Annual Drinking Water Quality Report
Village of Lake Odessa
June/2006
We're pleased to present to you this
year's Annual Quality Water Report. This report is designed to
inform you about the quality water and services we deliver to you
every day. Our constant goal is to provide you with a safe and
dependable supply of drinking water. We want you to understand the
efforts we make to continually improve the water treatment process
and protect our water resources. We are committed to ensuring the
quality of your water. The source of our water comes from wells that
draw water from the Tupper Creek Aquifer.
I'm pleased to
report that our drinking water is safe and meets or exceeds federal
and state requirements.
If you have any
questions about this report or concerning your water utility, please
contact Tom Pollock at 616 374-7228.
We want our valued customers to be informed about their
water utility. If you want to learn more, please attend any of our
regularly scheduled meetings. They are held on the Third Monday of
each month at the Page Memorial Building 839 Fourth Avenue Lake
Odessa MI.
The Village of
Lake Odessa routinely monitors for contaminants in your drinking
water according to Federal and State laws. This table shows the
results of our monitoring for the period of January 1st
to December 31st, 2006.
As water travels over the
land or underground, it can pick up substances or contaminants such
as microbes, inorganic and organic chemicals, and
radioactive substances. All drinking
water, including bottled drinking water, may be reasonably
expected to contain at least small amounts of some constituents.
It's important to remember that the presence of these constituents
does not necessarily pose a health risk.
In this table
you will find many terms and abbreviations you might not be familiar
with. To help you better understand these terms we've provided the
following definitions:
Not-Detected (ND) -
laboratory analysis indicates that the constituent is not present.
Parts per
million (ppm) or Milligrams per liter (mg/l)
- one part per million corresponds to one minute in two years or a
single penny in $10,000.
Parts per
billion (ppb) or Micrograms per liter
- one part per billion corresponds to one minute in 2,000 years, or
a single penny in $10,000,000.
Picocuries per liter (pCi/L)
- picocuries per liter is a measure of the radioactivity in water.
Action
Level - the
concentration of a contaminant, which, if exceeded, triggers
treatment or other requirements, which a water system must follow.
Maximum
Contaminant Level -
The “Maximum Allowed” (MCL) is 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.
Maximum
Contaminant Level Goal
- The “Goal”(MCLG) is 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
Residual Disinfection Level –
(MRDL): The highest level of a
disinfectant allowed in drinking water. There is convincing evidence
that addition of a disinfectant is necessary for control of
microbial contaminants.
Maximum
Residual Disinfection Level Goal
– (MRDLG): The level of a drinking water disinfectant below which there is no
known or expected risk to health. MRDLGs do not reflect the benefits
of the use of disinfectants to control microbial contaminants.
The Village of Lake Odessa
disinfects its water system using chlorine gas, and the residuals
from this process are monitored daily. The amount of chlorine
present in the water after contact is called FREE CHLORINE RESIDUAL,
this is measured in ppm.
CHLORINE
RESIDUALS
Unit of measure ppm
Highest Running Annual
Average range
MRDL
0.74
0.5 -0.9
4.0
As you can see the village had no violations
of the MRDL.
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. The table
below represents the most current testing information available.
TEST RESULTS
Inorganic
Contaminants
|
Contaminant/ Date
Tested |
Violation
Y/N |
Level
Detected |
Unit of
Measure |
Average
/Range |
MCLG |
MCL |
Likely
Source of Contamination |
|
8. Arsenic
02/2005 |
N
|
3
|
ppb
|
5
|
n/a
|
*10
|
Erosion of
natural deposits; runoff from orchards; runoff from glass and
electronics production wastes |
|
10. Barium
05/2001 |
N
|
130
|
ppb
|
110-130
|
2000
|
2000
|
Discharge of
drilling wastes; discharge from metal refineries; erosion of
natural deposits |
|
16.Fluoride
03/2006 |
N
|
.33 |
ppm |
0.22-0.33 |
4.0 |
4.0 |
Erosion of
natural deposits; water additive which promotes strong teeth;
discharge from fertilizer and aluminum factories |
* These Arsenic
values are effective January 2006. Until then the MCL is 50 ppb and
there is no MCLG.
Unregulated
contaminants are those for which EPA has not established drinking
water standards. Monitoring helps EPA to determine where these
contaminants occur and whether it needs to regulate those
contaminants.
|
Unregulated Contaminants
|
|
Contaminant Date Tested |
Highest level detected |
Range of level detected |
Unit of measure |
|
|
Sodium
03/2006 |
9 |
8-9 |
Mg/l |
|
|
Lead &
Copper Distribution Monitoring Results |
|
Contaminant |
Date Tested |
Number of Sites
Tested |
90th
Percentile |
# of Sites over
Action Level |
Action level/
units of Measurement |
Likely Source of
Contamination |
|
17. Lead |
09/06 |
10 |
3 |
0 |
15 ppb |
Corrosion of
household plumbing systems, erosion of natural deposits |
|
14. Copper |
09/06 |
10 |
.200 |
0 |
1.3 ppb |
Corrosion of
household plumbing systems; erosion of natural deposits;
leaching from wood preservatives |
| |
|
|
|
|
|
|
|
|
|
|
|
What does this
mean?
As you can see
by the table, our system had no violations. We’re proud that your
drinking water meets or exceeds all Federal and State requirements.
We have learned through our monitoring and testing that some
constituents have been detected. The EPA has determined that your
water IS SAFE at these levels.
All sources of
drinking water are subject to potential contamination by substances
that are naturally occurring or man made. These substances can be:
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 storm water 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 can 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 storm water runoff, and
septic systems. All 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 the water poses a health risk. More information about
contaminants and potential health effects can be obtained by calling
the Environmental Protection Agency’s Safe Drinking Water Hotline at
1-800-426-4791.
MCL’s are set
at very stringent levels. To understand the possible health effects
described for many regulated constituents, a person would have to
drink 2 liters of water every day at the MCL level for a lifetime to
have a one-in-a-million chance of having the described health
effect.
Thank you for
allowing us to continue providing your family with clean, quality
water this year. In order to maintain a safe and dependable water
supply we sometimes need to make improvements that will benefit all
of our customers. These improvements are sometimes reflected as rate
structure adjustments. Thank you for understanding.
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 system 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
microbiological contaminants are available from the Safe Drinking
Water Hotline (800-426-4791).
Please call our
office at 616 374-7228 if you have questions or concerns.
We at Village
of Lake Odessa Water Department work around the clock to provide top
quality water to every tap. We ask
that all our customers help us protect our water sources, which are
the heart of our community, our way of life and our children’s
future.
Copies of this
report are available at the Page Memorial Building 839 4th
avenue Lake Odessa MI. 48849
Tom Pollock
Supt. of Public
Works
Village of Lake
Odessa
