CITY OF HOUSTON
Texas - Community Water System - PWSID: TX1010013
System Information
| PWSID | TX1010013 |
| System Name | CITY OF HOUSTON |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 06 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Mar 14, 1980 |
| Last Reported | Mar 31, 2026 |
Location & Contact
| State | Texas |
| City | HOUSTON |
| ZIP Code | 77251-1562 |
| Address | PO BOX 1562 |
| Organization | MACCHI, RANDY |
| Phone | 832-393-1000 |
Population & Service
| Population Served | 2,970,543 |
| Service Connections | 990,181 |
Drinking Water Violations (29)
This water system has 29 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| May 1, 2025 | May 31, 2025 | TT | Yes | No | - | - | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | TT | Yes | No | - | - | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | TT | Yes | No | - | - | - | Resolved | May 31, 2025 | - | |
| May 1, 2025 | May 31, 2025 | TT | Yes | No | - | - | - | Resolved | May 31, 2025 | - | |
| Dec 1, 2019 | Dec 31, 2019 | MON | No | No | - | - | - | Resolved | Dec 31, 2019 | - | |
| Dec 1, 2019 | Dec 31, 2019 | MON | No | No | - | - | - | Resolved | Dec 31, 2019 | - | |
| Dec 1, 2019 | Dec 31, 2019 | MON | No | No | - | - | - | Resolved | Dec 31, 2019 | - | |
| Dec 1, 2019 | Dec 31, 2019 | MON | No | No | - | - | - | Resolved | Dec 31, 2019 | - | |
| Oct 1, 2015 | - | MR | No | No | - | TT | - | Resolved | Aug 23, 2016 | - | |
| Oct 1, 2015 | - | MR | No | No | - | TT | - | Resolved | Aug 23, 2016 | - | |
| Oct 1, 2015 | - | MR | No | No | - | TT | - | Resolved | Aug 23, 2016 | - | |
| Oct 1, 2015 | - | MR | No | No | - | TT | - | Resolved | Aug 23, 2016 | - | |
| May 1, 2015 | May 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2015 | - | |
| May 1, 2015 | May 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2015 | - | |
| May 1, 2015 | May 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2015 | - | |
| May 1, 2015 | May 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MR | No | Yes | - | - | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MR | No | Yes | - | - | - | Resolved | Aug 31, 2005 | - | |
| Aug 1, 2005 | Aug 31, 2005 | MR | No | Yes | - | - | - | Resolved | Aug 31, 2005 | - | |
| Dec 1, 2002 | Dec 31, 2002 | MR | No | Yes | - | - | - | Resolved | Dec 31, 2002 | - | |
| Jan 1, 1991 | Jan 31, 1991 | MCL | Yes | No | - | 5% of samples | - | Archived | Jan 31, 1991 | - | |
| Jan 1, 1991 | Jan 31, 1991 | MCL | Yes | No | - | 5% of samples | - | Archived | Jan 31, 1991 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.