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Tap water quality report

Greeley, CO

EPA monitoring detected 22 contaminants across the 6 water suppliers serving Greeley. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

6
water suppliers
140,822
people served
22
contaminants found
Colorado rankings Lead in Colorado PFAS in Colorado

What was found in Greeley'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
810 µg/L 20%
of the EPA limit 4000 µg/L
 1/6 SYR4
Chlorite
470 µg/L 47%
of the EPA limit 1000 µg/L
 1/6 SYR4
Nitrate
100 µg/L 1%
of the EPA limit 10000 µg/L
 1/6 SYR4
Nitrate-Nitrite
100 µg/L 1%
of the EPA limit 10000 µg/L
 1/6 SYR4
TTHM
95.5 µg/L 119%
of the EPA limit, in the worst sample — 80 µg/L
 2/6 SYR4
Barium
84 µg/L 4.2%
of the EPA limit 2000 µg/L
 1/6 SYR4
Total Haloacetic Acids (HAA5)
72.3 µg/L 120%
of the EPA limit, in the worst sample — 60 µg/L
 2/6 SYR4
Chloroform
55.4 µg/L
No EPA limit set
 2/6 SYR4
Trichloroacetic Acid
26 µg/L
No EPA limit set
 2/6 SYR4
Dichloroacetic Acid
25.9 µg/L
No EPA limit set
 2/6 SYR4
Lithium
25.7 µg/L
No EPA limit set
 1/6 UCMR-5
Bromodichloromethane
10.5 µg/L
No EPA limit set
 2/6 SYR4
Di(2-ethylhexyl) Phthalate
4.7 µg/L 78%
of the EPA limit 6 µg/L
 1/6 SYR4
Dibromochloromethane
4.45 µg/L
No EPA limit set
 1/6 SYR4
Monochloroacetic Acid
3.7 µg/L
No EPA limit set
 2/6 SYR4
Selenium
3 µg/L 6%
of the EPA limit 50 µg/L
 1/6 SYR4
Antimony, Total
1.4 µg/L 23%
of the EPA limit 6 µg/L
 1/6 SYR4
Monobromoacetic Acid
1.4 µg/L
No EPA limit set
 1/6 SYR4
Bromoform
0.9700 µg/L
No EPA limit set
 1/6 SYR4
2,4-D
0.2200 µg/L 0.3%
of the EPA limit 70 µg/L
 1/6 SYR4
Benzo(A)Pyrene
0.0320 µg/L 16%
of the EPA limit 0.2000 µg/L
 1/6 SYR4
Lead
0.0060 mg/L 40%
of the EPA limit 0.0150 mg/L
 6/6 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 Greeley

SupplierPopulation served
GREELEY CITY OF 132,310
CENTRAL WELD CNTY WD 7,662
WOODLANDS EAST 350
GREELEY MOBILE MANOR 180
GREEN ACRES MOBILE HOME PARK 180
PARADISE VILLAGE COOP MOBILE HOME PARK 140

Frequently asked questions about Greeley tap water

Is Greeley tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Greeley. 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 Greeley?

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

What contaminants are in Greeley's water?

The contaminants EPA monitoring detected in Greeley include Fluoride, Chlorite, Nitrate, Nitrate-Nitrite, TTHM. 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.