Cloverleaf Water Hardness & Quality Report (2026)

Cloverleaf, Texas, in Harris County in the east Houston industrial corridor near Pasadena and Baytown — an unincorporated Harris County community adjacent to the Houston Ship Channel industrial complex and the Port of Houston — receives its municipal water from the Harris County Municipal Utility District or a local water supply corporation, drawing from a mixed supply combining surface water (Lake Houston on the Trinity River or Lake Conroe on the San Jacinto) with groundwater from the Chicot Aquifer in the Gulf Coastal Plain beneath east Harris County.

The extremely hard 368.5 mg/L hardness and extreme TDS of 1,094 mg/L are among the highest in the Texas dataset, reflecting the severely mineralized groundwater character of the east Harris County coastal plain. The Chicot Aquifer (Pleistocene-Pliocene Gulf Coastal Plain formation) in east Harris County and the adjacent Pasadena-Baytown industrial corridor contains calcium-sulfate-rich, highly mineralized groundwater influenced by the Gulf of Mexico saline transition zone — as the coastal plain's freshwater table thins toward the coast, deep Chicot formation groundwater accumulates calcium, magnesium, sulfate, and sodium from Gulf Coastal Plain evaporitic and marine sediments. Mixing this mineralized groundwater with surface water produces extraordinary TDS values exceeding 1,000 mg/L.

At 368.5 mg/L and TDS approaching 1,100 mg/L, Cloverleaf residents face some of the most mineralized municipal water in the Houston metro. Scale forms immediately on all heated water surfaces, the water has a pronounced mineral taste in unfiltered form, and dishwashers produce mineral-encrusted glassware without treatment. A whole-house water softener is effectively a household necessity at this hardness level. The critically elevated PFAS level of 10.8 ppt adds urgent concern — Cloverleaf's position in the Houston Ship Channel industrial corridor, surrounded by petrochemical refineries, chemical plants, and one of the most concentrated PFAS-generating industrial zones in the United States, demands a certified reverse osmosis drinking water system for this community.