Water Testing in Colorado: What You Should Know, What to Test For, and Where to Start

Colorado tap water looks clean. That is part of the problem.

Most water quality issues are invisible. You cannot see PFAS. You cannot see radon dissolved in your water. You cannot see chloramines or trace pharmaceuticals. You can sometimes taste chlorine or smell hydrogen sulfide from well water, but the things that matter most often have no sensory signal at all.

Water testing in Colorado is the only reliable way to know what is actually in your water. It is also the starting point for any water treatment decision that is worth making.

Why Colorado Water Deserves Special Attention?

Colorado sits at the intersection of several water quality factors that make testing here more important than in many other states.

Geology

Colorado bedrock and soil contain naturally occurring radionuclides including radon and uranium. These leach into groundwater, particularly in well water but also in some municipal supplies. Radon in water is a concern that many states do not need to prioritize. Colorado residents on well water, and even some on city water, do.

Hard Water

Over 85 percent of U.S. water is classified as hard. Colorado, particularly the Front Range, Denver Metro, and surrounding counties, has some of the highest hardness readings in the country. Hardness does not make water unsafe, but it causes significant household and equipment problems that testing can quantify precisely.

Municipal Treatment Chemistry

City water in Colorado is treated with chlorine or chloramines for disinfection. Both are effective at controlling biological contamination. Both can affect taste, odor, and skin health. Chloramines are harder to remove than chlorine and require specific filtration approaches. Knowing which disinfectant your utility uses affects which treatment you need.

PFAS Contamination

Per- and polyfluoroalkyl substances have been identified in water supplies across Colorado, linked in some areas to military bases, industrial sites, and agricultural runoff. PFAS compounds do not break down in the environment and accumulate in the body over time. Testing for PFAS in Colorado is increasingly relevant for both city and well water users.

Well Water Variability

Rural Colorado properties on private wells have no municipal treatment as a safety net. Well water quality varies based on local geology, agricultural activity, septic system proximity, and seasonal conditions. Annual testing is the baseline recommendation for any household on a private well.

What to Test For in Colorado Water?

A comprehensive water test in Colorado should address several categories of potential contaminants:

Basic Parameters

  • Hardness (calcium and magnesium levels)
  • pH (acidity or alkalinity)
  • Total dissolved solids (TDS)
  • Turbidity (clarity)

Chemical Contaminants

  • Chlorine or chloramine levels
  • Nitrates and nitrites (especially relevant for well water near agricultural land)
  • Lead (relevant in homes with older plumbing or lead solder)
  • Iron (causes red staining in fixtures and laundry)
  • Hydrogen sulfide (the rotten egg smell in well water)
  • PFAS, PFOA, PFOS compounds

Biological Contaminants

  • Coliform bacteria (indicator of contamination in well water)
  • E. coli
  • Viruses (for well water or systems with compromised source protection)

Radiological Parameters

  • Radon (dissolved in water)
  • Uranium
  • Radium (in specific geological areas)

Water Testing Options Available in Colorado

Colorado residents have several testing pathways depending on urgency, budget, and what they suspect may be present.

Free In-Home Water Testing

A certified water quality professional visits your home and tests your water on-site. This is the most practical starting point for homeowners. The test is calibrated to common local water concerns. You get results at your address, not at the lab door. You also get a clear, jargon-free explanation of what those results mean and what options exist to address any issues found.

Aqua Serve offers free in-home water testing across Colorado. The service includes professional analysis and clear recommendations, with no obligation to purchase anything.

DIY Water Testing Kits

A good option for homeowners who want a quick preliminary check. Aqua Serve provides free DIY water test kits that allow you to check basic parameters at home. These kits are a useful screening tool but are not a substitute for professional testing when specific contaminants are a concern.

Advanced Lab Testing

For detailed analysis of specific contaminants, particularly PFAS or radiological parameters, laboratory testing provides the most accurate results. Aqua Serve connects Colorado homeowners with advanced lab testing options for situations requiring in-depth analysis.

Phone Consultation

For households that have general questions about their water or want to discuss what to test before scheduling, a phone consultation with a certified water specialist is available. This helps you determine the right testing approach for your specific situation before committing to a service visit.

What Happens After You Test Water?

A water test result is only useful if it leads somewhere actionable. The value of professional testing is not just the data. It is the interpretation and the pathway forward.

Based on your test results, a water treatment specialist can recommend:

  • A whole house filtration system if chlorine or sediment is the primary concern
  • A water softener if hardness is elevated and causing appliance or household problems
  •  A reverse osmosis system for drinking water if PFAS, nitrates, or dissolved solids are present
  • UV purification if biological contamination is identified
  • A combination approach if multiple issues are present, which is common

The goal is not to sell the most expensive system. It is to match the treatment to the problem that testing actually identified.

Aqua Serve Water Testing Services

Aqua Serve has been serving Colorado since 1990 with a commitment to testing before recommending. They have more Water Quality Association-certified professionals on staff than any other company in Colorado, alongside a master plumber, a journeyman plumber, and a chemical engineer.

Water testing services are available for residential, commercial, and industrial clients. Testing options include free in-home analysis, DIY kits, advanced lab testing, and phone consultations. Aqua Serve is locally owned and operated, and serves communities across Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Jefferson, Weld, and surrounding areas.

Start with a free water test. 

Schedule your in-home water testing in Colorado with Aqua Serve at aquaserve4u.com. No pressure. Just answers about your water.

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