River Ridge Water Hardness & Quality Report (2026)

The Jefferson Parish Water Department supplies drinking water to River Ridge, Louisiana, and nearby communities like Harahan and parts of Metairie. Their entire water supply comes from the Mississippi River, drawn in near the parish's East Bank. This surface water is then treated at the Tom Frierson Water Treatment Plant and the Harold J. Zeringue Water Treatment Plant. These facilities use standard methods like coagulation, sedimentation, filtration, and disinfection to ensure the water meets federal safety standards for the roughly 100,000 residents across 64 square miles west of New Orleans.

The Mississippi River's journey across a vast 1.2 million square mile watershed is key to its water chemistry. As it flows from Minnesota to the Gulf of Mexico, the river picks up minerals from diverse geological sources. Upstream regions like the Ozark Plateau and Appalachian areas contribute calcium and magnesium from Paleozoic limestones and dolomites. Further downstream in Louisiana, the water encounters Quaternary floodplain sediments that are rich in calcareous clays. Unlike some other parts of the state that rely on aquifers like the Carrizo-Wilcox or Evangeline, this utility primarily uses the river, which is known for its hard water characteristics.

This hard water supply can lead to scale buildup in household appliances such as pipes, water heaters, and dishwashers, potentially reducing their efficiency and lifespan. Homeowners might notice increased energy costs for water heating and frequent need for descaling. Fixtures like faucet aerators and showerheads may clog quickly, impacting water pressure. For those looking to combat these issues, regular maintenance like monthly vinegar soaks for fixtures and annual water heater flushes can help. Installing scale-inhibiting filters is also an option. To prevent spotting on dishes and glassware, and to address dry skin or hair caused by soap scum, installing a whole-house water softener is often recommended, especially for larger homes.