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Water Quality Report
2010
General Facts about Niles Water
Source Water Assessment
Unregulated Contaminants
Wellhead Protection Program
Contaminants Found in Untreated Water
Distribution System
Infrastructure Improvements
Water Quality Data
General Facts about Niles
Water
It is our goal to provide you with the best
drinking water possible. Our test results show that we have achieved
our goal. We have met the State of
Michigan
requirements. The information found in this report is representative
of our source water, which is ground water. Within our water system
there are eight wells available to provide water to the City, an Iron
Filtration Plant, a Booster Pumping Station and five Elevated Storage
Tanks. Your drinking water comes from the St. Joseph River
Glacial Outwash Aquifer System.
If present, elevated levels of lead can cause
serious health problems, especially for pregnant women and young
children. Lead in drinking water is primarily from materials and
components associated with service lines and home plumbing. The
City of
Niles
is responsible for providing high quality drinking water, but cannot
control the variety of materials used in plumbing components.
When your water has been sitting for several hours, you can minimize
the potential for lead exposure by flushing your tap for 30 seconds to
2 minutes before using water for drinking or cooking. If you are
concerned about lead in your water, you may wish to have your water
tested. Information on lead in drinking water, testing methods,
and steps you can take to minimize exposure is available from the Safe
Drinking Water Hotline at 1-800-426-4791 or at http://water.epa.gov/drink/info/lead.
Source Water Assessment
In 2003, the State of
Michigan
completed a Source Water Assessment. Ground water susceptibility is
determined in large part by the number and type of contamination
sources within the Wellhead Protection Area (WHPA), with additional
consideration to aspects of well construction and the chemical
monitoring history of individual production wells. Information from
the WHPA delineation for the eight production wells indicates the
aquifer from which the City obtains groundwater is characterized as
“leaky-confined”. Leaky-confined aquifers possess a
“moderate” geologic sensitivity.
The Contaminant Source Inventory, current as of
October 2007, indicates several existing and potential sources of
contamination. Leaking Underground Storage Tank (LUST) sites include
the Niles Community School Bus Storage and Repair,
1740 Lake Street
; Dale’s Mini Mart,
2323 North 5th Street
; Niles Chemical Paint,
225 Fort Street
; Niles Pro Quick Mart,
801 North 13th Street
. There are six sites of environmental contamination (EPA Part 201)
that include Pri Mar Petroleum, 1429 Lake Street; Henco Enterprises,
2241 Lake Street; Amerson Bowman, 782 Fort Street; Berman’s,
North 5th Street; US Aviex, 1056 Huntly Road and Birch Crest Estates,
2330 East Main Street
.
Potential sources of contamination include
Underground Storage Tank (UST) sites; small and large quantity
hazardous waste generators; a former City dump that is adjacent to the
golf course; Michigan Baseline Environmental Assessment sites;
groundwater discharge permit sites; former gas stations; agriculture
sites; and other industrial and agriculture sites.
The City of
Niles' eight production wells possess a “moderately high”
susceptibility based on the above-mentioned geologic sensitivity
analysis, listed potential contamination sources within the WHPA, and
the following:
- No
Maximum Contaminant Level (MCL) violations have occurred.
- The
well construction meets standards.
- There
are no potential contamination sources within the standard
isolation zone.
- Our
community has an active WHPA that supports management of existing
or potential sources of contamination.
- Known
sources of contamination within the WHPA are being remediated to
prevent movement of contamination to municipal wells.
We have conducted a sampling of unregulated
contaminants. The U.S. EPA has revised the federal regulations
affecting the monitoring of unregulated contaminants within public
water systems. The purpose of monitoring unregulated contaminants is
to provide data to support the EPA Administrator’s decisions
concerning whether or not to regulate these contaminants in the future
for the protection of public health. This basically lets the EPA know
what is in drinking water and to what levels they appear.
With the completion of our Water Filtration Plant
we are able to eliminate low levels of contaminants from the water.
The results of this unregulated contaminant monitoring are available
at the City of
Niles
,
Utilities
Department
Service
Center
,
1265 S. 15th Street
. They are available through Johnnie Hall, Water Superintendent at
this location. Please call 269-684-3901, extension 302, for details.
Because we care about the quality of water we
provide, we are taking precautionary measures to ensure that our
source water does not become vulnerable to contamination. We have
begun what is known as a Wellhead Protection Program. We have defined
a recharge area that shows us where our water comes from, for up to 10
years. We have finalized plans to establish goals that will protect
our wellhead recharge area. Through our Wellhead Protection Program we
have worked with
Niles
High School
students to design Wellhead Protection signs that have been placed on
the main thoroughfares leading into town. With these signs, we hope to
raise public awareness by warning motorists of the fact that when they
are entering the City of
Niles
, they are above the groundwater capture area, and that accidental
spills of dangerous chemicals being transported over our highways, if
left unattended, could contaminate our drinking water.
We will proceed with drafting ordinances and
zoning changes, and will be working to gain the support of neighboring
communities to safeguard our water source with these changes. For
further information please contact Johnnie Hall, Water Superintendent,
at 269-684-3901, extension 302.
