← Fort Collins, CO

Tap water quality report

ZIP 80521 — Fort Collins, CO

EPA monitoring across the 3 water suppliers serving ZIP 80521 in Fort Collins, CO detected 22 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

3
water suppliers
375,743
people served
22
contaminants found

What was found in ZIP 80521

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
860 µg/L 22%
of the EPA limit 4000 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
2/3 SYR4
Chlorite
330 µg/L 33%
of the EPA limit 1000 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 557.5 µg/L — FT COLLINS LOVELAND WD · 63,532 people · 2019
3/3 SYR4
Nitrate
98 µg/L 1%
of the EPA limit 10000 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 100 µg/L — GREELEY CITY OF · 132,310 people · 2019
2/3 SYR4
Nitrate-Nitrite
95.6 µg/L 1%
of the EPA limit 10000 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
2/3 SYR4
Barium
19.39 µg/L 1%
of the EPA limit 2000 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 75 µg/L — GREELEY CITY OF · 132,310 people · 2019
2/3 SYR4
TTHM
46.084 µg/L 58%
of the EPA limit 80 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 71.05 µg/L — GREELEY CITY OF · 132,310 people · 2019
3/3 SYR4
Chloroform
31.521 µg/L
No EPA limit set
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 50.35 µg/L — GREELEY CITY OF · 132,310 people · 2019
3/3 SYR4
Total Haloacetic Acids (HAA5)
35 µg/L 58%
of the EPA limit 60 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
3/3 SYR4
Lithium
25.7 µg/L
No EPA limit set
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2024
1/3 UCMR-5
Dichloroacetic Acid
14 µg/L
No EPA limit set
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 19.21 µg/L — GREELEY CITY OF · 132,310 people · 2019
3/3 SYR4
Trichloroacetic Acid
14 µg/L
No EPA limit set
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 15.1 µg/L — FT COLLINS LOVELAND WD · 63,532 people · 2019
3/3 SYR4
Bromodichloromethane
3.8 µg/L
No EPA limit set
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 9.565 µg/L — GREELEY CITY OF · 132,310 people · 2019
3/3 SYR4
Di(2-ethylhexyl) Phthalate
4.7 µg/L 78%
of the EPA limit 6 µg/L
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2019
1/3 SYR4
Dibromochloromethane
2.9875 µg/L
No EPA limit set
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2019
2/3 SYR4
Selenium
1.3 µg/L 2.6%
of the EPA limit 50 µg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
Highest in the ZIP: 2.825 µg/L — GREELEY CITY OF · 132,310 people · 2019
2/3 SYR4
Monochloroacetic Acid
2.1 µg/L
No EPA limit set
Main supplier: FT COLLINS CITY OF · 179,901 people · 2019
3/3 SYR4
Antimony, Total
1.4 µg/L 23%
of the EPA limit 6 µg/L
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2019
1/3 SYR4
Monobromoacetic Acid
1.4 µg/L
No EPA limit set
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2019
2/3 SYR4
Bromoform
0.9700 µg/L
No EPA limit set
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2019
1/3 SYR4
2,4-D
0.2200 µg/L 0.3%
of the EPA limit 70 µg/L
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2019
1/3 SYR4
Benzo(A)Pyrene
0.0320 µg/L 16%
of the EPA limit 0.2000 µg/L
Highest in the ZIP: GREELEY CITY OF · 132,310 people · 2019
1/3 SYR4
Lead
0.0028 mg/L 19%
of the EPA limit 0.0150 mg/L
Main supplier: FT COLLINS CITY OF · 179,901 people · 2025
Highest in the ZIP: 0.0040 mg/L — GREELEY CITY OF · 132,310 people · 2025
3/3 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.

Water suppliers serving ZIP 80521

SupplierStatePopulation served
FT COLLINS CITY OF CO 179,901
GREELEY CITY OF CO 132,310
FT COLLINS LOVELAND WD CO 63,532

Frequently asked questions about ZIP 80521 tap water

Is the tap water in ZIP 80521 safe to drink?

EPA testing detected 22 contaminants across the water suppliers serving ZIP 80521. 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 80521?

3 public water suppliers report EPA drinking-water monitoring for ZIP 80521. Each is listed above with its population served.

What contaminants are in ZIP 80521's water?

EPA monitoring detected Fluoride, Chlorite, Nitrate, Nitrate-Nitrite, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.