Chinle Chapter House

Overview

Map of Chinle Chapter House:

Longitude: -109 33 32.302        Latitude: 36 9 10.62241


Image of Chinle Chapter House:
Non-Radioactive Contaminants:
Manganese (Mn): Above Limit
Radioactive Contaminants:
      Lead210: Above Limit*


Characteristics of water with excess Manganese (Mn):
black to brown color; black staining; bitter metallic taste. Read more from the US EPA.

Possible Effects of Long-Term Exposure to Lead210 Particles:
Increased risk of cancer. Read more from the California EPA's Office of Environmental Health Hazard Assessment (PDF).

About this data: This data was collected by the US Army Corps of Engineers (USACE) and published by the US Environmental Protection Agency (US EPA) between 1994 and 2000. All raw data displayed on this website is in the public domain. An indication of "NA" for a particular contaminant means that contaminant was not tested for. The limits cited come from US EPA Maximum Contaminant Levels (MCLs). For those contaminants which do not have EPA MCLs (as indicated by a star), the preliminary remediation goals of the USACE availble were used instead. Information about health effects is derived from US government websites, to learn more, click the link next to each one. Please Note: Navajo Nation policy is that livestock-use-only wells are not to be used for human drinking water. Additionally, this website does not contain information about other possible contaminants this water source may have, such as E coli and various bacteria.

Raw Data

"MCL" stands for Maximum Contaminant Level, the highest allowable amount of a given contaminant in public drinking
water, as set by the US EPA. For those contaminants which do not have EPA MCLs (as indicated by a star), the preliminary
remediation goals of the US Army Corps of Engineers were used instead.

Download the EPA's dataset which includes this water source (large PDF file)
Stable Metallic Contaminants
Measurements in Micrograms per Liter (µg/L)
Contaminant Amount MCL
Aluminum (Al) 73.1 1,000
Antimony (Sb) 0 6
Arsenic (As) 0 50
Barium (Ba) 954.0 1,000
Beryllium (Be) 0 4
Cadmium (Cd) 0 5
Chromium (Cr) 0 100
Copper (Cu) 14.3 1,300
Iron (Fe) 242.0 300
Lead (Pb) 0 15
Manganese (Mn) 307.0 50
Mercury (Hg) 0.180 2
Nickel (Ni) 0 730*
Selenium (Se) 0 50
Silver (Ag) 0.7 100
Thallium (Th) 0 2
Vanadium (V) 0 260*
Zinc (Zn) 28.7 5,000
Radioactive Metallic Contaminants
Measurements in Pico-curies per Liter (pCi/L)
Contaminant Amount MCL
Alpha Particles 0.13 15
Beta Particles 2.77 50
Lead210 0.39 0.047*
Radium226 0.226 5
Radium228 0.228 5
Thorium228 0.038 0.21*
Thorium230 0 1.3*
Thorium232 -0.001 1.5*
Uranium234 0.04 20
Uranium235 -0.021 20
Uranium238 0.06 20
About this data: This data was collected by the US Army Corps of Engineers (USACE) and published by the US Environmental Protection Agency (US EPA) between 1994 and 2000. All raw data displayed on this website is in the public domain. The limits cited come from US EPA Maximum Contaminant Levels (MCLs). For those contaminants which did not have EPA MCLs (as indicated by a star), the preliminary remediation goals of the USACE availble were used instead. Information about health effects is derived from US government websites, to learn more, click the link next to each one. Please Note: Navajo Nation policy is that livestock-use-only wells are not to be used for human drinking water. Additionally, this website does not contain information about other possible contaminants this water source may have, such as E coli and various bacteria.

2 comments about this water source so far:

  1. Thenisharae White says:

    I don’t see why we’re not do something about this. In my opinion this is really bad. Lead210 is pretty much radioactive, and it puts people at high risk of getting cancer.

    • W Durfey says:

      Since the EPA levels are a “maximum,” it is probably criminal to be distributing water to people without removing the constituents that are over the limit.

      Perhaps the EPA will fine them eventually, to motivate them to start filtering out the bad stuff. Or it opens the door for a good class action law suit against the water company.

      Meanwhile, Brita filters claim to remove all heavy metals, which includes lead. Another brand claims to remove ALL radioactive contaminants; don’t remember the name but it costs around $100. Don’t forget to change filter cartridges as frequently as they recommend.

      I don’t know if manganese is a heavy metal – if so, the filters will get that out as well.

      Or they sell RO water at Bashas. Just put some unprocessed salt into the water to replace the mineral content; that will keep minerals from leaching out of the body. It will also help prevent the water from absorbing lots of CO2 and becoming acidic, which also isn’t good for you.

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