Water quality report for zip code
77373
City of Houston Public Water System
Source: Lake Houston, Lake Livingston, and Trinity River
Largest system in Texas. Uses chloramines for disinfection. Surface water = higher DBPs, lower radium.
Key Water Quality Findings
12 contaminants testedhealth concern
Range: 0 - 0.45 ppm
Leaches from copper pipes, especially with corrosive water. Some Houston samples exceed the action level.
Data from 2023
health concern
Radioactive heavy metal found in some groundwater sources. Detected in Houston-area MUDs.
Data from 2023
health concern
Range: 24 - 54 ppb
Cancer-causing chemicals that form when chlorine reacts with organic matter in water. Houston's levels are legal but far exceed health guidelines.
Data from 2023
health concern
Range: 15 - 41 ppb
Another group of disinfection byproducts linked to cancer. Forms alongside TTHMs during water treatment.
Data from 2023
health concern
A potent carcinogen that occurs naturally in groundwater. Even low levels increase cancer risk over a lifetime.
Data from 2023
Additional Contaminants
health concern
The "Erin Brockovich" chemical. Houston's levels are legal but 35x higher than California's health guideline.
Data from 2023
health concern
Radioactive element found in groundwater. MUDs using well water often have elevated radium levels.
Data from 2023
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