Lake Jackson Water Hardness & Quality Report (2026)

Lake Jackson, Texas, in Brazoria County — a major southeast Texas Gulf Coast Brazos River planned community (Lake Jackson is a significant Brazoria County city — a southeast Texas suburban community and one of the most historically notable planned communities in the United States; Lake Jackson was master-planned and built from scratch in 1943 by Dow Chemical Company to house workers for its Freeport, Texas chemical complex (the Lake Jackson community plan — designed by the Alden B. Dow firm — is one of the most notable examples of mid-century corporate town planning in the American South; Dow's Lake Jackson features curved streets, a central park, and a communal design philosophy that was exceptional for its era)); today Lake Jackson is part of the greater Freeport–Clute–Lake Jackson 'Brazosport' corridor (one of the most significant petrochemical and chemical industry concentrations in the world — the Brazosport area on the Texas Gulf Coast is one of the most important chemical and petrochemical industrial clusters in the United States, including Dow Chemical, BASF, and Freeport LNG)), a diverse Brazoria County community with a significant chemical industry professional and working-class population — draws its municipal water supply via the City of Lake Jackson Water Division. Water hardness in Lake Jackson measures 265 mg/L — classified as very hard.

Lake Jackson's very hard supply reflects the southeast Texas Brazoria County Gulf Coast coastal plain supply's highly calcareous character. The Brazos River at Lake Jackson–Brazoria County drains Cretaceous calcareous Gulf Coastal Plain (highly calcareous). Very limited softening produces the very hard 265 mg/L.

At 265 mg/L, Lake Jackson residents face significant hard water challenges. Regular water softeners and descaling are strongly recommended. City of Lake Jackson Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.