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 the water poses a health
risk. More information about contaminants and potential health affects
can be obtained by calling the Environmental Protection Agency’s
Safe Drinking Water Hotline (800-426-4791).
The
sources of drinking water (both tap water and bottled) include rivers,
lakes, streams, ponds, reservoirs, springs, and 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 might be expected to be in source water (untreated 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, urban stormwater runoff, and residential uses.
-
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.
-
Radioactive
contaminants, which can be naturally-occurring or be the result of
oil and gas production and mining activities.
In order to ensure that the tap water is safe to
drink, EPA prescribes regulations which limit the amount of certain
contaminants in water provided by public water systems. EPA
regulations establish limits for contamination in bottled water which
must provide the same protection for public health.
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 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 the
appropriate means to lessen the risk of infection by Cryptosporidium
and microbial contaminants are available from the Safe Drinking Water
Hotline (800-426-4791) or visiting their website at http://www.epa.gov/safewater.
We have tested for over 200 parameters regulated
by the EPA and the State of
Michigan
. Included in these tests were metals, volatile organics,
pesticides, herbicides, synthetic organic carbons and cyanide. Due to
groundwater contamination contained in the upper aquifer, we are
monitoring three wells on a quarterly basis to further safeguard our
water supply.
Our sole source of drinking water is ground water
wells. We treat water differently in our water system. In the two east
zones, we add chlorine to prevent the growth of harmful water-borne
bacteria, we add phosphate to sequester the iron that accumulates in
the distribution system, and we add fluoride to help reduce dental
cavities in children. In the west zone we only add fluoride.
Every year we conduct cross connection
inspections on commercial and industrial businesses to safeguard our
water supply. It is important to observe how our water is used by our
customers and to prevent backflow from back-siphonage and back
pressure.
The City of Niles Water Division is operated by
the City of Niles Utilities Department, a community-owned utility. The
City of
Niles
provides water, wastewater and electric service to the greater
Niles
area,
Niles
Township
and
Howard
Township
. Our main office is located at 322 East
Main
. Our mailing address is
P.O. Box
217
. Our fax number is 269-684-3907. Visit our web site at
www.ci.niles.mi.us. J.W. Rossow is the Utilities Manager,
269-683-4700, ext. 216 and Johnnie Hall is the Water Superintendent,
269-684-3901, extension 302. You may address any utility concern at
our Utilities Board Meeting, which is open to the public. The meeting
is held every third Monday of the month, at 3:15 PM, in the City Hall
Conference Room at 508 E. Main Street, Niles.
A significant portion of the City of
Niles
water distribution system was installed more than 50 years ago. This,
along with the fact that raw water, pumped from the below ground
aquifers and into the distribution system, is high in iron content has
created water quality problems for our customers.
After completing a water reliability study, the
City embarked upon a water system infrastructure improvement program.
This completed program addresses problems across the total water
system, including
Niles
, Howard and
Bertrand
Townships
, and within the City limits.
Included in these capital improvements have been
an Iron Filtration Plant, the establishment of an intermediate water
pressure district on the east side of town which included an Elevated
Storage Tank and a Booster Pump Station, and the addition of an
Elevated Storage Tank on the west side of town.
We are happy to report that we are able to remove
99.95% of the natural iron from the raw water supply to the new plant.
We have raised the water pressure within the intermediate pressure
district, on the far eastside by 30 psi, and we have added additional
fire protection to the west side that will sustain necessary fire
flows by today’s standards.
The table below lists the regulated and unregulated contaminants detected in Niles' drinking water during
2010 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,
2010. 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.
