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Tap water quality report

Aspen, CO

EPA monitoring detected 25 contaminants across the 7 water suppliers serving Aspen. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

7
water suppliers
32,101
people served
25
contaminants found
Colorado rankings Lead in Colorado PFAS in Colorado

What was found in Aspen's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
4100 µg/L 41%
of the EPA limit 10000 µg/L
 6/7 SYR4
Nitrate-Nitrite
1500 µg/L 15%
of the EPA limit 10000 µg/L
 5/7 SYR4
Fluoride
1000 µg/L 25%
of the EPA limit 4000 µg/L
 6/7 SYR4
Barium
98 µg/L 4.9%
of the EPA limit 2000 µg/L
 6/7 SYR4
TTHM
21.1 µg/L 26%
of the EPA limit 80 µg/L
 7/7 SYR4
Total Haloacetic Acids (HAA5)
20.8 µg/L 35%
of the EPA limit 60 µg/L
 7/7 SYR4
Combined Uranium
17 µg/L 57%
of the EPA limit 30 µg/L
 6/7 SYR4
Chloroform
14.4 µg/L
No EPA limit set
 6/7 SYR4
Nitrite
9.3 µg/L 0.9%
of the EPA limit 1000 µg/L
 1/7 SYR4
Monochloroacetic Acid
7.4 µg/L
No EPA limit set
 3/7 SYR4
Bromoform
5.2 µg/L
No EPA limit set
 3/7 SYR4
Dichloroacetic Acid
5.16 µg/L
No EPA limit set
 4/7 SYR4
Dibromochloromethane
4.4 µg/L
No EPA limit set
 5/7 SYR4
Trichloroacetic Acid
4.23 µg/L
No EPA limit set
 2/7 SYR4
Selenium
3.8 µg/L 7.6%
of the EPA limit 50 µg/L
 4/7 SYR4
Bromodichloromethane
3.4 µg/L
No EPA limit set
 6/7 SYR4
Gross Alpha, Excl. Radon And U
2.3 pCi/L 15%
of the EPA limit 15 pCi/L
 3/7 SYR4
Arsenic
1.8 µg/L 18%
of the EPA limit 10 µg/L
 3/7 SYR4
Dibromoacetic Acid
1 µg/L
No EPA limit set
 2/7 SYR4
Monobromoacetic Acid
0.8900 µg/L
No EPA limit set
 1/7 SYR4
Pentachlorophenol
0.6300 µg/L 63%
of the EPA limit 1 µg/L
 1/7 SYR4
Combined Radium (-226 And -228)
0.5000 pCi/L 10%
of the EPA limit 5 pCi/L
 2/7 SYR4
Diquat
0.3000 µg/L 1.5%
of the EPA limit 20 µg/L
 1/7 SYR4
Bhc-Gamma
0.0300 µg/L 15%
of the EPA limit 0.2000 µg/L
 1/7 SYR4
Lead
0.0039 mg/L 26%
of the EPA limit 0.0150 mg/L
 7/7 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 single worst sample on record — 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 Aspen

SupplierPopulation served
ASPEN CITY OF 31,100
BRUSH CREEK WD 516
STARWOOD METROPOLITAN DISTRICT 300
WHITE HORSE SPRINGS WD 70
PHILLIPS MOBILE HOME PARK 44
PITKIN IRON HOA 41
WATER VIEW CONDOMINIUM ASSOC 30

Frequently asked questions about Aspen tap water

Is Aspen tap water safe to drink?

EPA testing detected 25 contaminants in the water serving Aspen. 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 Aspen?

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

What contaminants are in Aspen's water?

The contaminants EPA monitoring detected in Aspen include Nitrate, Nitrate-Nitrite, Fluoride, Barium, TTHM. The full list, with the highest level found 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.