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EWG's Tap Water Database

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City of Greeley

 

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Colorado Department of Public Health & Environment, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the EPA (July 2018 - September 2018), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

This water utility has its own treatment plant or water supply, and also buys or otherwise receives some of its finished water from one or more public water utility systems to provide water for a part of its service area and customers. The list below includes the names of the supplemental water suppliers, with links to their water quality testing data.
- North Weld County WD

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2

contaminants detected above health guidelines

9

other detected contaminants

    Includes chemicals detected in 2015 for which annual utility averages exceeded an EWG-selected health guideline established by a federal or state public health authority.

  • Chlorite

    change in blood chemistry

    Chlorite is a disinfection byproduct resulting from water treatment with chlorine dioxide. Chlorite decreases hemoglobin levels and causes other hematologic effects.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    50 ppb
    267.4 ppb
    296.4 ppb
    180.8 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppb = parts per billion.

    Health risks of chlorite in excess of health guideline

    The health guideline of 50 ppb for chlorite was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against change in blood chemistry.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 180.8 ppb
    • Health Guideline Exceeded 2015: Yes
    • Legal Limit Exceeded 2015: No
    Utility
    Average
    2015
    Health
    Guideline
    Exceeded
    2015
    Legal
    Limit
    Exceeded
    2015
    2010 2011 2012 2013 2014 2015
    180.8 ppb Yes No

  • Total trihalomethanes (TTHMs)

    cancer

    Trihalomethanes are cancer-causing contaminants that form during water treatment with chlorine and other disinfectants. The total trihalomethanes group includes four chemicals: chloroform, bromodichloromethane, dibromochloromethane and bromoform.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    0.8 ppb
    23.7 ppb
    24.2 ppb
    49.0 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppb = parts per billion.

    Health risks of trihalomethanes in excess of health guideline

    The health guideline of 0.8 ppb for trihalomethanes was defined by the California Office of Environmental Health Hazard Assessment as a draft public health goal, the level of drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 49.0 ppb
    • Health Guideline Exceeded 2015: Yes
    • Legal Limit Exceeded 2015: No
    Utility
    Average
    2015
    Health
    Guideline
    Exceeded
    2015
    Legal
    Limit
    Exceeded
    2015
    2010 2011 2012 2013 2014 2015
    49.0 ppb Yes No

    Includes chemicals detected in 2015 for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authority; chemicals detected under the EPA's Unregulated Contaminant Monitoring Rule (UCMR 3) program in 2013 to 2015, for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authority.

  • 2,4-D


    2,4-D (2,4-dichlorophenoxyacetic acid) is a herbicide that can be applied directly to GMO corn and soy plants engineered to withstand this toxic chemical. Americans' exposures to 2,4-D from food and drinking water will likely increase in years to come as farmers plant more of these GMO crops.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    20 ppb
    0.000737 ppb
    0.000322 ppb
    0.0550 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppb = parts per billion.

    Health risks of 2,4-D in excess of health guideline

    The health guideline of 20 ppb for 2,4-D was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 0.0550 ppb
    • Health Guideline Exceeded 2015: No
    • Legal Limit Exceeded 2015: No
    Utility
    Average
    2015
    Health
    Guideline
    Exceeded
    2015
    Legal
    Limit
    Exceeded
    2015
    2010 2011 2012 2013 2014 2015
    0.0550 ppb No No

  • Barium


    Barium is a mineral present in rocks, soil and water. High concentrations of barium in drinking water increase the risk of cardiovascular disease and hypertension.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    700 ppb
    68.2 ppb
    66.4 ppb
    32.0 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppb = parts per billion.

    Health risks of barium in excess of health guideline

    The health guideline of 700 ppb for barium was defined by the Environmental Protection Agency as a children's health-based limit for 10-day exposure, a non-enforceable federal health advisory. This health guideline protects against harm to internal organs.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 32.0 ppb
    • Health Guideline Exceeded 2015: No
    • Legal Limit Exceeded 2015: No
    Utility
    Average
    2015
    Health
    Guideline
    Exceeded
    2015
    Legal
    Limit
    Exceeded
    2015
    2010 2011 2012 2013 2014 2015
    32.0 ppb No No

  • Chlorate


    Chlorate forms in drinking water as a byproduct of disinfection. Chlorate impairs thyroid function, making chlorate exposure most harmful during pregnancy and childhood.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    210 ppb
    114.0 ppb
    104.4 ppb
    48.7 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
    ppb = parts per billion.

