality for ZIP code 77338
ZIP 77338 covers Houston, Humble, and Atascocita in Harris County, Texas, one of 132 ZIP codes in the county. 1,320 active public water systems serve the county; 679 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 |
|---|---|---|---|---|
| Amberwood Subdivision |
150 | 1 | 1.6 mi | |
| Oak Hill Estates |
402 | 4 | 1.8 mi | |
| City of Humble |
15,616 | 0 | 1.8 mi | |
| Hunters Glen MUD |
9,405 | 0 | 1.9 mi | |
| Cypresswood MHP |
96 | 2 | 2.4 mi | |
| Ramblewood Utility & WSC |
429 | 0 | 2.5 mi | |
| Tattor Road MUD |
5,400 | 0 | 3.6 mi | |
| Atascocita Village Mobile Home Park |
723 | 0 | 4.0 mi | |
| Classic Pines Subdivision |
960 | 0 | 4.0 mi | |
| Flagstone Water Plant |
876 | 0 | 4.1 mi | |
| Postwood MUD |
3,747 | 0 | 4.3 mi | |
| EL Dorado Utility District |
3,591 | 0 | 4.4 mi | |
| Northwood MUD 1 |
795 | 0 | 4.4 mi | |
| Harris County MUD 278 |
10,584 | 0 | 4.5 mi | |
| Kings Manor MUD |
4,377 | 0 | 4.7 mi | |
| North Belt Forest |
897 | 1 | 4.7 mi | |
| City of Houston Belleau Woods |
381 | 0 | 4.8 mi | |
| Atascocita Acres Subdivision |
381 | 0 | 4.8 mi | |
| Harris County Wcid 136 |
3,192 | 0 | 4.9 mi | |
| Harris County MUD 400 West |
5,217 | 0 | 5.3 mi | |
| Fountainview Subdivision |
2,703 | 4 | 5.3 mi | |
| Trail of the Lakes MUD |
9,480 | 2 | 5.3 mi | |
| Harris County MUD 43 |
6,873 | 0 | 5.4 mi | |
| Harris County Wcid 96 |
10,530 | 0 | 5.7 mi | |
| EL Dorado Mobile Home Community |
750 | 2 | 5.7 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.