Is Durango, CO Tap Water Safe? Quality & Contaminants

What was found in Durango's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	125 µg/L 1.3% of the EPA limit 10000 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 5660 µg/L — DURANGO WEST MD NO 2 · 930 people · 2019	30/37	SYR4
Nitrate-Nitrite	114 µg/L 1.1% of the EPA limit 10000 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 3761.2 µg/L — DURANGO WEST MD NO 2 · 930 people · 2019	30/37	SYR4
Fluoride	953.75 µg/L 24% of the EPA limit 4000 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 3402 µg/L — SOUTHWEST HORIZON RANCH · 323 people · 2019	26/37	SYR4
Chlorite	670 µg/L 67% of the EPA limit 1000 µg/L Highest in the city: LAKE DURANGO WA · 1,577 people · 2019	1/37	SYR4
Nitrite	555 µg/L 56% of the EPA limit 1000 µg/L Highest in the city: PURGATORY MD · 1,364 people · 2019	2/37	SYR4
Barium	79.225 µg/L 4% of the EPA limit 2000 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 521.2 µg/L — DURANGO FALFA MHC LLC · 40 people · 2019	30/37	SYR4
TTHM	53.9 µg/L 67% of the EPA limit 80 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 99.515 µg/L — EDGEMONT RANCH MD · 1,200 people · 2019	25/37	SYR4
Total Haloacetic Acids (HAA5)	32.41 µg/L 54% of the EPA limit 60 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 76.66 µg/L — NARROW GAUGE MHP · 150 people · 2019	25/37	SYR4
Chloroform	50.1 µg/L No EPA limit set Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 70 µg/L — LAKE DURANGO WA · 1,577 people · 2019	10/37	SYR4
Copper	66.615 µg/L 5.1% of the EPA limit 1300 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2015	2/37	SYR4
Dichloroacetic Acid	16.155 µg/L No EPA limit set Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 38.6 µg/L — DURANGO WEST MD NO 1 · 750 people · 2019	8/37	SYR4
Trichloroacetic Acid	15.2 µg/L No EPA limit set Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 31 µg/L — LAKE DURANGO WA · 1,577 people · 2019	8/37	SYR4
Chromium	8.315 µg/L 8.3% of the EPA limit 100 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 25.715 µg/L — EL RANCHO FLORIDA MD · 400 people · 2019	21/37	SYR4
Dibromochloromethane	1.85 µg/L No EPA limit set Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 21.6645 µg/L — EDGEMONT RANCH MD · 1,200 people · 2018	10/37	SYR4
Bromodichloromethane	8.02 µg/L No EPA limit set Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 20.44 µg/L — DURANGO WEST MD NO 1 · 750 people · 2019	11/37	SYR4
Dibromoacetic Acid	12.9 µg/L No EPA limit set Highest in the city: EDGEMONT RANCH MD · 1,200 people · 2018	5/37	SYR4
Monochloroacetic Acid	2.185 µg/L No EPA limit set Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 12.9 µg/L — EDGEMONT RANCH MD · 1,200 people · 2018	7/37	SYR4
Lithium	12 µg/L No EPA limit set Main supplier: DURANGO CITY OF · 33,787 people · 2023	1/37	UCMR-5
Combined Uranium	0.4600 µg/L 1.5% of the EPA limit 30 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2016 Highest in the city: 11.4237 µg/L — FALLS CREEK RANCH · 215 people · 2014	19/37	SYR4
Bromoform	10.876 µg/L No EPA limit set Highest in the city: EDGEMONT RANCH MD · 1,200 people · 2018	8/37	SYR4
Selenium	10.23 µg/L 20% of the EPA limit 50 µg/L Highest in the city: DURANGO REGENCY MHP · 200 people · 2018	19/37	SYR4
Gross Alpha, Excl. Radon And U	0.8726 pCi/L 5.8% of the EPA limit 15 pCi/L Main supplier: DURANGO CITY OF · 33,787 people · 2016 Highest in the city: 6.78 pCi/L — TWILIGHT WC · 78 people · 2019	19/37	SYR4
Lead	0.9000 µg/L 6% of the EPA limit 15 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2015 Highest in the city: 5.075 µg/L — ELBERT CREEK WATER CO · 750 people · 2016	3/37	SYR4
Gross Beta Particle Activity	5 pCi/L No EPA limit set Highest in the city: ELBERT CREEK WATER CO · 750 people · 2019	3/37	SYR4
Endothall	3.6 µg/L 3.6% of the EPA limit 100 µg/L Highest in the city: KNOLLS AT DURANGO HOA · 150 people · 2017	1/37	SYR4
Monobromoacetic Acid	3.6 µg/L No EPA limit set Highest in the city: EDGEMONT RANCH MD · 1,200 people · 2018	4/37	SYR4
Di(2-ethylhexyl) Phthalate	3.3 µg/L 55% of the EPA limit 6 µg/L Highest in the city: DURANGO JCMHP, LLC · 100 people · 2017	4/37	SYR4
Combined Radium (-226 And -228)	0.0985 pCi/L 2% of the EPA limit 5 pCi/L Main supplier: DURANGO CITY OF · 33,787 people · 2016 Highest in the city: 2.5725 pCi/L — FORREST GROVE ESTATES · 92 people · 2019	24/37	SYR4
Arsenic	2.08 µg/L 21% of the EPA limit 10 µg/L Highest in the city: SOUTHWEST HORIZON RANCH · 323 people · 2019	11/37	SYR4
Xylenes, Total	1.97 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: PURGATORY MD · 1,364 people · 2019	1/37	SYR4
Antimony, Total	0.9000 µg/L 15% of the EPA limit 6 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019	1/37	SYR4
Cadmium	0.3700 µg/L 7.4% of the EPA limit 5 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 0.7750 µg/L — ELBERT CREEK WATER CO · 750 people · 2019	2/37	SYR4
Thallium, Total	0.1000 µg/L 5% of the EPA limit 2 µg/L Main supplier: DURANGO CITY OF · 33,787 people · 2019 Highest in the city: 0.7000 µg/L — PINON HEIGHTS MHP · 43 people · 2019	7/37	SYR4
Toluene	0.5200 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: LOS RANCHITOS HOA · 120 people · 2019	1/37	SYR4
2,4-D	0.3000 µg/L 0.4% of the EPA limit 70 µg/L Highest in the city: ELBERT CREEK WATER CO · 750 people · 2019	1/37	SYR4
Benzo(A)Pyrene	0.0350 µg/L 18% of the EPA limit 0.2000 µg/L Highest in the city: DURANGO JCMHP, LLC · 100 people · 2017	1/37	SYR4
Lead	0.0031 mg/L 21% of the EPA limit 0.0150 mg/L Main supplier: DURANGO CITY OF · 33,787 people · 2025 Highest in the city: 0.0088 mg/L — ANIMAS WC · 3,096 people · 2025	34/37	LCR