    Health risks of chlorate in excess of health guideline

    The health guideline of 210 ppb for chlorate was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against hormone disruption.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    • Utility Average 2010-2015: 48.7 ppb
    • Health Guideline Exceeded 2010-2015: No
    • Legal Limit Exceeded 2010-2015: No
    Utility
    Average
    2010-2015
    Health
    Guideline
    Exceeded
    2010-2015
    Legal
    Limit
    Exceeded
    2010-2015
    2010 2011 2012 2013 2014 2015
    48.7 ppb No No

  • Chromium (hexavalent)


    Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    0.02 ppb
    0.782 ppb
    0.0832 ppb
    0.0179 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
    ppb = parts per billion.

    Health risks of chromium (hexavalent) in excess of health guideline

    The health guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    • Utility Average 2010-2015: 0.0179 ppb
    • Health Guideline Exceeded 2010-2015: No
    • Legal Limit Exceeded 2010-2015: No
    Utility
    Average
    2010-2015
    Health
    Guideline
    Exceeded
    2010-2015
    Legal
    Limit
    Exceeded
    2010-2015
    2010 2011 2012 2013 2014 2015
    0.0179 ppb No No

  • Fluoride


    Fluoride occurs naturally in surface and groundwater and is also added to drinking water by many water systems.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    0.440 ppm
    0.671 ppm
    0.665 ppm
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppm = parts per million.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 0.665 ppm
    • Health Guideline Exceeded 2015: No
    • Legal Limit Exceeded 2015: No
    Utility
    Average
    2015
    Health
    Guideline
    Exceeded
    2015
    Legal
    Limit
    Exceeded
    2015
    2010 2011 2012 2013 2014 2015
    0.665 ppm No No

  • Haloacetic acids (HAA5)


    Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of five haloacetic acids regulated by federal standards includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    12.9 ppb
    13.3 ppb
    21.8 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppb = parts per billion.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 21.8 ppb
    • Health Guideline Exceeded 2015: No
    • Legal Limit Exceeded 2015: No
    Utility
    Average
    2015
    Health
    Guideline
    Exceeded
    2015
    Legal
    Limit
    Exceeded
    2015
    2010 2011 2012 2013 2014 2015
    21.8 ppb No No

  • Molybdenum


    Molybdenum is a metal that occurs naturally in soil, minerals and water. People who ingest large amounts can have increased levels of uric acid and gout-like symptoms.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    40 ppb
    1.61 ppb
    1.52 ppb
    0.650 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
    ppb = parts per billion.

    Health risks of molybdenum in excess of health guideline

    The health guideline of 40 ppb for molybdenum was defined by the Environmental Protection Agency as a lifetime health-based limit for effects other than cancer. This health guideline protects against an increased risk of gout.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    • Utility Average 2010-2015: 0.650 ppb
    • Health Guideline Exceeded 2010-2015: No
    • Legal Limit Exceeded 2010-2015: No
    Utility
    Average
    2010-2015
    Health
    Guideline
    Exceeded
    2010-2015
    Legal
    Limit
    Exceeded
    2010-2015
    2010 2011 2012 2013 2014 2015
    0.650 ppb No No

  • Strontium


    Strontium is a metal that accumulates in the bones. Radioactive strontium-90 can cause bone cancer and leukemia, and any form of strontium at high doses can harm bone health.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    1,500 ppb
    357.2 ppb
    231.9 ppb
    235.0 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
    ppb = parts per billion.

    Health risks of strontium in excess of health guideline

    The health guideline of 1,500 ppb for strontium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against harm to bones.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    • Utility Average 2010-2015: 235.0 ppb
    • Health Guideline Exceeded 2010-2015: No
    • Legal Limit Exceeded 2010-2015: No
    Utility
    Average
    2010-2015
    Health
    Guideline
    Exceeded
    2010-2015
    Legal
    Limit
    Exceeded
    2010-2015
    2010 2011 2012 2013 2014 2015
    235.0 ppb No No

  • Vanadium


    Vanadium is a metal used in steels and other alloys. People are commonly exposed to vanadium in water and food. Excessive exposure can be toxic during pregnancy and childhood.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    21 ppb
    1.98 ppb
    0.465 ppb
    0.314 ppb
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
    ppb = parts per billion.

    Health risks of vanadium in excess of health guideline

    The health guideline of 21 ppb for vanadium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against change in blood chemistry.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    • Utility Average 2010-2015: 0.314 ppb
    • Health Guideline Exceeded 2010-2015: No
    • Legal Limit Exceeded 2010-2015: No
    Utility
    Average
    2010-2015
    Health
    Guideline
    Exceeded
    2010-2015
    Legal
    Limit
    Exceeded
    2010-2015
    2010 2011 2012 2013 2014 2015
    0.314 ppb No No

Want to filter these contaminants out?

