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2007 Water Quality Report for
CITY OF CRYSTAL FALLS
This report covers the drinking water quality for the City of
Crystal Falls, for the calendar year 2007. Included are details about where your
water comes from, what it contains, and how it compares to Environmental
Protection Agency (EPA) and state standards.
In 2007 we transitioned, for water quality purposes, to
purchasing water from Crystal Falls Township. An additional well, with our help,
was drilled at their Lind site for added capacity.
We no longer need to treat the water for iron removal. Our
well #1 has been retained as a standby well.
For more information, contact the clerk’s office at 401
Superior Avenue, Crystal Falls, MI 49920. Call 906-875-3212.
Contaminants and their presence in water: Drinking
Water, including bottled water, may reasonably be expected to contain at least
small amounts of some contaminants. The presence of contaminants does not
necessarily indicate that water poses a health risk. More information about
contaminants and potential health effects can be obtained by calling the EPA’s
Safe Drinking Water Hotline (800-426-4791).
Vulnerability of sub-populations: Some people may be
more vulnerable to contaminants in drinking water than the general population.
Immuno-compromised persons such as persons with cancer undergoing
chemotherapy, persons who have undergone organ transplants, people with
HIV/AIDS or other immune systems disorders, some elderly, and infants can be
particularly at risk from infections. These people should seek advice about
drinking water from their health care providers. EPA/CDC guidelines on
appropriate means to lessen the risk of infection by Cryptosporidium and other
microbial contaminants are available from the Safe Drinking Water Hotline
(800-426-4791).
Sources of drinking water: The sources of drinking
water (both tap water and bottled water) include rivers, lakes, streams,
ponds, reservoirs, springs, and wells. Our water comes from wells. As water
travels over the surface of the land or through the ground, it dissolves
naturally-occurring minerals and, in some cases, radioactive material, and can
pick up substances resulting from the presence of animals or from human
activity.
Contaminants that may be present in source water include:
Microbial contaminants, such as viruses and
bacteria, which may come from sewage treatment plants, septic systems,
agricultural livestock operations and wildlife.
Inorganic contaminants, such as salts and
metals, which can be naturally-occurring or result from urban stormwater
runoff, industrial or domestic wastewater discharges, oil and gas
production, mining or farming.
Pesticides and herbicides, which may come from
a variety of sources such as agriculture and residential uses.
Radioactive contaminants, which are naturally
occurring or be the result of oil and gas production and mining activities.
Organic chemical contaminants, including
synthetic and volatile organic chemicals, which are by-products of
industrial processes and petroleum production, and can also come from gas
stations, urban stormwater runoff, and septic systems.
In order to ensure that tap water is safe to drink, EPA
prescribes regulations that limit the amount of certain contaminants in water
provided by public water systems. Food and Drug Administration regulations
establish limits for contaminants in bottled water which provide the same
protection for public health.
Water Quality Data
The table below lists all the drinking water contaminants that we detected
during the 2007 calendar year. The presence of these contaminants in the water
does not necessarily indicate that the water poses a health risk. Unless
otherwise noted, the data presented in this table is from testing done January 1
– December 31, 2007. The State allows us to monitor for certain contaminants
less than once per year because the concentrations of these contaminants are not
expected to vary significantly from year to year. All of the data is
representative of the water quality, but some are more than one year old.
Terms and abbreviations used below:
Maximum Contaminant Level Goal (MCLG): The level of a contaminant in
drinking water below which there is no known or expected risk to health. MCLGs
allow for a margin of safety.
Maximum Contaminant Level (MCL): The highest level of a contaminant that
is allowed in drinking water. MCLs are set as close to the MCLGs as feasible
using the best available treatment technology.
N/A: Not applicable ND: not detectable at testing limit ppb:
parts per billion or micrograms per liter ppm: parts per million or
milligrams per liter pCi/l: picocuries per liter (a measure of
radioactivity).
Action Level: The concentration of a contaminant which, if exceeded,
triggers treatment or other requirements that a water system must follow.
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Regulated
Contaminant |
MCL |
MCLG |
Level Detected |
Sampled |
Violation
Yes / No |
Typical Source of Contaminant |
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Fluoride (ppm) |
4 |
4 |
ND |
8/07 |
No |
Erosion of natural deposits |
|
Barium (ppb) |
2000 |
2000 |
10 |
4/03 |
No |
Erosion of natural deposits |
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Unregulated Contaminant* |
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Sodium (ppm) |
ND |
8/07 |
No |
Erosion of natural deposits. |
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Contaminant Subject to AL |
Action Level |
90% of Samples
< This Level |
Sampled |
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Lead (ppb) |
15 |
4 |
9/06 |
No |
Distribution piping and fixtures. |
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Copper (ppb) |
1300 |
812 |
9/06 |
No |
Distribution piping and fixtures. |
* Unregulated contaminants are those for which EPA has not established
drinking water standards.
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Mircobial Contaminants |
MCL |
|
Number of Detections |
Violation |
Source |
|
Total Coliform Bacteria |
1 positive monthly sample (Positive in > 5% of
samples) |
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1* |
No |
Naturally present in the environment. |
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*We had one routine sample from the water system come back as positive for
coliform bacteria in November. We collected the required three repeat samples
– they were all negative for coliform. The extra samples in December were also
negative for coliform.
For more information, contact the clerk’s office at 401
Superior Avenue, Crystal Falls, MI 49920. Call 906-875-3212.
For more information about safe drinking water, visit the
U.S. Environmental Protection Agency at www.epa.gov/safewater/.
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