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Tap water quality report

Crestone, CO

EPA monitoring detected 15 contaminants across the 2 water suppliers serving Crestone. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
2,299
people served
15
contaminants found
Colorado rankings Lead in Colorado PFAS in Colorado

What was found in Crestone'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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
400 µg/L 4%
of the EPA limit 10000 µg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2019
Highest in the city: 800 µg/L — CRESTONE WS · 293 people · 2019
2/2 SYR4
Fluoride
179.5 µg/L 4.5%
of the EPA limit 4000 µg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2019
1/2 SYR4
Barium
41.75 µg/L 2.1%
of the EPA limit 2000 µg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2014
Highest in the city: 50.8 µg/L — CRESTONE WS · 293 people · 2019
2/2 SYR4
Selenium
1.95 µg/L 3.9%
of the EPA limit 50 µg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2014
Highest in the city: 5 µg/L — CRESTONE WS · 293 people · 2019
2/2 SYR4
TTHM
3.86 µg/L 4.8%
of the EPA limit 80 µg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2019
2/2 SYR4
Gross Beta Particle Activity
2.4 pCi/L
No EPA limit set
Main supplier: BACA GRANDE WSD · 2,006 people · 2014
1/2 SYR4
Total Haloacetic Acids (HAA5)
1.69 µg/L 2.8%
of the EPA limit 60 µg/L
Highest in the city: CRESTONE WS · 293 people · 2019
1/2 SYR4
Gross Alpha, Excl. Radon And U
1.6 pCi/L 11%
of the EPA limit 15 pCi/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2014
1/2 SYR4
Bromodichloromethane
1.42 µg/L
No EPA limit set
Main supplier: BACA GRANDE WSD · 2,006 people · 2019
2/2 SYR4
Chloroform
1.185 µg/L
No EPA limit set
Main supplier: BACA GRANDE WSD · 2,006 people · 2019
2/2 SYR4
Dibromochloromethane
1.085 µg/L
No EPA limit set
Main supplier: BACA GRANDE WSD · 2,006 people · 2019
2/2 SYR4
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2014
1/2 SYR4
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2014
1/2 SYR4
Combined Radium (-226 And -228)
0.1000 pCi/L 2%
of the EPA limit 5 pCi/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2014
1/2 SYR4
Lead
0.0076 mg/L 51%
of the EPA limit 0.0150 mg/L
Main supplier: BACA GRANDE WSD · 2,006 people · 2025
2/2 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 Crestone

SupplierPopulation served
BACA GRANDE WSD 2,006
CRESTONE WS 293

Frequently asked questions about Crestone tap water

Is Crestone tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Crestone. 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 Crestone?

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

What contaminants are in Crestone's water?

The contaminants EPA monitoring detected in Crestone include Nitrate, Fluoride, Barium, Selenium, TTHM. 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.