Water quality report for zip code
77502
City of Pasadena
Source: Purchases treated water from City of Houston
Serves City of Pasadena and surrounding areas. Surface water from Houston regional system.
Key Water Quality Findings
7 contaminants testedhealth concern
Range: 28 - 58 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: 18 - 42 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
health concern
Radioactive element found in groundwater. MUDs using well water often have elevated radium levels.
Data from 2023
health concern
Especially dangerous for pregnant women and infants. Often comes from agricultural runoff.
Data from 2023
Additional Contaminants
quality concern
Range: 7 - 16 gpg
Measured in grains per gallon (gpg). Houston water is "hard" to "very hard" at 8-20+ gpg, causing scale buildup and appliance damage.
Data from 2023
quality concern
Range: 2.1 - 3.6 ppm
Houston uses chloramines (chlorine + ammonia) instead of chlorine alone. Harder to remove, causes taste/odor issues, and can leach lead from pipes.
Data from 2023
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This report shows utility-wide averages. Your actual tap water varies based on your pipes, fixtures, and location in the distribution system. Get a free in-home test to know exactly what's coming out of your tap.