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Tap water quality report

Idaho Springs, CO

EPA monitoring detected 14 contaminants across the 1 water supplier serving Idaho Springs. 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.

1
water supplier
10,432
people served
14
contaminants found
Colorado rankings Lead in Colorado PFAS in Colorado

What was found in Idaho Springs'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
Fluoride
954 µg/L 24%
of the EPA limit 4000 µg/L
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Nitrate
200 µg/L 2%
of the EPA limit 10000 µg/L
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Barium
145.6 µg/L 7.3%
of the EPA limit 2000 µg/L
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
TTHM
100.6 µg/L 126%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Nitrate-Nitrite
100 µg/L 1%
of the EPA limit 10000 µg/L
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2014
1/1 SYR4
Chloroform
94.44 µg/L
No EPA limit set
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
78.925 µg/L 132%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Trichloroacetic Acid
53.4 µg/L
No EPA limit set
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Dichloroacetic Acid
32.3995 µg/L
No EPA limit set
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Bromodichloromethane
5.185 µg/L
No EPA limit set
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Monochloroacetic Acid
2.442 µg/L
No EPA limit set
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.0995 µg/L
No EPA limit set
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Dibromochloromethane
0.5000 µg/L
No EPA limit set
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2019
1/1 SYR4
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
Main supplier: IDAHO SPRINGS CITY OF · 10,432 people · 2025
1/1 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 Idaho Springs

SupplierPopulation served
IDAHO SPRINGS CITY OF 10,432

Frequently asked questions about Idaho Springs tap water

Is Idaho Springs tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Idaho Springs. 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 Idaho Springs?

1 public water supplier report drinking-water monitoring for Idaho Springs, Colorado to the EPA. Each is listed above with its population served.

What contaminants are in Idaho Springs's water?

The contaminants EPA monitoring detected in Idaho Springs include Fluoride, Nitrate, Barium, TTHM, Nitrate-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.