Colorado Water Quality Reports

Comprehensive water quality data for 307 cities across Colorado. View EPA-verified contaminant levels and get filter recommendations.

307

Cities

2

Safe

159

Monitor

93

At Risk

4

Limited testing

49

No Test Data

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Colorado water quality ranking EPA-certified testing labs Water utilities in Colorado

Water Quality by County

Explore aggregated water quality scores across Colorado counties. Scores are calculated based on EPA data and weighted by population.

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Data from 254 cities serving 5,502,473 people across 56 counties.

Common Contaminants in Colorado

248 cities in Colorado have at least one contaminant above EPA health guidelines.

Bromodichloromethane(214 cities)Dichloroacetic Acid (DCA)(184 cities)Gross Alpha (Excl. Radon and Uranium)(93 cities)Radium, combined (-226 & -228)(90 cities)Bromoform(76 cities)Uranium(75 cities)

Worried about Bromodichloromethane in your water?

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Cities in Colorado

Berkley

People Served1287K

154 results on file

Above Guidelines2

View Report →

Denver

People Served1287K

154 results on file

Above Guidelines2

View Report →

Four Square Mile

People Served1287K

154 results on file

Above Guidelines2

View Report →

Holly Hills

People Served1287K

154 results on file

Above Guidelines2

View Report →

Lakeside

People Served1287K

154 results on file

Above Guidelines2

View Report →

Lakewood

People Served1287K

154 results on file

Above Guidelines2

View Report →

Mountain View

People Served1287K

154 results on file

Above Guidelines2

View Report →

North Washington

People Served1287K

154 results on file

Above Guidelines2

View Report →

Sheridan

People Served1287K

154 results on file

Above Guidelines2

View Report →

Aurora

People Served487K

151 results on file

Above Guidelines4

View Report →

Cimarron Hills

People Served464K

143 results on file

Above Guidelines3

View Report →

Colorado Springs

People Served464K

143 results on file

Above Guidelines3

View Report →

Stratmoor

People Served464K

143 results on file

Above Guidelines3

View Report →

Shaw Heights

People Served193K

140 results on file

Above Guidelines6

View Report →

Sherrelwood

People Served193K

140 results on file

Above Guidelines6

View Report →

Westminster

People Served193K

140 results on file

Above Guidelines6

View Report →

Fort Collins

People Served180K

138 results on file

Above Guidelines2

View Report →

Laporte

People Served180K

138 results on file

Above Guidelines2

View Report →

Boulder

People Served166K

152 results on file

Above Guidelines2

View Report →

Thornton

People Served156K

154 results on file

Above Guidelines6

View Report →

Arvada

People Served147K

154 results on file

Above Guidelines3

View Report →

Pueblo

People Served113K

139 results on file

Above Guidelines5

View Report →

Garden City

People Served108K

144 results on file

Above Guidelines2

View Report →

Greeley

People Served108K

144 results on file

Above Guidelines2

View Report →

Broomfield

People Served106K

141 results on file

Above Guidelines2

View Report →

Highlands Ranch

People Served103K

152 results on file

Above Guidelines6

View Report →

Longmont

People Served102K

95 results on file

Above Guidelines2

View Report →

Castle Rock

People Served100K

116 results on file

Above Guidelines4

View Report →

Loveland

People Served97K

134 results on file

Above Guidelines2

View Report →

Fruita

People Served89K

101 results on file

Above Guidelines2

View Report →

Commerce City

People Served69K

148 results on file

Above Guidelines6

View Report →

Derby

People Served69K

148 results on file

Above Guidelines6

View Report →

Timnath

People Served64K

37 results on file

Above Guidelines2

View Report →

Parker

People Served60K

149 results on file

Above Guidelines6

View Report →

Stepping Stone

People Served60K

149 results on file

Above Guidelines6

View Report →

Englewood

People Served57K

138 results on file

Above Guidelines6

View Report →

Brighton

People Served55K

141 results on file

Above Guidelines7

View Report →

Vail

People Served52K

143 results on file

Above Guidelines3

View Report →

Northglenn

People Served49K

105 results on file

Above Guidelines3

View Report →

Cañon City

People Served35K

126 results on file

Above Guidelines5

View Report →

Canon City

People Served35K

126 results on file

Above Guidelines5

View Report →

Lincoln Park

People Served35K

126 results on file

Above Guidelines5

View Report →

Clifton

People Served35K

105 results on file

Above Guidelines2

View Report →

Fruitvale

People Served35K

105 results on file

Above Guidelines2

View Report →

Durango

People Served34K

23 contaminants listed, only PFAS results from EPA's UCMR 5 on file

