Auburn Water Hardness & Quality Report (2026)

The Water Works Board of the City of Auburn supplies drinking water to Auburn in Lee County, Alabama, home to Auburn University. The primary source is Lake Ogletree (300 acres), treated at the James Estes Water Treatment Plant, providing 45.1% of 2024 supply. Supplemental groundwater from two wells in the Chewacla Marble and Hollis Quartzite aquifers meets peak demand, with infrastructure including 50 million gallons of added capacity at Lake Ogletree. The utility voluntarily tests the watershed year-round for nutrients, bacteria, and taste and odour compounds in line with EPA and Alabama Department of Environmental Management standards.

The Lake Ogletree watershed spans 33 square miles, draining Chewacla and Nash Creeks through forested and rural Piedmont terrain into the reservoir southeast of Auburn. Underlying geology features Paleozoic Chewacla Marble — a metamorphosed limestone — and Hollis Quartzite, part of the region's metamorphic belt with influences from granitic intrusions. Surface waters pick up ions from schist and gneiss weathering, while aquifer extraction from carbonate-rich marble elevates mineral content, producing a moderately mineralised blended supply rather than the extreme hardness of pure limestone karst systems found elsewhere in Alabama.

Despite a soft and moderately mineralised supply, spots and films may appear on dishes and glassware after drying, and water heaters, dishwashers, washing machines, and bathroom surfaces can show mild scale or staining over time. Regular vinegar descaling, drain screens, and detergent boosters help mitigate these effects; a water softener is an option for households noticing persistent mineral-related issues. The 2024 Consumer Confidence Report confirms compliance with all EPA standards, including no MCL exceedances for lead or copper (90th percentile copper 0.2 mg/L); treatment at the James Estes Plant includes coagulation, sedimentation, filtration, and disinfection.