Water quality for ZIP code 77378
ZIP 77378 covers Willis and Conroe in Montgomery County, Texas, one of 22 ZIP codes in the county. 472 active public water systems serve the county; 228 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Montgomery County
337 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Timber Line Estates |
579 | 0 | 3.7 mi | |
| Domestic Water Royal Forest Subdivision |
1,667 | 1 | 4.3 mi | |
| Sjra the Woodlands |
0 | 0 | 4.9 mi | |
| Bee Creek Estates |
228 | 0 | 5.3 mi | |
| Caddo Village |
1,395 | 1 | 5.7 mi | |
| Texas National MUD |
931 | 2 | 5.7 mi | |
| Creekside Acres Water System |
567 | 0 | 5.7 mi | |
| Settlers Crossing |
240 | 0 | 6.1 mi | |
| Arrowhead Lake & Frontier Lake |
2,208 | 1 | 6.3 mi | |
| Rogers Road Water System |
567 | 0 | 6.5 mi | |
| Serenity Woods Subdivision |
468 | 2 | 6.6 mi | |
| Texaba Subdivision |
590 | 0 | 7.1 mi | |
| Deer Run |
372 | 1 | 7.1 mi | |
| Emerald Lakes Subdivision |
1,053 | 0 | 7.3 mi | |
| Oak Woods Water System |
162 | 1 | 7.3 mi | |
| Lake Louise Subdivision |
309 | 4 | 7.4 mi | |
| Deer Trail Water District |
693 | 1 | 7.5 mi | |
| Deer Pines Subdivision |
558 | 1 | 7.6 mi | |
| City of Willis |
14,133 | 9 | 7.8 mi | |
| Town of Cut and Shoot |
6,000 | 0 | 8.2 mi | |
| Crystal Springs Subdivision |
255 | 2 | 8.2 mi | |
| New Danville Community |
159 | 3 | 9.2 mi | |
| Hulon Lakes Subdivision |
771 | 2 | 9.3 mi | |
| Hillgreen Subdivision Water CO |
138 | 0 | 9.5 mi | |
| Stone Hedge Estates |
129 | 3 | 9.5 mi |
Non-community systems in Montgomery County (134: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Montgomery 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.