2011 WATER QUALITY REPORT
FOR
AUTUMN RIDGE MHP
This report contains important information regarding the water quality in our water system. The source of our water is surface water purchased from Des Moines Water
Works. Our surface water is drawn from Des Moines River Raccoon River and Maffitt Reservoir.
Our water quality testing shows the following results:
CONTAMINANT
MCLG
MCL
DETECTED LEVEL
DATE
RANGE OF DETECTION
VIOLATION
SOURCE
SAMP
LED
Chlorine (ppm)-Ankeny
MRDLG MRDL=4.0
-Ankeny
01/010.25-1.55
No
Water additive used to
Chlorine (ppm)-DSM
=4.0
1.02-DSM
12/31/11 0.15-3.0
control microbes
Chlorine (ppm) –Autumn Rg
1.0-AR
0.8-1.1
Atrazine (ppb)-Fluer Plant
1,2-Dichloroethane.
3
0
3
5
Turbidity
Total Coliform Bacteria
0
Nitrate [as N] (ppm)
10
Presence of
coliform
bacteria in
>5% of
monthly
samples
10
<0.1-Fluer
<0.1-McMullen
<0.1-Saylorville
<0.5-Fluer
N/A-McMullen
<0.5-Saylorville
2011
2011
N/A
No
0.52-Fluer
0.11-McMullen
0.5- Saylorville
2011
0.04-0.52 Fluer
0.04-0.11- McMullen
0.09-0.50- Saylorville
No
2010
1-Positive samples
No
2011
0.56-8.08-Fluer
0.61-8.29-McMullen
0-0.52-Saylorville
No
Runoff from fertilizer
use; Leaching from
septic tanks, sewage;
Erosion of natural
deposits
Discharge from
chemical factories
Water additive which
promotes strong
teeth; Erosion of
natural deposits;
Discharge from
fertilizer and
aluminum factories
Erosion of natural
deposits; Added to
water during
treatment process
8.08. -Fluer
8.29-McMullen
0.52-Sayorville
storage and recover
wells
6.79- LP Moon
3.85-Ankeny Well 1
6.94-McMullen
Di(2-ethylhexyl)adipate
(ppb)
Fluoride (ppm)
Sodium (ppm)
No
N/A
400
2.2-Saylorville
2011
<0.6-2.2
No
4
4
0.93-Fluer
0.85-McMullen
2011
0.77-0.93-Fluer
0.67-0.85-McMullen
No
2011
N/A
No
N/A
N/A
Turbidity has no
health effects.
However, turbidity
can interfere with
disinfection and
provide a medium for
microbial growth.
Turbidity may
indicate the presence
of disease-causing
organisms. These
organisms include
bacteria, viruses, and
parasites that can
cause symptoms such
as nausea, cramps,
diarrhea, and
associated headaches
Naturally present in
the environment
4.4-6.79-LP Moon
1.71-3.85-Ankeny Well 1
1.23-6.94- McMullen
400
storage and recover
wells
1.45-LP Moon well1.17-McMullen
13.6-Fluer
9.85-McMullen
storage and recover
wells
30.5-Saylorville
14.40-LP Moon well20.30-Ankeny Well l
Runoff from
herbicide used on
row crops
Some people who
drink water
containing 1,2dichloroethane in
excess of the MCL
over many years may
have an increased
risk of getting
cancer.
Copper (ppm)Autumn Rdg
1.3
AL=1.3
Lead (ppb)Autumn Rdg
0
AL=15
TTHM (ppb) [Total
N/A
trihalomethanes] Autumn Rdg
Haloacetic Acids
(HAA5) (ppb) Autumn Rdg
N/A
80
60
0-90th %-10 samples
0-90th % & 95% -10
samples
6/1/099/30/11
6/1/099/30/11
41.00
2011
12.10
2011
0-0.0056-10 samples
0-5- 10 samples
23-60 0.02590.0527Distribution
Combined Distribution
No
No
No
Corrosion of household
plumbing systems;
Erosion
of natural deposits
Corrosion of
household plumbing
systems; erosion of
natural deposits
By-products of drinking
water disinfection
9-14
No
By-products of
0.00964-0.0169-Distribution
drinking water
Combined Distribution
disinfection
Note: Contaminants with dates indicate results from the most recent testing done in accordance with regulations.
DEFINITIONS

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.

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.

ppb -- parts per billion.

ppm -- parts per million.

pCi/L – picocuries per liter

N/A – Not applicable

ND -- Not detected

Treatment Technique (TT) – A required process intended to reduce the level of a contaminant in drinking water.

Action Level (AL) – The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

Maximum Residual Disinfectant 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.

Maximum Residual Disinfectant 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.
GENERAL INFORMATION
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 posed a health risk. More information about contaminants or potential health effects can be obtained by calling the Environmental
Protection Agency’s Safe Drinking Water Hotline (800-426-4791).
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 microbial contaminants are available from the Safe Drinking Water Hotline (800-426-4791).
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. Autumn Ridge MHP 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 or at
http://www.epa.gov/safewater/lead.
CONTAMINANT VIOLATIONS
The system had no violations.
ADDITIONAL HEALTH INFORMATION
Nitrate. Infants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms
include shortness of breath and blue-baby syndrome.
Copper. Copper is an essential nutrient but some people who drink water containing copper in excess of the action level over a relatively short amount of time could
experience gastrointestinal distress. Some people who drink water containing copper in excess of the action level over many years could suffer liver or kidney damage.
People with Wilson's Disease should consult their personal doctor.
Lead. 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.
HAA5: Some people who drink water containing haloacetic acids in excess of the MCL over many years may have an increased risk of getting cancer.
TTHMs [Total Trihalomethanes]. Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their
liver, kidneys, or central nervous systems, and may have an increased risk of getting cancer.
OTHER VIOLATIONS
The Des Moines, Ankeny plant had one sample that tested positive for TOTAL coliforms, however repeat samples indicated coliform bacteria was not present and the
water was determined to be safe for consumption.
SOURCE WATER ASSESSMENT INFORMATION
The Autumn Ridge MHP water supply obtains its water from the one or more groundwater aquifers. The unknown aquifer was determined to be insignificant to
contamination because the characteristics of the aquifer and overlying materials and human activity. Susceptibility to contamination generally increases with shallower
aquifers, increasing permeability of the aquifer and overlying material, nearby development or agriculture activity, and abandoned or poorly maintained wells. A detailed
evaluation of your source water was completed by the Iowa Department of Natural Resources and is available from this water supply.
The Des Moines Water Works obtains its water from the Des Moines River, Raccoon River and Maffitt Reservoir. The Des Moines River, Raccoon River and Maffitt
Reservoir were determined to be highly susceptible to contamination because they are surface water supplies. The Des Moines River, Raccoon River and Maffitt
Reservoir will be most susceptible to activities such as agricultural and urban runoff. A detailed evaluation of your source water was completed by the Des Moines Water
Works, and is available from Des Moines Water Works at 515/283-8700.
OTHER INFORMATION
Des Moines Water Works monitors for turbidity. Turbidity is an indicator of treatment filter performance and is regulated as a treatment technique. Des Moines Water
Works also monitors for several unregulated contaminants as required by their state operation permit.
CONTACT INFORMATION
For questions regarding this information, please contact Tom Thorpe at 515-289-2345 from 8-5.