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Tap water quality report

Gypsum, CO

EPA monitoring detected 18 contaminants across the 1 water supplier serving Gypsum. 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
15,272
people served
18
contaminants found
Colorado rankings Lead in Colorado PFAS in Colorado

What was found in Gypsum'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
433.5 µg/L 4.3%
of the EPA limit 10000 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Nitrate-Nitrite
213 µg/L 2.1%
of the EPA limit 10000 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Fluoride
108.55 µg/L 2.7%
of the EPA limit 4000 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Barium
62.95 µg/L 3.1%
of the EPA limit 2000 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
TTHM
18.46 µg/L 23%
of the EPA limit 80 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Chloroform
8.695 µg/L
No EPA limit set
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
5.11 µg/L 8.5%
of the EPA limit 60 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Bromodichloromethane
3.215 µg/L
No EPA limit set
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Dichloroacetic Acid
3.08 µg/L
No EPA limit set
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Trichloroacetic Acid
2.8 µg/L
No EPA limit set
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
2.3965 pCi/L 16%
of the EPA limit 15 pCi/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Combined Uranium
1.76 µg/L 5.9%
of the EPA limit 30 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Dibromochloromethane
1.16 µg/L
No EPA limit set
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Combined Radium (-226 And -228)
0.6800 pCi/L 14%
of the EPA limit 5 pCi/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Simazine
0.4200 µg/L 11%
of the EPA limit 4 µg/L
Main supplier: GYPSUM TOWN OF · 15,272 people · 2019
1/1 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: GYPSUM TOWN OF · 15,272 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 Gypsum

SupplierPopulation served
GYPSUM TOWN OF 15,272

Frequently asked questions about Gypsum tap water

Is Gypsum tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Gypsum. 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 Gypsum?

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

What contaminants are in Gypsum's water?

The contaminants EPA monitoring detected in Gypsum include Nitrate, Nitrate-Nitrite, Fluoride, Barium, 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.