Fernley Water Hardness & Quality Report (2026)

Fernley Public Works, located at 595 Silverlace Blvd, Fernley, NV 89408 (phone 775-784-9913), supplies drinking water to the city of Fernley in Lyon County, Nevada, serving over 20,000 residents. The utility draws exclusively from local groundwater wells tapping the Carson River Valley aquifer system. Water is treated and tested regularly at facilities managed by the Water Treatment Supervisor and Utility Director; the most recent Consumer Confidence Report (CCR) is available via the City of Fernley website, confirming no violations of regulated contaminants in 2024.

The supply originates in the Carson River Valley watershed, where irrigated cropland south of Fernley provides principal recharge through infiltrating excess irrigation water, forming a groundwater mound beneath the area with flow directed toward playa areas north and east and the Truckee River valley near Wadsworth. Aquifers consist of irregular sand and gravel strata within late Pleistocene Lake Lahontan sediments, interbedded with silt, clay, and alluvium. The geology features mineral-rich limestone and volcanic deposits, imparting a very hard, highly mineralised character to the groundwater due to elevated calcium and magnesium dissolution.

As very hard water, Fernley's supply promotes significant scale buildup in pipes, fixtures, and appliances — most affecting water heaters, dishwashers, washing machines, coffee makers, and plumbing systems — with potential annual damage costs exceeding $1,700 per household. Soap and detergent efficiency drops, leaving residue on dishes, skin, and hair. Regular vinegar descaling, sediment pre-filters, and biannual water heater flushing are essential; a whole-home water softener is strongly recommended. Fernley's tap water meets federal and state standards with no 2024 CCR violations, but trace detections of arsenic, nitrate, uranium, TTHMs, chromium-6, and PFOS (at 5.60 ppt) exceed health advocacy guidelines.