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

Yes. Parker’s drinking water meets federal and state drinking water standards. The city completes required testing for regulated contaminants, and results are reviewed to confirm compliance with Safe Drinking Water Act requirements.

Yes. Parker’s tap water is generally considered moderately hard. Hardness comes from naturally occurring calcium and magnesium dissolved as water moves through soil and rock. While not a health concern, moderately hard water can contribute to scale buildup on plumbing fixtures, water heaters, and appliances, and may reduce soap efficiency over time.

Recent sampling for Parker, Colorado drinking water detected the presence of PFAS chemicals at low levels. The EPA is in the process of setting new maximum contaminant levels (MCLs), which range from 4 to 10 parts per trillion. In numbers, that would be 0.00000000004 for PFOA and PFOS individually, and up to 0.0000000001 for PFNA, PFHxS, and HFPO-DA (GenX chemicals). As shown in the water quality report, PFAS compounds such as PFOS, PFOA, PFHxS, PFNA, PFBS, PFBA, and PFHxA were detected at parts-per-trillion levels, with many samples reported at very low concentrations or not detected. Click here to learn more about our whole house PFAS filtration systems.

Yes. Fluoride is present in Parker tap water at average levels below the EPA maximum contaminant level of 4.0 ppm. Fluoride occurs naturally from mineral deposits and is monitored regularly as part of Denver’s water quality testing.

Parker’s drinking water comes from a combination of groundwater wells and treated surface water supplied by Denver Water. Groundwater is drawn from local aquifers and treated before being blended with Denver Water supplies. Denver Water sources originate from surface waters across a large watershed on both sides of the Continental Divide, including the South Platte River system and mountain reservoirs.

Parker treats its drinking water using multiple treatment steps designed to protect public health. This includes filtration to remove particles and microorganisms, followed by disinfection using chloramine to control bacteria and viruses. Additional treatment processes are used to manage corrosion and maintain water quality as water moves through the distribution system before reaching homes and businesses.

While Parker’s tap water meets all safety standards, many homeowners choose additional treatment to address moderate hardness, scale buildup, taste, or trace contaminants. A water softener can help protect plumbing and appliances from mineral scale, while filtration systems can further improve drinking water taste, odor, and clarity at the tap.

Parker Water & Sanitation District operates an extensive water quality monitoring program. Thousands of samples are collected annually across source water, treatment facilities, storage tanks, and the distribution system. Testing includes disinfectants, disinfection byproducts, lead and copper, radionuclides, inorganic contaminants, and unregulated substances under EPA monitoring programs.

While Parker reported several non-health-based monitoring and reporting violations in 2024—including missed or late samples for E. coli, chlorite, and chlorine dioxide—follow-up testing confirmed compliance, and the district corrected procedures to prevent future reporting errors. No evidence indicated these issues impacted drinking water safety.

You can access the most recent Parker Tap Water Quality Report here.