Water Quality Reports > Houston TX Drinking Water Quality Report
Water Quality Score
F
Houston TX Drinking Water Quality
Water Quality Factors
  • Failed some Health Guidelines
  • Failed some Legal Limits
  • Failed some Reporting and Monitoring Requirements
  • Uses Chlorine disinfectant

Houston's water quality is managed by the life cycle of a raindrop. Depending on where the rain falls, it either enters the storm drain system or surface water that leads to Lake Houston. All water is then treated at the Public Works and Engineering Department (PWE). When it rains in Houston, the low elevation combined with massive amounts of impervious cover makes the city prone to frequent flooding. This causes everything on the ground to be washed into the storm sewer systems such as oil, pesticides, and sediment. In recent years, radioactive elements, arsenic and potentially carcinogenic disinfectant byproducts have exceeded health guidelines.

Houston, TX Drinking Water Top Suppliers

Water SupplierWater Supply SourcePopulation ServedService Connections
City Of Houston
Po Box 1562 Houston, TX 77251-1562
Surface Water 2,257,000 1,024,820
City Of South Houston
Po Box 238 South Houston, TX 77587-0238
Purchased Surface Water 13,116 4,372
City Of Houston Utility District 5 Kingw
Po Box 1562 Houston, TX 77251-1562
Ground Water 71,952 23,984
Data Sources:
EPA 2012 SDWIS Report

Houston, TX Water Quality Recent Violations

There were no health violations for in the 2010-2012 reporting periods

There were 3 other violations found in Houston, TX by the EPA in the 2010-2012 reporting periods. They are listed in the table below.

Drinking Water Rule or ContaminantDate Violation Last Reported Violation TypeViolationNumber of ViolationsAvg ViolationMax ViolationState Standard Unit of MeasureEnforcement Action
Total Coliform Rule 2012-09-18 Monitoring or reporting violation Monitoring, Routine Major (TCR) 1 0 Violation/Reminder Notice
Ground Water Rule 2011-03-21 Monitoring or reporting violation Monitoring, Source Water (GWR) 1 0 Public Notification Received
Stage 1 Disinfection By Product Rule 2010-12-22 Monitoring or reporting violation Monitoring and Reporting (DBP) 1 0 Compliance Achieved
To see the latest EPA monitoring report for visit the EPA at SDWIS Report
To see the latest EPA monitoring report for visit the EPA at SDWIS Report
To see the latest EPA monitoring report for visit the EPA at SDWIS Report

Houston, TX Water Quality Historical Violations

Detected
53
Above Health Limits
7
Below Limits
41
ContaminantTotal Tests Positive ResultsAbove Health LimitsAbove Legal LimitsEPA RegulatedMax ResultHealth Limit Legal Limit
Arsenic (total) 6 5 5 4 Yes 14 2 10
Alpha particle activity 15 14 14 2 Yes 21.70 - 15
Total haloacetic acids (HAAs) 53 52 1 2 Yes 366 70 60
Gross beta particle activity (pCi/L) 16 16 1 1 Yes 16.20 15 15
Total trihalomethanes (TTHMs) 18 18 0 1 Yes 171 - 80
Radium-226 16 16 16 0 Yes 4.90 0.05 5
Arsenic (total) 23 19 15 0 Yes 19.50 2 10
Combined Uranium (mg/L) 4 4 4 0 Yes 17.10 0.50 30
Radium-228 16 4 4 0 Yes 2.20 0.02 5
Alpha particle activity 3 2 2 0 Yes 5 - 15
Lead (total) 22 2 2 0 Yes 6.20 0.20 15
Trichloroacetic acid 56 55 2 0 Yes 99.60 20 60
1,2,4-Trimethylbenzene 22 1 0 0 No 1.50 - -
2-Hexanone 4 1 0 0 No 2.20 - -
Acetone 26 2 0 0 No 45 6000 -
Alpha particle activity (incl. radon & uranium) 1 1 0 0 Yes 16.40 - 15
Aluminum 22 11 0 0 No 62.60 - -
Atrazine 15 12 0 0 Yes 0.40 3 3
Barium (total) 23 22 0 0 Yes 52.10 2000 2000
Benzene 22 4 0 0 Yes 0.69 100 5
Bromochloroacetic acid 68 55 0 0 No 57.90 - -
Bromodichloromethane 81 65 0 0 Yes 55.90 100 80
Bromoform 81 45 0 0 Yes 46.90 800 80
Butane 2 2 0 0 No 1.70 - -
Chloroform 81 67 0 0 Yes 54 70 80
Chromium (total) 19 2 0 0 Yes 2.41 100 100
Combined Uranium (pCi/L) 1 1 0 0 Yes 3.90 15 15
Copper 23 16 0 0 Yes 34.10 1300 1300
Dalapon 55 3 0 0 Yes 4 200 200
Dibromoacetic acid 69 51 0 0 Yes 39.50 - 60
Dibromochloromethane 81 68 0 0 Yes 29 60 80
Dibromomethane 22 1 0 0 No 2.30 - -
Dichloroacetic acid 56 55 0 0 Yes 68 70 60
Dichloromethane (methylene chloride) 22 1 0 0 Yes 0.70 500 5
Ethylbenzene 26 6 0 0 Yes 7.20 700 700
Gross beta particle activity (pCi/L) 3 2 0 0 Yes 7.10 15 15
m- & p- Xylene 26 10 0 0 Yes 9.80 - 10000
Manganese 23 22 0 0 No 35.70 300 -
Methyl isobutyl ketone 26 5 0 0 No 38 - -
Metolachlor 15 1 0 0 No 0.11 700 -
Monobromoacetic acid 56 5 0 0 Yes 14.90 - 60
Monochloroacetic acid 59 37 0 0 Yes 90.50 70 60
Nitrate 38 37 0 0 Yes 1.18 10 10
Nitrite 16 3 0 0 Yes 0.10 1 1
o-Xylene 26 9 0 0 Yes 13 10000 10000
Pentane 12 1 0 0 No 1.60 - -
Selenium (total) 19 7 0 0 Yes 18.70 50 50
Simazine 15 6 0 0 Yes 0.17 4 4
Toluene 26 3 0 0 Yes 6.30 1000 1000
Total trihalomethanes (TTHMs) 63 50 0 0 Yes 203 - 80

11 Water Contaminants were tested for in the Houston, TX area but not found in drinking water between 2004 and 2009.

Data Source: NYTimes.com

The scores and results above reflect a summary of the historical drinking water testing results that has been documented by the EPA and other sources. The color coding of the symbols was developed by WaterFilterComparisions.com as an easy way for individuals to gauge the historical effectiveness of Houston water suppliers in meeting legal and health regulations in providing clean drinking water. This should only be used as a guide, and WaterFilterComparisons recommends you contact Houston water suppliers to better understand the quality of the drinking water in Houston, .