Brazoria County, Texas: drinking water report. Brazoria County lies south of Houston along the Gulf Coast, home to about 390,000 residents.
Brazoria County lies south of Houston along the Gulf Coast, home to about 390,000 residents. Water comes from the Brazos River Authority, local groundwater, and the Gulf Coast Water Authority. The county sits at the southern end of the Houston-area petrochemical corridor, with Dow Chemical's Freeport facility and other industrial operations forming a major part of the local economy and environmental landscape.
Brazoria County's industrial neighbors shape its water quality concerns. While the major chemical facilities operate on industrial water systems separate from drinking water, legacy contamination from decades of petrochemical activity has affected soils and groundwater in parts of the county. UCMR5 data shows PFAS detections in some county water systems.
According to the TCEQ's 2024 compliance data, county systems met federal standards. The Brazos River provides the primary surface water supply, and its quality varies seasonally with rainfall and upstream activity. Subsidence from historical groundwater pumping has also been an issue, though less severe than in Harris County to the north.
Industrial proximity makes water quality monitoring particularly important in Brazoria County, even when compliance data looks clean.
Check your water for current data specific to your provider. A reverse osmosis system provides the broadest protection. Our water filter guide covers options. Pull your detailed report, and visit our Texas page for statewide data.