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Tap water quality report

Greeley City of

EPA monitoring tested this supplier for 110 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
22
detected
132,310
people served
0
health-based violations
Colorado rankingsLead in ColoradoPFAS in Colorado
Water source
Surface water
Ownership
Local government
Counties served
Weld

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
50
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-07-01 → 2025-07-31
MR Monitoring Resolved 2025-07-01 → 2025-07-31
MR Monitoring Resolved 2025-07-01 → 2025-07-31
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2023-06-01 → 2023-06-30
MR Monitoring Resolved 2023-06-01 → 2023-06-30
MR Monitoring Resolved 2023-06-01 → 2023-06-30
MR Monitoring Resolved 2021-05-01 → 2021-05-31

Other contaminants detected

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
95.5 µg/L 119%
of the EPA limit, in the worst sample — 80 µg/L
 258/258 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
47 µg/L 78%
of the EPA limit 60 µg/L
 256/256 SYR4 2012–2019
Chlorite
470 µg/L 47%
of the EPA limit 1000 µg/L
 90/93 SYR4 2012–2019
Bromodichloromethane
10.5 µg/L
No EPA limit set
 28/28 SYR4 2012–2019
Chloroform
51.9 µg/L
No EPA limit set
 28/28 SYR4 2012–2019
Fluoride
810 µg/L 20%
of the EPA limit 4000 µg/L
 26/26 SYR4 2012–2019
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 26/26 LCR 2025
Dichloroacetic Acid
21.7 µg/L
No EPA limit set
 24/24 SYR4 2018–2019
Trichloroacetic Acid
10.2 µg/L
No EPA limit set
 24/24 SYR4 2018–2019
Barium
84 µg/L 4.2%
of the EPA limit 2000 µg/L
 16/16 SYR4 2012–2019
Dibromochloromethane
4.45 µg/L
No EPA limit set
 16/28 SYR4 2012–2019
Nitrate
100 µg/L 1%
of the EPA limit 10000 µg/L
 8/32 SYR4 2012–2019
Monochloroacetic Acid
2.1 µg/L
No EPA limit set
 6/24 SYR4 2018–2019
Selenium
3 µg/L 6%
of the EPA limit 50 µg/L
 6/16 SYR4 2012–2019
Nitrate-Nitrite
100 µg/L 1%
of the EPA limit 10000 µg/L
 4/13 SYR4 2012–2019
Lithium
25.7 µg/L
No EPA limit set
 4/8 UCMR-5 2024
2,4-D
0.2200 µg/L 0.3%
of the EPA limit 70 µg/L
 1/20 SYR4 2013–2019
Antimony, Total
1.4 µg/L 23%
of the EPA limit 6 µg/L
 1/16 SYR4 2012–2019
Benzo(A)Pyrene
0.0320 µg/L 16%
of the EPA limit 0.2000 µg/L
 1/19 SYR4 2013–2019
Bromoform
0.9700 µg/L
No EPA limit set
 1/28 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
4.7 µg/L 78%
of the EPA limit 6 µg/L
 1/19 SYR4 2013–2019
Monobromoacetic Acid
1.4 µg/L
No EPA limit set
 1/24 SYR4 2018–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaArsenicAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JACKSON, MICHAELA
Phone
970-350-9836
Email
michaela.jackson@greeleygov.com

Frequently asked questions about Greeley City of

Is Greeley City of tap water safe to drink?

EPA monitoring detected 22 contaminants in Greeley City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Greeley City of's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Chlorite, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Greeley City of serve?

Greeley City of reports serving 132,310 people in Colorado, per its EPA record.

Has Greeley City of had any water quality violations?

The EPA has 50 violations on file for Greeley City of, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.