Water quality report for zip code
77586
City of League City
Source: Groundwater and purchased surface water
Serves League City area in Galveston County.
Key Water Quality Findings
6 contaminants testedhealth concern
Range: 18 - 42 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
Another group of disinfection byproducts linked to cancer. Forms alongside TTHMs during water treatment.
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
health concern
No safe level of lead exists. Comes from old pipes and fixtures, not the water source. Even "passing" samples can have dangerous spikes.
Data from 2023
Additional Contaminants
quality concern
Range: 9 - 17 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
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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.