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Tap water quality report

Holly, CO

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Holly. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
900
people served
18
contaminants found
Colorado rankings Lead in Colorado PFAS in Colorado

What was found in Holly'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
Fluoride
1200 µg/L 30%
of the EPA limit 4000 µg/L
 2/2 SYR4
Nitrate
140 µg/L 1.4%
of the EPA limit 10000 µg/L
 2/2 SYR4
Nitrate-Nitrite
110 µg/L 1.1%
of the EPA limit 10000 µg/L
 1/2 SYR4
Barium
48 µg/L 2.4%
of the EPA limit 2000 µg/L
 2/2 SYR4
Combined Radium (-226 And -228)
13.8 pCi/L 276%
of the EPA limit, in the worst sample — 5 pCi/L
 2/2 SYR4
Gross Alpha, Excl. Radon And U
8.23 pCi/L 55%
of the EPA limit 15 pCi/L
 2/2 SYR4
TTHM
7.5 µg/L 9.4%
of the EPA limit 80 µg/L
 2/2 SYR4
Gross Beta Particle Activity
6.9 pCi/L
No EPA limit set
 2/2 SYR4
Total Haloacetic Acids (HAA5)
1.9 µg/L 3.2%
of the EPA limit 60 µg/L
 2/2 SYR4
Combined Uranium
1.8 µg/L 6%
of the EPA limit 30 µg/L
 2/2 SYR4
Arsenic
1.6 µg/L 16%
of the EPA limit 10 µg/L
 2/2 SYR4
Bromoform
1.6 µg/L
No EPA limit set
 2/2 SYR4
Selenium
1.6 µg/L 3.2%
of the EPA limit 50 µg/L
 1/2 SYR4
Dibromoacetic Acid
1.2 µg/L
No EPA limit set
 1/2 SYR4
Toluene
1.2 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/2 SYR4
Dibromochloromethane
1 µg/L
No EPA limit set
 1/2 SYR4
Antimony, Total
0.8300 µg/L 14%
of the EPA limit 6 µg/L
 1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 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 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 Holly

SupplierPopulation served
HOLLY TOWN OF 800
A AND B WA INC 100

Frequently asked questions about Holly tap water

Is Holly tap water safe to drink?

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

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

What contaminants are in Holly's water?

The contaminants EPA monitoring detected in Holly include Fluoride, Nitrate, Nitrate-Nitrite, Barium, Combined Radium (-226 And -228). 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.