← Frederick, CO

Tap water quality report

ZIP 80621 — Frederick, CO

EPA monitoring across the 2 water suppliers serving ZIP 80621 in Frederick, CO detected 10 contaminants. A detection doesn't automatically mean the water is unsafe — see the highest level found below, with the EPA limit for each.

2
water suppliers
24,835
people served
10
contaminants found

What was found in ZIP 80621

The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
TTHM
119.1 µg/L 149%
of the EPA limit, in the worst sample — 80 µg/L
2/2 SYR4
Total Haloacetic Acids (HAA5)
77.7 µg/L 130%
of the EPA limit, in the worst sample — 60 µg/L
2/2 SYR4
Chloroform
55.4 µg/L
No EPA limit set
2/2 SYR4
Trichloroacetic Acid
26 µg/L
No EPA limit set
2/2 SYR4
Dichloroacetic Acid
25.9 µg/L
No EPA limit set
2/2 SYR4
Monochloroacetic Acid
8.12 µg/L
No EPA limit set
2/2 SYR4
Bromodichloromethane
5.9 µg/L
No EPA limit set
2/2 SYR4
Dibromochloromethane
1.71 µg/L
No EPA limit set
1/2 SYR4
Bromoform
0.5000 µg/L
No EPA limit set
1/2 SYR4
Lead
0.0060 mg/L 40%
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.

Water suppliers serving ZIP 80621

SupplierStatePopulation served
FREDERICK TOWN OF CO 17,173
CENTRAL WELD CNTY WD CO 7,662

Frequently asked questions about ZIP 80621 tap water

Is the tap water in ZIP 80621 safe to drink?

EPA testing detected 10 contaminants across the water suppliers serving ZIP 80621. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 80621?

2 public water suppliers report EPA drinking-water monitoring for ZIP 80621. Each is listed above with its population served.

What contaminants are in ZIP 80621's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Chloroform, Trichloroacetic Acid, Dichloroacetic Acid, and others across this ZIP's suppliers. The full list with levels and sources is above.