Contaminants Found in Denver, Aurora, Brighton & surrounding areas Water Supplies

Most homeowners assume their tap water is completely clean because it comes from a municipal water system. But recent water quality reports and independent testing databases show that water throughout Denver and surrounding Colorado cities can still contain harmful contaminants, treatment byproducts, heavy minerals, and other impurities.

While most local water systems meet current EPA legal standards, many homeowners are now researching water contamination, whole-home water filtration systems, reverse osmosis systems, and water softeners to improve the quality of the water their families use every day.

At Poseidon Plumbing, we help homeowners across Denver, Aurora, Brighton, Arvada, and surrounding Colorado communities understand what’s in their water and choose the right water filtration solution for cleaner, safer water.

Common Water Contaminants Found in Denver Metro Water Supplies

Water quality can vary depending on the city, infrastructure, water source, and treatment methods used. Across the Denver metro area, testing reports have identified contaminants and water quality concerns including:

Water Contaminant	Common Source	Why Homeowners Care
Total Trihalomethanes (TTHMs)	Chlorination process	Linked to long-term exposure concerns
Haloacetic Acids (HAA5/HAA9)	Water disinfection byproducts	Potential health concerns
Chromium-6	Natural deposits / industrial runoff	Emerging contaminant concern
PFAS (“Forever Chemicals”)	Industrial contamination	Long-term health concerns
Chlorine	Municipal disinfection	Strong taste & odor
Lead & Copper	Older plumbing systems	Plumbing and health risks
Hard Water Minerals	Colorado geology	Scale buildup & appliance damage
Sediment & Rust	Aging infrastructure	Reduced water quality
Nitrates	Agricultural runoff	Drinking water concerns

Denver Water Contamination Concerns

According to the Environmental Working Group (EWG) Tap Water Database, Denver’s water supply has shown measurable levels of several contaminants, including trihalomethanes, haloacetic acids, chromium-6, and chlorination byproducts.

Even though these levels may fall within current federal legal limits, many contaminants exceed stricter health-based recommendations established by independent research organizations.

Source:
https://www.ewg.org/tapwater/system.php?pws=CO0116001

Denver Water also acknowledges that treated drinking water can contain trace amounts of contaminants and continues monitoring emerging concerns such as PFAS compounds.

Source:
https://www.denverwater.org/your-water/water-quality/treated-water-quality-summary

Aurora Water Quality & PFAS Concerns

Aurora homeowners have become increasingly concerned about PFAS contamination and disinfection byproducts in local water systems. PFAS chemicals — often called “forever chemicals” — have become a growing national issue due to their persistence in water supplies and potential health risks.

Areas surrounding military installations and industrial zones near Aurora have received additional attention related to PFAS monitoring.

Aurora Water states that it performs more than 85,000 water quality tests annually.

Source:
https://www.auroragov.org/Residents/Water/water_system/water_quality

Additional water quality data:
https://www.tapwaterdata.com/co/aurora

Brighton Water Quality Issues

Brighton water systems commonly deal with hard water minerals, sediment, chlorination byproducts, and runoff-related contaminants due to the area’s reliance on surface water sources connected to the South Platte River watershed.

Homeowners in Brighton frequently report:

• Hard water buildup
• Mineral scaling
• Chlorine taste and odor
• Sediment issues

Source:
https://www.brightonco.gov/3283/Brighton-Drinking-Water-Quality-Report

Arvada Water Contaminants

Water quality reports and independent testing databases for Arvada have identified contaminants including:

• Total trihalomethanes (TTHMs)
• Haloacetic acids
• Lithium
• Hard water minerals
• Chlorination byproducts

Independent testing databases also report that several contaminants exceed stricter health-based guidelines, despite remaining within current EPA compliance standards.

Source:
https://www.ewg.org/tapwater/system.php?pws=CO0130001

Why Colorado Homes Have Hard Water Problems

One of the biggest water quality complaints throughout Denver, Arvada, Aurora, and Brighton is hard water.

Colorado’s natural geology contains high levels of calcium and magnesium, which creates mineral-heavy water that can cause:

• White buildup on faucets and showerheads
• Water spots on dishes
• Reduced water heater efficiency
• Appliance wear and tear
• Dry skin and brittle hair
• Pipe scale buildup

Denver Water specifically recognizes water hardness as a common issue across the region.

Source:
https://www.denverwater.org/your-water/water-quality

Signs Your Home May Need a Water Filtration System

Many homeowners don’t realize their water quality problems until they start noticing symptoms around the house.

Common signs include:

• Bad tasting tap water
• Chlorine smell
• White chalky residue
• Cloudy water
• Dry skin after showering
• Water spots on dishes
• Reduced appliance lifespan
• Sediment in water
• Staining around fixtures

If you’re experiencing these issues, installing a water filtration system or water softener may significantly improve your home’s water quality.

Best Water Filtration Systems for Denver Area Homes

Different homes require different water treatment solutions depending on the contaminants present in the water supply.

Popular water filtration options include:

Whole-Home Water Filtration Systems

Filters water at the point it enters your home to improve water quality throughout the entire house.

Reverse Osmosis Systems

One of the most effective drinking water filtration systems for reducing contaminants and improving taste.

Water Softeners

Designed to remove hard water minerals that cause scaling and plumbing damage.

Carbon Filtration Systems

Excellent for reducing chlorine taste, odor, and many chemical contaminants.

Sediment Filters

Help capture dirt, rust, and debris before it enters your plumbing system.

Water Filtration & Water Softener Installation in Denver, Aurora, Brighton & Arvada

At Poseidon Plumbing, we help homeowners throughout the Denver metro area protect their homes and families with customized water filtration and water treatment solutions.

We proudly provide water filtration system installation and water softener services in:

• Denver
• Aurora
• Brighton
• Arvada
• Westminster
• Thornton
• Commerce City
• Broomfield
• Northglenn
• Surrounding Colorado communities

Whether you’re worried about PFAS, hard water, chlorine, sediment, or general water contamination, our team can help you choose the right solution for cleaner, healthier water.