|
Regulated at the Point of Entry (Well) |
|
Regulated Contaminant |
MCL |
MCLG |
LEVEL DETECTED |
Range of Detection |
SAMPLE DATE |
VIOLATION YES/NO |
Source of Contamination |
|
Arsenic (ppb) |
10* |
0* |
0.003 |
0-.003 |
8/04/2009 |
NO |
Erosion
of natural deposits; Runoff from orchards; Runoff from glass and
electronics production waste |
|
Selenium (ppb) |
50 |
50 |
0.003 |
0-.003 |
8/04/2009 |
NO |
Discharge from petroleum and metal refineries; erosion of
natural deposits; discharge from mines |
|
Barium (ppm) |
2 |
2 |
0.60 |
0.4 -0.6 |
8/04/2009 |
NO |
Erosion
of natural deposits; Discharge of drilling wastes; Discharge of
metal refineries. |
|
Nitrate (ppm) |
10 |
10 |
2.1 |
0-2.1 |
8/03/2010 |
NO |
Erosion
of Natural Deposits; Leaching from septic tanks and sewage;
Runoff from fertilizer |
|
Fluoride (ppm) |
4 |
4 |
1.5 |
.77-1.5 |
8/03/2010 |
NO |
Erosion
of Natural Deposits; Water additive which promotes strong teeth;
Discharge from fertilizer and aluminum factories |
|
Radioactive Contaminant |
MCL |
MCLG |
LEVEL DETECTED |
Range of Detection |
SAMPLE DATE |
VIOLATION YES/NO |
Source of Contamination |
|
Alpha emitters (pci/l) |
15 |
0 |
1.6 |
1.6 + 0.9 |
8/3/2010 |
NO |
Erosion
of natural deposits |
|
Beta emitters (pci/l) |
- |
0 |
1.0 |
3.0 + 1.0 |
08/10/2010 |
NO |
Erosion
of natural deposits |
|
Combined radium (pci/l) |
5 |
0 |
1.8 |
0-1.8 |
12/16/2004 |
NO |
Erosion
of natural deposits |
|
Regulated at Customer's Tap |
|
Special Monitoring and
Unregulated Contaminant** |
|
|
Average Level Detected |
Range of Detection |
Sample Date |
VIOLATION YES/NO |
Source of Contamination |
|
Sodium (ppm) |
|
|
8 |
5-16 |
08/03/2010 |
NO |
Erosion
of natural deposits |
|
Contaminant Subject to All |
Action Level |
90% of Samples < This Level |
Range of Detection |
Sample Date |
Number of Samples Above Al |
Source of Contamination |
|
Copper (ppm) - distribution |
1300 |
0 |
24-220 |
08/20/2008 |
0 |
Corrosion of household plumbing systems. |
|
Lead (ppb) - distribution |
15 |
0 |
<1.0-3.9 |
08/20/2008 |
0 |
Corrosion of household plumbing systems. |
|
Distribution System |
MRDL |
MRDLG |
Highest |
Range of Detection |
Annual Running Average |
Violation (Yes / No) |
Source of Contamination |
|
Free Chlorine (ppm) |
4 |
4 |
0.88 |
0.40-0.88 |
0.680 |
No |
Water
Additive Used To Control Microbes |
|
Total Chlorine (ppm) |
4 |
4 |
.95 |
0.56 -95 |
0.77 |
No |
Water
Additive Used To Control Microbes |
|
Distribution System
Disinfection By-products |
MRDL |
MRDLG |
Running Annual Average |
Range of Detection |
Date |
Violation (Yes / No) |
Source of Contamination |
|
Total Trihalomethanes (TTHM) |
80 |
N/Z |
.016 |
.0005-.016 |
08/03/2010 |
No |
Drinking
Water disinfection by product |
|
Total Haloacetic Acids (five) |
60 |
Per
Indv |
.004 |
0-.002 |
08/03/2010 |
No |
Drinking
Water disinfection by product |
|

DEFINITIONS
|
|
Action Level |
The
concentration of a contaminant which, if exceed, triggers
treatment or other requirements which a water system must
follow.
|
|
(MCL) |
Maximum
Contaminant Level (MCL) is the highest level of a contaminant
that is allowed in drinking water. MCLs are set as close to the
MCLG as feasible using the best available treatment technology.
|
|
(MCLG) |
Maximum
Contaminant Level 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.
|
|
(MRDL) |
Maximum
Residual Disinfectant Level is the highest level of disinfectant
allowed in drinking water. There is convincing evidence that
addition of a disinfectant is necessary for control of microbial
contaminants.
|
|
(MRDLG) |
Maximum
Residual Disinfectant Level Goal - 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.
|
|
ppb |
Parts per
billion or 1 in 1,000,000,000 |
|
ppm |
Parts per
million or 1 1,000,000 |
|
90th Percentile |
90 percent
of the samples were below the number listed. (Copper = .29 ppm;
Lead = 1.00 ppb) |
|
N/A |
Not
applicable |
|
* |
These
arsenic values after January 23, 2006 are 10 parts per billion. |
|
** |
Unregulated
contaminants are those for which EPA has not established
drinking water standards. Monitoring helps EPA to determine
where certain contaminants occur and whether it needs to
regulate those contaminants.
|
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*** |
Infants and
children who drink water containing lead in excess of the action
level could experience delays in their physical or mental
development. Children could show slight deficits in attention
span and learning abilities. Adults who drink this water over
many years could develop kidney problems or high blood pressure.
It is possible that lead levels at your home may be higher than
at other homes in the community as a result of materials used in
in your homes plumbing. If you are concerned about elevated lead
levels in your homes water, you may wish to have your water
tested and flush your tap for 30 seconds to 2 minutes before
using tap water. Additional information is available from the
Safe Drinking Water Hotline at 1-800-426-4791.
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While your drinking
water meets EPA's standard for arsenic, it does contain low
levels of arsenic. EPA's standard balances the current
understanding of arsenic's possible health effects against the
costs of removing arsenic from drinking water. EPA continues to
research the health effects of low levels of arsenic, which is a
mineral known to cause cancer in humans at high concentrations
and is linked to other health effects such as skin damage and
circulatory problems. The Michigan Department of Environmental
Quality allows us to monitor on a three year cycle. This means
that three of nine wells are monitored once in three years, for
limited metals, and volatile organics.
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