Magnolia Water Hardness & Quality Report (2026)

Magnolia Waterworks provides drinking water to 11,355 residents in Magnolia, Columbia County, Arkansas. The utility draws its supply from Lake Columbia, a reservoir located west of Magnolia. Water undergoes conventional treatment, including pre-oxidation and chlorine disinfection, at the Magnolia Waterworks treatment plant. Residents can reach the utility by phone at 870-234-8524 or by mail at PO Box 429, Magnolia, AR 71754. The system has experienced two EPA MCL violations and has recorded two contaminants exceeding health guidelines, specifically PFAS and lead.

The local geology around Lake Columbia is characterized by Cretaceous-age formations such as the Ozan Formation and Nacatoch Sand. These deposits, prevalent in the Gulf Coastal Plain, include significant amounts of limestone and chalk. As these carbonate-rich bedrock layers dissolve, they release calcium and magnesium ions into the surface water. This natural leaching process contributes to the water's moderately hard character, typical of Arkansas surface water sources in this region, imparting a typical mineral content.

This moderately hard water can lead to scale buildup on fixtures and within appliances, gradually reducing their efficiency over time. You might notice reduced soap lathering and occasional spotting on glassware after washing. To combat scale, homeowners can perform appliance deliming every one to two years. For optimal appliance performance and longevity, a whole-house water softener is often recommended in areas with this water hardness level. Magnolia Waterworks also advises flushing taps for 30 seconds to 2 minutes to minimize potential lead exposure. The utility has noted two contaminants exceeding EPA health guidelines and has had two MCL violations, with PFAS and lead being specifically flagged.