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EWG's Tap Water Database

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Mexican Hat Special Service District

 

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Utah Department of Environmental Quality, 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.

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3

contaminants detected above health guidelines

4

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.

  • Arsenic

    cancer

    Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    0.004 ppb
    1.29 ppb
    3.67 ppb
    2.20 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 arsenic in excess of health guideline

    The health guideline of 0.004 ppb for arsenic 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

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 2.20 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
    2.20 ppb Yes No

  • Nitrate

    cancer

    Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    0.14 ppm
    1.01 ppm
    0.949 ppm
    0.300 ppm
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppm = parts per million.

    Health risks of nitrate in excess of health guideline

    The health guideline of 0.14 ppm for nitrate was defined in a peer-reviewed scientific study by EWG and corresponds to one-in-one-million annual cancer risk level.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 0.300 ppm
    • 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
    0.300 ppm Yes No

  • Nitrate and nitrite

    cancer

    Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    5 ppm
    0.764 ppm
    0.959 ppm
    0.300 ppm
    The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
    ppm = parts per million.

    Health risks of nitrate and nitrite in excess of health guideline

    The health guideline of 5 ppm for nitrate and nitrite was defined by EWG based on studies by scientists at the National Cancer Institute and other independent researchers. This health guideline protects against cancer and harm to fetal growth and development.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 0.300 ppm
    • 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
    0.300 ppm 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 authori.

  • 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
    68.0 ppb
    86.4 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 EWG as benchmark that protects against harm to the kidneys and the cardiovascular system. 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

  • Cyanide


    Cyanide is a toxic chemical that causes central nervous system and thyroid toxicity. Water contamination is generally the result of metal mining and chemical industry waste, runoff from agriculture and road salts used for melting ice.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    2.28 ppb
    1.31 ppb
    2.00 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: 2.00 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
    2.00 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

    0.437 ppm
    0.294 ppm
    0.400 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: 0.400 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
    0.400 ppm No No

  • Selenium


    Selenium is an essential element in diets. But too much selenium can decrease thyroid hormone production and cause hair loss, skin lesions and brittle fingernails.

    STATE

    NATIONAL

    THIS UTILITY

    How your levels compare

    HEALTH GUIDELINE:
    30 ppb
    0.691 ppb
    1.56 ppb
    8.80 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 selenium in excess of health guideline

    The health guideline of 30 ppb for selenium 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 hair loss and nail damage.

    Testing summary by quarter

    NOT TESTED

    NOT DETECTED

    DETECTED

    ABOVE HEALTH GUIDELINE

    ABOVE LEGAL LIMIT

    • Utility Average 2015: 8.80 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
    8.80 ppb No No

Want to filter these contaminants out?

Pollution sources

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

agriculture icon

Agriculture

teardrop 4
industry icon

Industry

teardrop 4
water treatment icon

Treatment
byproducts

tear drop 1
urban area icon

Runoff &
sprawl

teardrop 3
naturally occuring icon

Naturally
occuring

teardrop 6

  • Arsenic
  • Cyanide
  • Nitrate and nitrite
  • Nitrate
  • Arsenic
  • Barium
  • Cyanide
  • Selenium
  • Arsenic
  • Barium
  • Cyanide
  • Nitrate and nitrite
  • Nitrate
  • Selenium
  • Cyanide
  • Nitrate and nitrite
  • Nitrate
  • Fluoride
Specific water contaminants can come from more than one source.

Mexican Hat Special Service District compliance with legally mandated federal standards

  • From October 2015 to September 2018, Mexican Hat Special Service District complied with health-based drinking water standards.
  • 8 QUARTERS
    in violation of any federal drinking water standard from October 2015 to September 2018
Information in this section on Mexican Hat Special Service District 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:

Dichloroacetic acid, Trichloroacetic acid, Haloacetic acids (HAA5), Chloroform, Bromoform, Bromodichloromethane, Dibromochloromethane, Total trihalomethanes (TTHMs)

 

Chemicals tested for but not detected from 2010 to 2015:

Antimony, Beryllium, Cadmium, Chromium (total), Dibromoacetic acid, Mercury (inorganic), Monobromoacetic acid, Monochloroacetic acid, Nitrite, Thallium