Texas
Water quality data from the EPA Safe Drinking Water Information System
Water Systems
16,249
Active public water systems
Population Served
33.14M
Residents with piped water
Lead Violations
52
Systems exceeding 15 ppb
Copper Violations
307
Lead & Copper Rule
Average Lead Level
EPA Action Level: 15 ppb
MCLG (health goal): 0 ppb
Average across 6223 systems with reported lead data.
Violations Detected
359 water systems in Texas have reported violations under the Lead and Copper Rule. These utilities are required to notify customers and take corrective action.
Schools & Daycares
3 school or daycare water systems identified in this state. 1 have active violations.
Children are especially vulnerable to lead exposure. Schools are required to test for lead and remediate violations.
Water Systems: Highest Lead Levels
| System Name | City | Population | Lead Level | Status | Sample Date |
|---|---|---|---|---|---|
| HOUSTON | 76,323 | 9.90 ppb | OK | 1992-12-31 | |
| HOUSTON | 17,079 | 9.50 ppb | OK | 2025-12-31 | |
| KEMPNER | 17,721 | 9.26 ppb | OK | 2024-12-31 | |
| HOUSTON | 10,101 | 8.48 ppb | OK | 2025-12-31 | |
| HOUSTON | 18,000 | 7.90 ppb | OK | 1992-12-31 | |
| ANNA | 23,960 | 6.01 ppb | OK | 2025-06-30 | |
| SALADO | 10,056 | 5.26 ppb | OK | 2023-12-31 | |
| BROWNWOOD | 18,862 | 5.13 ppb | OK | 2023-12-31 | |
| ROUND ROCK | 130,662 | 5.05 ppb | OK | 2023-12-31 | |
| HOUSTON | 2,970,543 | 5.00 ppb | OK | 2024-06-30 | |
| FRIENDSWOOD | 43,190 | 4.61 ppb | OK | 2025-12-31 | |
| MIDLOTHIAN | 20,736 | 4.36 ppb | OK | 2023-12-31 | |
| MANSFIELD | 77,142 | 4.33 ppb | OK | 2024-12-31 | |
| SHEPPARD AFB | 19,500 | 4.30 ppb | OK | 2024-12-31 | |
| HORSESHOE BAY | 12,729 | 4.11 ppb | OK | 2025-12-31 |
Showing top 15 of 6125 systems with lead data. Action level: 15 ppb.
Systems With Active Violations
These water systems have exceeded EPA limits and must take corrective action.
TYLER · Pop. 107,000
Lead: 0.00 ppb (2023-12-31)
VICTORIA · Pop. 66,932
Lead: 0.00 ppb (2023-12-31)
LUFKIN · Pop. 51,236
Lead: 1.28 ppb (2025-12-31)
HALTOM CITY · Pop. 46,260
Lead: 2.00 ppb (2025-12-31)
SAN MARCOS · Pop. 43,552
Lead: 1.30 ppb (2023-12-31)
SAN ANTONIO · Pop. 37,563
Lead: 1.00 ppb (2025-12-31)
AUSTIN · Pop. 28,215
Lead: 1.22 ppb (2025-12-31)
LAKE JACKSON · Pop. 27,314
Lead: 0.90 ppb (2025-12-31)
LYTLE · Pop. 20,940
Lead: 0.70 ppb (2024-12-31)
JBSA LACKLAND · Pop. 20,907
Lead: 0.00 ppb (2025-12-31)
MANOR · Pop. 19,620
Lead: 1.20 ppb (2025-12-31)
WHITE SETTLEMENT · Pop. 18,522
Lead: 2.46 ppb (2023-12-31)
Water Source Types
Air Quality
GoodAvg AQI
46.5
PM2.5
6.8 µg/m³
Unhealthy Days
8
Primary Pollutant
Ozone
Source: EPA AirNow & American Lung Association 2024 State of the Air. AQI scale: 0–50 Good · 51–100 Moderate · 101–150 Sensitive Groups · 151+ Unhealthy.
PFAS Contamination
Moderate DetectionPFAS (per- and polyfluoroalkyl substances), known as “forever chemicals,” are a group of synthetic chemicals that persist indefinitely in the environment and human body. The EPA set a maximum contaminant level (MCL) of 4 parts per trillion (ppt) for PFOA and PFOS in April 2024. View national PFAS tracker →
Systems Tested
798
PFAS Detected
268
Detection Rate
33.6%
Exceeding MCL (4 ppt)
52(6.5%)
Highest recorded level: 88 ppt (EPA MCL: 4 ppt). Large systems with PFAS above federal threshold identified (USGS/EWG). Military installations, petrochemical industry. Largest state by number of water systems tested