Crowley Water Hardness & Quality Report (2026)

Crowley, Louisiana, in Acadia Parish — the Acadia Parish seat adjacent to Lafayette and Jennings in south-central Louisiana — receives its water from the City of Crowley Water, drawing from the Mermentau River or local Chicot aquifer (Acadia Parish) through the south-central Louisiana distribution.

The hard 166 mg/L hardness and TDS of 442.6 mg/L reflect the south-central Louisiana Acadia Parish supply's hard calcareous character — the Pleistocene Prairie Formation and Quaternary Gulf Coastal Plain alluvium contribute moderate calcareous hardness, elevated by the Mississippi River delta evaporative concentration typical of the south Louisiana rice country communities (Crowley is the self-styled "Rice Capital of the World"). The Mermentau-Chicot supply at Acadia Parish — Pleistocene Prairie Formation (slightly calcareous — primary hardness contributor), Quaternary Gulf Coastal alluvium (calcareous — secondary contributor), and Holocene marsh deposits (slightly calcareous — TDS contributor).

At 166 mg/L with TDS 443, Crowley's water is hard. A water softener is recommended to prevent scale buildup. A reverse osmosis system is advisable for drinking water. The PFAS level of 14.0 ppt is very high — a certified drinking water filter with PFAS removal is strongly recommended — the south-central Louisiana petrochemical industrial corridor (Acadia-Calcasieu Parishes) is a primary contributor to Crowley's very elevated PFAS readings.