Public water system record
City of Katy
Serves Katy, Harris County, Waller County and 1 more county, TX · 25,253 people served
Federal records show no health-based violations and 2 monitoring/reporting issues for City of Katy 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
- 2
Key facts
- City of Katy draws water from 7 wells.
- Record on file since 1992, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 9,933 service lines.
Check whether City of Katy 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 |
|---|---|---|
|
E. coli
Monitoring and reporting
|
Jun 24, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
Full record since 1992
EPA's records for City of Katy go back to 1992. 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 |
|---|---|---|
| 1990s | 0 | 1 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 0 | 1 |
Where the water comes from
City of Katy draws water from 7 wells. It also has an emergency connection to Fort Bend County MUD 37. 1 smaller public system such as schools, businesses or campgrounds buys water from City of Katy. 1 other public water system has an emergency connection to City of Katy.
Emergency or part-time connections to
- Fort Bend County MUD 37 Houston, TX
Annual water quality report
City of Katy 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.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a 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