Elmwood Water Hardness & Quality Report (2026)

Ellwood City Municipal Authority provides water to Ellwood City borough and surrounding areas in Lawrence County, Pennsylvania, serving approximately 8,000 residents. The primary sources are groundwater wells tapping the Burgoon Sandstone aquifer and surface water from Connoquenessing Creek, a tributary of the Beaver River. Treatment occurs at the Wirtanen Water Treatment Plant, employing filtration, chlorination, and corrosion control for the service area covering Ellwood City and portions of Wayne and Jefferson townships.

The Connoquenessing Creek watershed spans the Glaciated Allegheny Plateau, underlain by Devonian-Mississippian sedimentary rocks including shale, siltstone, and intermittent limestone layers from the Mahoning and Connoquenessing formations. Glacial deposits overlay fractured bedrock aquifers, facilitating mineral leaching into both surface and groundwater. This carbonate-influenced geology imparts a hard character, with magnesium and calcium ions dominating through dissolution from limestone outcrops and dolomite veins; upstream agriculture and light industry reinforce the mineralized profile without softening it.

Very hard water promotes significant scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan by up to 50%. Faucet aerators and showerheads clog rapidly; soap lathering diminishes, requiring more detergent. Annual descaling with vinegar solutions, installing sediment pre-filters, and biannual flushing of hot water tanks are recommended; a water softener is strongly advised to exchange calcium and magnesium ions. The system maintains pH 7.5–8.5 with compliance for lead (<5 ppb) and copper per 2017 CCR data; TTHMs range 40–60 ppb (below MCL); no PFAS detections reported; treatment includes coagulation with alum, dual-media filtration, chloramination, and fluoride addition at 0.7 mg/L.