Eugene Water Hardness & Quality Report (2026)

The Eugene Water & Electric Board (EWEB) provides drinking water to approximately 230,000 residents in Eugene and parts of Lane County, Oregon. The primary source is the McKenzie River, with intake at river mile 85 near Leaburg. Water is treated at the Hayden Bridge Filtration Facility, which includes filtration, disinfection, and fluoridation processes before distribution through an extensive pipeline network serving the city and surrounding areas.

The McKenzie River Watershed spans over 1,300 square miles in the western Cascade Range. Snowmelt and groundwater flow through Tertiary volcanic rock formations—including ancient lava beds and basalt layers—alongside sedimentary layers, contributing moderate mineral dissolution as water moves downstream. The Cascade Mountains' igneous and metamorphic bedrock imparts consistent mineral content to the supply without significant limestone dominance, resulting in a soft to moderately mineralized character.

Soft water from the McKenzie River minimizes scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing maintenance needs. Soap lathers easily and skin feels less dry compared to harder supplies. No water softener is typically recommended; occasional monitoring for localized variations can prevent minor spotting on fixtures. EWEB consistently meets EPA standards with no maximum contaminant level violations. The 2019 testing showed pH around 7.5–8.0, and treatment involves coagulation, sedimentation, filtration, and chloramination. No notable PFAS or lead issues have been reported; copper levels are compliant. Recent Consumer Confidence Reports affirm outstanding performance.