Public water system record
Northwest Harris County MUD 21
Serves Houston, Harris County, TX · 2,493 people served
Federal records show no health-based violations and no monitoring or reporting issues for Northwest Harris County MUD 21 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
- 0
Key facts
- Northwest Harris County MUD 21 draws water from 2 wells.
- Record on file since 2011, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 65 service lines.
Check whether Northwest Harris County MUD 21 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, and no monitoring or reporting violations either.
Full record since 2011
EPA's records for Northwest Harris County MUD 21 go back to 2011. Before October 19, 2016 they list no health-based violations and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2010 to October 18, 2016 | 0 | 1 |
Where the water comes from
Northwest Harris County MUD 21 draws water from 2 wells. It also buys water from North Harris County Regional Water Autho. 2 other community water systems buy water from Northwest Harris County MUD 21. 1 other public water system has an emergency connection to Northwest Harris County MUD 21.
Buys water from
- North Harris County Regional Water Autho Houston, TX
Community systems that buy water from it
- Fountainhead MUD Houston, TX
- Northwest Harris County MUD 22 Houston, TX
Annual water quality report
Northwest Harris County MUD 21 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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