Colorado Springs Water Quality
Understanding what's in your tap water in Colorado Springs, Colorado
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Where Colorado Springs' Water Comes From
Colorado Springs Utilities draws from a diverse portfolio of mountain sources anchored by the Pikes Peak watershed. Local reservoirs including Rampart Reservoir and Pikeview Reservoir collect water from the high-elevation forests west of the city.
The city also imports significant supply from the Western Slope through the Homestake Pipeline (shared with Aurora) and the Fryingpan-Arkansas Project, which diverts water from the Fryingpan River basin through the Boustead Tunnel and into the Arkansas River drainage. This multi-source approach provides supply reliability but means water characteristics can shift depending on which sources are active.
How Colorado Springs Treats Its Water
Colorado Springs Utilities uses conventional treatment including coagulation, flocculation, sedimentation, and filtration. What makes Colorado Springs notable among major Front Range cities is its use of free chlorine as the primary residual disinfectant rather than chloramine.
Free chlorine is a stronger, more reactive disinfectant that provides robust pathogen control but dissipates faster in the distribution system and can produce higher levels of disinfection byproducts (DBPs) such as trihalomethanes (THMs) and haloacetic acids (HAAs). Residents are more likely to notice a chlorine taste and smell compared to chloramine-treated cities like Denver or Aurora.
The utility also adds fluoride for dental health and applies corrosion control measures to protect the distribution system and household plumbing.
PFAS and Military Installations
Colorado Springs is home to multiple major military installations — Peterson Space Force Base, Schriever Space Force Base, and the United States Air Force Academy (USAFA) — where PFAS-containing aqueous film-forming foam (AFFF) has been used extensively in firefighting training exercises. PFAS contamination has been detected in groundwater near these facilities. While the municipal drinking water supply is primarily surface water-based, the proximity of these contamination plumes to the city's water infrastructure warrants awareness. Colorado Springs Utilities monitors for PFAS compounds and publishes results, but residents near military installations — especially those on private wells — should consider independent testing.
Common Water Quality Concerns in Colorado Springs
Colorado Springs water ranges from 4-10 grains per gallon depending on the source blend, placing it in the moderately hard to hard category. This level of hardness accelerates scale buildup in water heaters, reduces soap efficiency, and leaves white mineral deposits on fixtures, glassware, and shower doors. Many households invest in water softeners to manage these effects.
The concentration of military bases in the Colorado Springs area — Peterson SFB, Schriever SFB, USAFA, and Fort Carson — creates a PFAS risk profile unlike most Colorado cities. AFFF usage at these installations has resulted in groundwater contamination that is being monitored and remediated. While municipal surface water supply has a different risk profile than local groundwater, residents in neighborhoods adjacent to these bases should understand their exposure potential and consider testing.
Because Colorado Springs uses free chlorine rather than chloramine, the chlorine taste and smell in tap water can be more noticeable than in other Front Range cities. Free chlorine is more volatile and produces a sharper sensory impact. The taste is typically strongest at taps closest to treatment facilities or booster stations and during warmer months when higher chlorine doses may be applied. Letting water sit in an open pitcher for 30 minutes or using a basic carbon filter can reduce the chlorine taste.
The 2012 Waldo Canyon Fire burned over 18,000 acres immediately adjacent to Colorado Springs, including critical watershed areas. Post-fire erosion dramatically increased sediment, ash, and organic matter in source water, challenging treatment capabilities. While recovery has progressed, the burned landscape remains more vulnerable to erosion during heavy rain events. Future wildfire risk in the Pikes Peak watershed continues to be a concern for long-term source water quality.
The most common resident complaints involve hard water effects (scale, dry skin, stiff laundry) and noticeable chlorine taste — particularly among residents who have lived in chloramine-treated cities and notice the difference. Some neighborhoods report stronger chlorine presence than others, depending on their position in the distribution system. Overall, residents tend to rate the water as safe but aesthetically less appealing than softer, chloramine-treated alternatives.
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Why Test at the Tap?
Colorado Springs Utilities publishes an annual water quality report confirming that water leaving the treatment plant meets all federal and state standards. But with free chlorine as the disinfectant, DBP levels can vary significantly depending on your location in the distribution system and the age of your pipes. Testing at the tap reveals what you're actually drinking — including chlorine residual, DBP levels, hardness, and any metals leaching from your home's plumbing.
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