Grand Bayou Mobile Home Park Water Hardness & Quality Report (2026)

Grand Bayou Mobile Home Park, Louisiana, in Lafourche Parish — a Lafourche Parish community adjacent to Thibodaux and Luling in southeast Louisiana — receives its water from the Lafourche Parish Government utilities, drawing from the Mississippi River derived surface water (Lafourche Parish) through the southeast Louisiana distribution.

The moderately hard 99 mg/L hardness and TDS of 205.1 mg/L are slightly softer than the adjacent Bayou Boeuf community (145.5 mg/L) — reflecting Grand Bayou Mobile Home Park's supply position being served by a distribution zone with different Mississippi River treatment blend and slightly different bayou delta position relative to the saltwater Gulf intrusion margin. The Lafourche Parish surface water draws from the Mississippi River (calcareous — primary hardness contributor from Great Plains drainage), Quaternary Gulf Coastal Plain alluvium (slightly calcareous), and minor Gulf Coast brackish influence (TDS contributor) at the bayou delta position.

At 99 mg/L, Grand Bayou Mobile Home Park's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 9.5 ppt warrants a certified reverse osmosis drinking water filter — the southeast Louisiana petrochemical corridor and Naval Air Station Joint Reserve Base New Orleans (Jefferson Parish — AFFF) contribute to the elevated readings.