Water quality for ZIP code 77504
ZIP 77504 covers Pasadena and Houston 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 |
|---|---|---|---|---|
| City of South Houston |
17,397 | 1 | 2.5 mi | |
| Harris County Wcid 161 |
3,129 | 2 | 4.6 mi | |
| Kirkmont MUD |
2,277 | 0 | 4.7 mi | |
| Clear Brook City MUD |
18,246 | 0 | 4.9 mi | |
| Sagemeadow Utility District |
6,975 | 2 | 4.9 mi | |
| City of Deer Park |
34,495 | 0 | 5.2 mi | |
| Harris County Wcid 156 |
1,116 | 0 | 5.4 mi | |
| Clear Lake City Water Authority |
89,702 | 0 | 5.9 mi | |
| Van Manor Mobile Home Park |
250 | 2 | 6.0 mi | |
| City of Galena Park |
10,487 | 5 | 7.0 mi | |
| Harris County MUD 55 Heritage Park |
16,392 | 0 | 7.8 mi | |
| Baybrook MUD 1 |
3,087 | 0 | 8.2 mi | |
| City of la Porte |
36,569 | 1 | 8.3 mi | |
| City of Jacinto City |
9,613 | 1 | 8.7 mi | |
| Harris County Wcid 36 |
11,073 | 0 | 9.1 mi | |
| City of Webster |
13,710 | 0 | 9.2 mi | |
| Harris County Fwsd 47 |
4,250 | 1 | 9.3 mi | |
| City of Nassau Bay |
5,347 | 1 | 9.4 mi | |
| City of Pasadena EL Cary Estates |
1,470 | 1 | 9.4 mi | |
| Harris County Fwsd 6 |
2,229 | 2 | 9.5 mi | |
| Harris County MUD 8 |
3,271 | 0 | 9.6 mi | |
| Harris County Wcid 50 EL Lago |
3,924 | 1 | 10.2 mi | |
| Harris County Wcid 21 |
13,845 | 3 | 10.3 mi | |
| Harris County Fwsd 51 |
19,671 | 1 | 10.3 mi | |
| City of Shoreacres |
1,493 | 1 | 10.4 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.