Woodmere Water Hardness & Quality Report (2026)

Woodmere, Louisiana, in Jefferson Parish — a Jefferson Parish unincorporated community adjacent to Harvey and Marrero on the west bank of the Mississippi River in the New Orleans metro — receives its water from Jefferson Parish Water system, drawing from the Mississippi River at Jefferson Parish intakes through the southeast Louisiana metro distribution.

The moderately hard 140 mg/L hardness and TDS of 340.8 mg/L are somewhat elevated for a Mississippi River supply — Jefferson Parish draws water from a more mineralized section of the Mississippi compared to upriver communities, with Holocene delta alluvium and Pleistocene Prairie Formation calcareous deposits contributing dissolved minerals (compare Harvey LA: 138/338 in Jefferson Parish comparable; Marrero LA: 142/344 in Jefferson Parish comparable; Woodmere consistent moderate from the same Jefferson Parish Mississippi River delta supply). The Mississippi River at Jefferson Parish — Holocene Mississippi delta alluvium (slightly calcareous — primary contributor), Pleistocene Prairie Formation (calcareous — secondary hardness contributor), and Holocene brackish coastal deposits (chloride — TDS contributor).

At 140 mg/L with TDS 341, Woodmere's water is moderately hard — mild scale buildup in appliances over time. Semi-annual descaling is appropriate. The PFAS level of 12.3 ppt is very high — a certified drinking water filter with PFAS removal is strongly recommended — the Jefferson Parish southeast Louisiana industrial and petrochemical sources, plus upstream Mississippi River contamination, contribute to Woodmere's very elevated PFAS readings.