Lebanon Water Hardness & Quality Report (2026)

The Lebanon Water Authority provides drinking water to over 25,000 residents in Lebanon City and surrounding areas of Lebanon County, Pennsylvania. Primary sources include Siegrist Dam surface water in Pine Grove Township, Schuylkill County, and Swatara Creek surface water, supplemented by groundwater wells tapping carbonate aquifers in the Lebanon Valley. Water is treated at the Authority's Water Treatment Plant with constant monitoring, and annual Consumer Confidence Reports are published — the 2023 CCR confirming compliance and detailing ongoing testing for the community.

Water originates from the Quittapahilla and Swatara watersheds, with groundwater drawn from local carbonate aquifers in the Lebanon Valley. Underlying Cambrian-Ordovician limestones and dolomites of the Beekmantown Group dissolve to impart a hard supply character, while surface waters pick up minerals from Triassic sandstones and shales in adjacent areas. This karstic geology leads to naturally mineralized water with elevated calcium and magnesium, shaping the overall chemistry without aggressive softening during treatment.

Hard water causes scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan. Showers and faucets may clog, and soap lathering is less effective, leaving residue on skin and laundry. Regular vinegar descaling, sediment filters, and a water softener are recommended for affected households. The 2023 CCR confirms EPA compliance; independent analyses note six contaminants exceeding health advocacy guidelines — including Bromodichloromethane, Chloroform, Chromium hexavalent, Dibromochloromethane, Nitrate, and Total trihalomethanes — at 76 ppm total dissolved solids. Treatment involves filtration and disinfection, with groundwater sources carrying moderate contamination risk per assessments.