Aurora, Colorado’s Home for Water Softeners, Water Filters,
& Water Delivery

While Aurora water complies with all national health and safety regulations, contamination and hard water can still persist in the area. Aurora Water also conducts more than 85,000 water quality tests each year.

Yes, the water is considered moderately hard. Average hardness levels are approximately 113 parts per million (ppm) as calcium carbonate, with reported ranges from about 56 to 154 ppm. Hardness in this range can contribute to scale buildup on fixtures, appliances, and plumbing over time.

Recent sampling for Aurora, Colorado drinking water detected the presence of PFAS chemicals. In April 2024 the EPA finalized the first national drinking water limits for PFAS, setting an enforceable maximum of 4 parts per trillion — 0.000000000004 — each for PFOA and PFOS. In May 2026 the EPA proposed extending the compliance deadline for those limits to 2031, and separately proposed rescinding the limits it had set for PFHxS, PFNA and HFPO-DA (GenX), so the rules for those three are currently unsettled. Click here to learn more about our whole house PFAS filtration systems.

Yes. Fluoride is present at an average level of approximately 0.72 ppm, which is below the EPA maximum contaminant level of 4.0 ppm. Fluoride in the water comes from natural erosion of mineral deposits and is monitored regularly as part of routine water quality testing.

The region relies heavily on snowmelt-driven water sources supported by a diversified supply system. Water can travel up to 150 miles and is drawn from the Arkansas, Colorado, and South Platte river basins. Supplies are stored in approximately 12 reservoirs and lakes, including Aurora, Homestake, Jefferson, Pueblo, Quincy, Rampart, Spinney Mountain, Strontia Springs, Turquoise, and Twin Lakes. Additional water comes from South Platte River withdrawals and alluvial groundwater wells near Cherry Creek.

Water is treated at three primary facilities. The Griswold and Wemlinger facilities can treat up to 80 million gallons per day. The Binney Water Purification Facility operates two treatment trains. Treated water is then disinfected before distribution.

Many homeowners choose additional treatment to address moderate hardness, taste concerns, or contaminants. A water softener can help reduce scale buildup caused by calcium and magnesium, while filtration systems can further improve drinking water clarity and taste at the tap.

You can access the most recent Aurora’s Tap Water Quality Report here.