Above Guidelines0

View Report →

Erie

People Served33K

132 results on file

Above Guidelines2

View Report →

Aspen

People Served31K

147 results on file

Above Guidelines5

View Report →

Cherry Creek

People Served31K

147 results on file

Above Guidelines7

View Report →

Greenwood Village

People Served31K

147 results on file

Above Guidelines7

View Report →

Littleton

People Served30K

No contaminant results on file

Above Guidelines0

View Report →

Pueblo West

People Served30K

135 results on file

Above Guidelines4

View Report →

Golden

People Served30K

143 results on file

Above Guidelines4

View Report →

West Pleasant View

People Served30K

143 results on file

Above Guidelines4

View Report →

Lafayette

People Served29K

107 results on file

Above Guidelines4

View Report →

Breckenridge

People Served28K

109 results on file

Above Guidelines4

View Report →

Firestone

People Served28K

36 results on file

Above Guidelines2

View Report →

Grand Junction

People Served26K

103 results on file

Above Guidelines2

View Report →

Orchard Mesa

People Served26K

103 results on file

Above Guidelines2

View Report →

Redlands

People Served26K

103 results on file

Above Guidelines2

View Report →

Fountain

People Served25K

150 results on file

Above Guidelines5

View Report →

Security-Widefield

People Served25K

150 results on file

Above Guidelines5

View Report →

Applewood

People Served24K

103 results on file

Above Guidelines3

View Report →

Fairmount

People Served24K

103 results on file

Above Guidelines3

View Report →

Windsor

People Served24K

36 results on file

Above Guidelines2

View Report →

Black Forest

People Served23K

147 results on file

Above Guidelines7

View Report →

Niwot

People Served21K

147 results on file

Above Guidelines4

View Report →

Louisville

People Served21K

117 results on file

Above Guidelines4

View Report →

Paragon Estates

People Served21K

117 results on file

Above Guidelines4

View Report →

Wheat Ridge

People Served20K

No contaminant results on file

Above Guidelines0

View Report →

Evans

People Served19K

36 results on file

Above Guidelines2

View Report →

Montrose

People Served19K

36 results on file

Above Guidelines2

View Report →

Cherry Hills Village

People Served19K

No contaminant results on file

Above Guidelines0

View Report →

Johnstown

People Served19K

138 results on file

Above Guidelines2

View Report →

Woodmoor

People Served18K

148 results on file

Above Guidelines4

View Report →

Superior

People Served17K

137 results on file

Above Guidelines2

View Report →

Estes Park

People Served17K

146 results on file

Above Guidelines4

View Report →

Kittredge

People Served16K

133 results on file

Above Guidelines2

View Report →

Frederick

People Served16K

36 results on file

Above Guidelines2

View Report →

Fort Lupton

People Served15K

131 results on file

Above Guidelines2

View Report →

Black Hawk

People Served15K

150 results on file

Above Guidelines6

View Report →

Sterling

People Served15K

109 results on file

Above Guidelines5

View Report →

Acres Green

People Served15K

103 results on file

Above Guidelines5

View Report →

Grand View Estates

People Served15K

103 results on file

Above Guidelines5

View Report →

Lone Tree

People Served15K

103 results on file

Above Guidelines5

View Report →

Meridian

People Served15K

103 results on file

Above Guidelines5

View Report →

Lucerne

People Served13K

37 results on file

Above Guidelines2

View Report →

The Pinery

People Served13K

147 results on file

Above Guidelines6

View Report →

Fort Morgan

People Served12K

137 results on file

Above Guidelines2

View Report →

Ken Caryl

People Served12K

No contaminant results on file

Above Guidelines0

View Report →

Federal Heights

People Served12K

101 results on file

Above Guidelines3

View Report →

Wellington

People Served12K

112 results on file

Above Guidelines5

View Report →

Trinidad

People Served11K

103 results on file

Above Guidelines2

View Report →

Alamosa

People Served11K

103 results on file

Above Guidelines2

View Report →

Pagosa Springs

People Served11K

150 results on file

Above Guidelines3

View Report →

Sterling Ranch

People Served11K

143 results on file

Above Guidelines2

View Report →

Steamboat Springs

People Served10K

36 results on file

Above Guidelines3

View Report →

Indian Hills

People Served10K

20 contaminants listed, record not matched to an EPA water system

Above Guidelines0

View Report →

Morrison

People Served10K

104 results on file

Above Guidelines2

View Report →

Salt Creek

People Served10K

151 results on file

Above Guidelines5

View Report →

Gunnison

People Served10K

147 results on file

Above Guidelines3

View Report →

Showing top 100 of 307 cities by population.

Use the search box above to find any city in Colorado.

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