Water quality in Sienna, Texas
Sienna is in Fort Bend County. 294 active public water systems serve the county; 119 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 Fort Bend County
179 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Sienna MUD 3 |
7,365 | 1 | 1.1 mi | |
| Sienna Regional MUD |
0 | 0 | 1.2 mi | |
| City of Missouri City |
4,847 | 1 | 1.4 mi | |
| Sienna MUD 6 |
5,184 | 1 | 1.5 mi | |
| Sienna Management District |
300 | 0 | 2.2 mi | |
| City of Arcola |
1,599 | 0 | 2.6 mi | |
| Fort Bend County MUD 131 |
3,114 | 0 | 2.8 mi | |
| Fort Bend County MUD 141 |
2,790 | 1 | 2.9 mi | |
| Fort Bend County MUD 189 |
624 | 0 | 3.1 mi | |
| Sienna MUD 12 |
4,311 | 0 | 3.1 mi | |
| Fort Bend County MUD 23 |
13,695 | 0 | 3.5 mi | |
| Sienna Plantation Management District |
4,179 | 0 | 3.7 mi | |
| City of Missouri City Mustang Bayou Wate |
9,147 | 0 | 3.8 mi | |
| Sienna MUD 10 |
7,824 | 1 | 4.2 mi | |
| Fort Bend County MUD 48 |
3,969 | 0 | 4.2 mi | |
| Fort Bend County MUD 47 |
2,874 | 0 | 4.2 mi | |
| Fort Bend County Fwsd 1 |
6,030 | 1 | 4.6 mi | |
| Niagra Public Water Supply |
165 | 1 | 4.8 mi | |
| Olympia Falls Water Plant |
594 | 0 | 4.8 mi | |
| Fort Bend County MUD 49 |
1,080 | 0 | 4.9 mi | |
| Fort Bend County MUD 149 |
4,638 | 0 | 4.9 mi | |
| Fort Bend County MUD 24 |
3,177 | 0 | 5.1 mi | |
| Palmer Plantation MUD 2 |
2,559 | 0 | 5.1 mi | |
| Palmer Plantation MUD 1 |
2,031 | 1 | 5.3 mi | |
| Fort Bend County MUD 46 |
2,247 | 0 | 5.9 mi |
Non-community systems in Fort Bend County (114: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Fort Bend County, nearest to Sienna 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.