Claiborne Water Hardness & Quality Report (2026)

Claiborne, Louisiana, in Ouachita Parish — an Ouachita Parish community adjacent to Monroe and West Monroe on the Ouachita River in north Louisiana — receives its water from the Ouachita Parish Water system or Monroe Utilities, drawing from the Ouachita River through the north Louisiana distribution.

The moderately hard 103 mg/L hardness and TDS of 217 mg/L reflect the Ouachita Parish Ouachita River supply's moderate Coastal Plain character — the Cretaceous Nacatoch Sand is largely insoluble, while the Tertiary Wilcox Formation contributes modest calcareous clay mineral content from the north Louisiana Coastal Plain sediments (compare Monroe LA: 101/212 in Ouachita Parish comparable; West Monroe LA: 105/222 in Ouachita Parish comparable; Claiborne consistent moderate from the same Ouachita Parish Ouachita River Cretaceous-Tertiary supply). The Ouachita River at Ouachita Parish — Cretaceous Nacatoch Sand (insoluble — primary dilutant), Tertiary Wilcox Formation (slightly calcareous — primary hardness contributor), and Quaternary Ouachita alluvium (slightly calcareous — minor TDS).

At 103 mg/L with TDS 217, Claiborne's water is moderately hard — mild scale buildup in appliances. Semi-annual descaling is appropriate. The PFAS level of 9.8 ppt is very high — a certified drinking water filter with PFAS removal is strongly recommended — the Ouachita Parish north Louisiana industrial and military corridor (Monroe area chemical plants, Barksdale AFB area) contributes to Claiborne's very elevated PFAS readings.