Public water system record
Sienna Regional MUD
Serves Sienna, Fort Bend County, TX · Population served not reported
Federal records show no health-based violations and 1 monitoring/reporting issue for Sienna Regional MUD in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- Sienna Regional MUD draws water from 5 wells (1 of them for emergency, seasonal or other part-time use).
- Record on file since 2013, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 11 service lines.
Check whether Sienna Regional MUD serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Fluoride
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
Full record since 2013
EPA's records for Sienna Regional MUD go back to 2013. Before October 19, 2016 they list no health-based violations and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2010 to October 18, 2016 | 0 | 2 |
| 2020s | 0 | 1 |
Where the water comes from
Sienna Regional MUD draws water from 5 wells (1 of them for emergency, seasonal or other part-time use). It also buys water from City of Missouri City Mustang Bayou Wate. 9 other community water systems buy water from Sienna Regional MUD. 1 other public water system has an emergency connection to Sienna Regional MUD.
Buys water from
- City of Missouri City Mustang Bayou Wate Missouri City, TX
Community systems that buy water from it
- City of Missouri City Missouri City, TX
- Sienna MUD 10 Houston, TX
- Sienna MUD 12 Houston, TX
- Sienna MUD 3 Houston, TX
- Sienna MUD 4 Houston, TX
- Sienna MUD 6 Houston, TX
- Sienna MUD 7 Houston, TX
- Sienna Management District Sugar Land, TX
- Sienna Plantation Management District Houston, TX
Annual water quality report
Sienna Regional MUD must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Texas.
Certified drinking water labs by state EPA guidance for private wells