Pollution sources

Click on each pollution source to see from which source contaminants come.

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Agriculture

teardrop 2
industry icon

Industry

teardrop 7
water treatment icon

Treatment
byproducts

tear drop 5
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Runoff &
sprawl

teardrop 1
naturally occuring icon

Naturally
occuring

teardrop 5

  • Chlorate
  • 2,4-D
  • Chlorate
  • Chlorite
  • Barium
  • Strontium
  • Chromium (hexavalent)
  • Molybdenum
  • Vanadium
  • Barium
  • Strontium
  • Chromium (hexavalent)
  • Molybdenum
  • Vanadium
  • 2,4-D
  • Chlorate
  • Chlorite
  • Fluoride
  • Haloacetic acids (HAA5)
  • Total trihalomethanes (TTHMs)
Specific water contaminants can come from more than one source.

City of Greeley compliance with legally mandated federal standards

  • From October 2015 to September 2018, City of Greeley complied with health-based drinking water standards.
Information in this section on City of Greeley comes from the U.S. EPA Enforcement and Compliance History Online database. Click here for more information for this utility.

Other contaminants tested


Contaminants detected between 2010 and 2014 and were not part of EPA's UCMR-3 testing program:

Selenium, Chloroform, Bromoform, Bromodichloromethane, Dibromochloromethane

 

Chemicals tested for but not detected from 2010 to 2015:

1,1,1,2-Tetrachloroethane, 1,1,1-Trichloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethane, 1,1-Dichloroethylene, 1,1-Dichloropropene, 1,2,3-Trichlorobenzene, 1,2,3-Trichloropropane, 1,2,4-Trichlorobenzene, 1,2,4-Trimethylbenzene, 1,2-Dibromo-3-chloropropane (DBCP), 1,2-Dichloroethane, 1,2-Dichloropropane, 1,3,5-Trimethylbenzene, 1,3-Butadiene, 1,3-Dichloropropane, 1,3-Dichloropropene, 1,4-Dioxane, 17-beta-Estradiol, 2,2-Dichloropropane, 2,3,7,8-TCDD (Dioxin), 2,4,5-TP (Silvex), 3-Hydroxycarbofuran, 4-Androstene-3,17-dione, Alachlor (Lasso), Aldicarb, Aldicarb sulfone, Aldicarb sulfoxide, Aldrin, Antimony, Arsenic, Atrazine, Benzene, Benzo[a]pyrene, Beryllium, Bromobenzene, Bromochloromethane, Bromomethane, Butachlor, Cadmium, Carbaryl, Carbofuran, Carbon tetrachloride, Chlordane, Chlorodifluoromethane, Chloroethane, Chloromethane, Chromium (total), cis-1,2-Dichloroethylene, Cobalt, Combined uranium, Dalapon, Di(2-ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Dibromomethane, Dicamba, Dichlorodifluoromethane, Dichloromethane (methylene chloride), Dieldrin, Dinoseb, Diquat, Endothall, Endrin, Equilin, Estriol, Estrone, Ethinyl estradiol, Ethylbenzene, Ethylene dibromide, Heptachlor, Heptachlor epoxide, Hexachlorobenzene (HCB), Hexachlorobutadiene, Hexachlorocyclopentadiene, Isopropylbenzene, Lindane, m-Dichlorobenzene, Mercury (inorganic), Methomyl, Methoxychlor, Metolachlor, Metribuzin, Monochlorobenzene (chlorobenzene), n-Butylbenzene, n-Propylbenzene, Naphthalene, Nitrate, Nitrate & nitrite, Nitrite, o-Chlorotoluene, o-Dichlorobenzene, Oxamyl (Vydate), p-Chlorotoluene, p-Dichlorobenzene, p-Isopropyltoluene, Pentachlorophenol, Perfluorobutane sulfonate (PFBS), Perfluoroheptanoic acid (PFHPA), Perfluorohexane sulfonate (PFHXS), Perfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA), Picloram, Polychlorinated biphenyls (PCBs), Propachlor, Radium, combined (-226 & -228), Radium-226, Radium-228, sec-Butylbenzene, Simazine, Styrene, tert-Butylbenzene, Testosterone, Tetrachloroethylene (perchloroethylene), Thallium, Toluene, Toxaphene, trans-1,2-Dichloroethylene, Trichloroethylene, Trichlorofluoromethane, Vinyl chloride, Xylenes (total)