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Get your water tested in Colorado.

The labs Colorado certifies to test drinking water, from the state’s own list. A lab test is the only way to know what is in your own tap or well.

The short answer

Colorado’s list has 54 labs certified to test drinking water: 26 in Colorado and 28 in other states. It also names 38 water utilities’ in-house labs, left out here because they test only their own systems’ water.

Certification is test by test, so check that a lab is certified for what you want tested, and call first: it will say which bottles to use and how soon the sample has to arrive.

Labs in Colorado

26 labs, by city.

Labs in Colorado, certified by Colorado
LabCityCertified for
Sangre De Cristo LaboratoryAlamosaBacteria, nitrate, lead and copper, metals, minerals and other inorganics
Eurofins DenverArvadaNitrate, minerals and other inorganics, organic chemicals, PFAS
Eurofins Reservoirs Environmental, Inc.ArvadaBacteria
Eagle River W / S DistrictAvonBacteria, lead and copper, metals, radioactivity
Gilpin County Public Health AgencyBlack HawkBacteria
El Paso County Health DepartmentColorado SpringsBacteria, nitrate, minerals and other inorganics
Colorado Analytical Laboratory - Commerce CityCommerce CityBacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Colorado Department of Health & EnvironmentDenverBacteria
SGS North America, Inc. - DenverDenverNitrate, lead and copper, metals, minerals and other inorganics
La Plata County Water Quality LaboratoryDurangoBacteria
GeoWater ServicesEvergreenBacteria
Colorado State UniversityFort CollinsBacteria
M.M.S Environmental LaboratoriesFort CollinsBacteria
Technology Laboratory, Inc.Fort CollinsNitrate, minerals and other inorganics, organic chemicals
Fort Morgan, City ofFt. MorganBacteria
Hazen ResearchGoldenNitrate, lead and copper, metals, minerals and other inorganics, radioactivity
Mesa County Public Health Regional LaboratoryGrand JunctionBacteria
IEH-Warren Analytical LaboratoryGreeleyBacteria
Weld County Department of Public Health & EnvironmentGreeleyBacteria, nitrate, lead and copper, metals, minerals and other inorganics, radioactivity
EAnalytics LaboratoryLovelandBacteria
Murray-Brown Laboratories, LLC.NorthglennBacteria
Pueblo Department of Public Health and EnvironmentPuebloBacteria
ACZ Laboratories, Inc.Steamboat SpringsNitrate, lead and copper, metals, minerals and other inorganics, radioactivity
Routt County Env. Health Dept.Steamboat SpringsBacteria
Northeast Colorado Health Dept.SterlingBacteria
SGS North America, Inc. - Wheat RidgeWheat RidgeNitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity

Labs in other states

28 labs Colorado certifies outside the state, by state and city. Ask whether a lab takes samples by mail, and how fast they have to arrive.

Labs in other states, certified by Colorado
LabCityCertified for
Onterris Laboratories, LLC. - CAEl Dorado Hills, CAOrganic chemicals, PFAS
Eurofins Pomona - CAPomona, CABacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Continental Water LaboratorySacramento, CABacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS
Eurofins SacramentoWest Sacramento, CAOrganic chemicals, PFAS
Pace Analytical Services - FLOrmond Beach, FLNitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Culligan Analytical LaboratoryRosemont, ILBacteria, nitrate, lead and copper, metals, minerals and other inorganics
Eurofins South Bend - INSouth Bend, INBacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Pace Analytical Services, LLC - Mansfield, MA (320 Forbes)Mansfield, MAOrganic chemicals, PFAS
National Testing LaboratoriesYpsilanti, MIBacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
Pace Analytical Services - MNMinneapolis, MNLead and copper, metals, organic chemicals
Energy Laboratories - BillingsBillings, MTNitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Energy Laboratories - HelenaHelena, MTOrganic chemicals, disinfection byproducts
Eurofins Built Environment Testing EastCary, NCAsbestos
RTI InternationalDurham, NCLead and copper, metals
SGS North America, Inc. - NCWilmington, NCOrganic chemicals, PFAS
EMSL Analytical, IncCinnaminson, NJBacteria, lead and copper, organic chemicals, PFAS, radioactivity, asbestos
SGS North America, Inc. - DaytonDayton, NJLead and copper, metals, organic chemicals, disinfection byproducts, PFAS
Eurofins AlbuquerqueAlbuquerque, NMOrganic chemicals, disinfection byproducts
Cardinal LaboratoriesHobbs, NMOrganic chemicals, disinfection byproducts
Alliance Technical Group, LLC-AkronCuyahoga, OHNitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Pace Analytical Services, LLC - Greensburg, PAGreensburg, PAMetals, radioactivity
Eurofins Lancaster Laboratories Environment Testing, LLCLancaster, PANitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS
SPL, Inc. ReadingReading, PANitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
GEL Laboratories, LLCCharleston, SCNitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, PFAS, radioactivity
Eurofins KnoxvilleKnoxville, TNOrganic chemicals
Environmental Science Corp.dba PACE TNMt. Juliet, TNBacteria, nitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, radioactivity
Chemtech - Ford LaboratoriesSandy, UTNitrate, lead and copper, metals, minerals and other inorganics, organic chemicals, disinfection byproducts, PFAS, radioactivity
Energy Laboratories - WYCasper, WYBacteria, nitrate, minerals and other inorganics, organic chemicals, radioactivity

What to ask a lab to test

Source: CDPHE certified drinking water laboratories, read Oct. 16, 2026. Labs are listed as the state lists them; what each is certified for is as far as the list says. Certifications change, so a lab’s own word is the latest.

A lab named for a water utility is listed apart. Distances on town pages are straight lines between ZIP code centers from the Census 2020 gazetteer. How labs are listed here.

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