Laramie Water Hardness & Quality Report (2026)

The City of Laramie Water Utility serves Laramie in Albany County, Wyoming, operating three major water sources. Surface water from the Big Laramie River contributes approximately 50% of supply (up to 6.5 million gallons per day) and is treated at a conventional Water Treatment Plant before distribution. Groundwater provides the remaining 50% via three wellfields — located north, east, and south of the city — each drawing from the Casper Aquifer and capable of producing 4–5 million gallons per day. Combined peak capacity reaches 20.5 million gallons per day.

Laramie lies within the Laramie River watershed, which drains the Laramie Range and surrounding basins. Groundwater is drawn from the Casper Aquifer, a major Cretaceous-age formation underlying much of southeastern Wyoming, composed of mineral-rich sedimentary rocks that contribute dissolved minerals to the supply. The USGS has identified the region as having generally good-quality groundwater based on low median dissolved-solids concentrations, though natural mineral content from both the aquifer and the river's watershed geology produces the hard character of the local supply.

Laramie's hard water causes scale buildup in kettles, coffee makers, showerheads, and water heaters, and reduces efficiency of dishwashers and washing machines over time. Soap and detergent performance is diminished. Regular descaling of appliances is recommended to maintain efficiency and extend lifespan. Point-of-use or whole-house water softening systems are a practical option for households wanting to further protect appliances and improve cleaning performance. The utility publishes an annual Consumer Confidence Report as required by the Safe Drinking Water Act; current pH, lead, copper, and contaminant data are available from the city's water department.