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Durango

Supplier	Population served
DURANGO CITY OF	33,787
ANIMAS WC	3,096
LAKE DURANGO WA	1,577
PURGATORY MD	1,364
EDGEMONT RANCH MD	1,200
DURANGO WEST MD NO 2	930
ELBERT CREEK WATER CO	750
DURANGO WEST MD NO 1	750
EL RANCHO FLORIDA MD	400
SOUTHWEST HORIZON RANCH	323
ANIMAS VIEW MHP CO-OP	292
WESTSIDE MHP	236
FALLS CREEK RANCH	215
DURANGO REGENCY MHP	200
BLUE SKY RANCH INC ASSOC OF OWNERS	180
NARROW GAUGE MHP	150
DURANGO NORTH VILLAGE	150
KNOLLS AT DURANGO HOA	150
ISLAND COVE PARK	143
LOS RANCHITOS HOA	120
UTE PASS WA INC	120
OLD HOMESTEAD MHP	120
DURANGO JCMHP, LLC	100
HERMOSA VILLAGE	98
GOODMAN POA	96
FORREST GROVE ESTATES	92
TWILIGHT WC	78
LAPLATA VISTA ESTATES HOA	68
ESCALANTE VILLAGE	62
SIERRA VERDE WATER INC.	60
TALL PINES VILLAGE	60
LOS PRADOS HOA	45
PINON HEIGHTS MHP	43
DURANGO FALFA MHC LLC	40
TRIANGLE TP	39
WELL ON WHEELS WATER HAULER	25
SCENIC SQUARE SUBD	25

Frequently asked questions about Durango tap water

Is Durango tap water safe to drink?

EPA testing detected 37 contaminants in the water serving Durango. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Durango?

37 public water suppliers report drinking-water monitoring for Durango, Colorado to the EPA. Each is listed above with its population served.

What contaminants are in Durango's water?

The contaminants EPA monitoring detected in Durango include Nitrate, Nitrate-Nitrite, Fluoride, Chlorite, Nitrite. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.