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Water
Quality Report This report contains important information regarding the
water quality in our water system. The source of our water is
groundwater. Our groundwater is drawn from Silurian and Cambrian
Jordan Sandstone aquifers. A source water assessment has not been
completed at this time. Our water quality testing shows the following
results:
| Contaminant |
MCLG |
MCL |
Detected
Level |
Date
Sampled |
Range
of Detection |
Violation |
Source |
| Total
Coliform |
0 |
Presence
of
coliform bacteria in >5% of monthly samples |
2
Positive Samples |
|
|
Yes |
Naturally
Present in the Environment |
| Fecal
coliform and E.Coli |
0 |
A
routine sample and a repeat sample are total coliform
positive, and
one is also fecal coliform or E. coli positive |
1 Positive
Sample |
|
|
Yes |
Human
and animal fecal waste |
| Alpha
emitters (pCi/L) |
0 |
15 |
10.6 |
4/17/1995 |
|
No |
Erosion
of natural deposits |
| Copper
(ppm) |
1.3 |
AL=1.3 |
1.2 |
|
ND-15 |
No |
Corrosion
of household pumbing systems; Eroision of natural deposits;
Leaching from wood preservatives |
Nitrate
[as N](ppm) |
10 |
10 |
0.14 |
10/4/1999 |
|
No |
Runoff
from fertilizer use; Leaching from septic tanks, sewage ;
Erosion of natural deposits |
| Sodium
(ppm) |
N/A |
N/A |
100 |
2/5/1997 |
|
No |
Erosion
of natural deposits; Added to water during treatment process |
| Sulfate
(ppm) |
N/A |
N/A |
470 |
2/5/1997 |
|
No |
Erosion
of Natural deposits |
| Fluoride
(ppm) |
4 |
4 |
1.0 |
2/5/1997 |
|
No |
Water
additive which promotes strong teeth; Eroision of natural
deposits; Discharge from fertilizer and aluminum factories |
Note: Contaminants with dates indicate
results from the most recent testing done in accordance with
regulations.
DEFINITIONS
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.
Immune-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 Clyptosporidium and other microbial contaminants are
available from the Safe Drinking Water Hotline (800-426-4791).
CONTAMINANT VIOLATIONS
Total Coliform. Coliforms are bacteria which are naturally
present in the environment and are used as an indicator that other,
potentially-harmful bacteria may be present. Coliforms were found in
more samples than allowed and this was a warning of potential
problems.
Fecal coliform/E.Coli. Fecal
coliform and E. Coli are bacteria whose presence indicates that the
water may be contaminated with human or animal wastes. Microbes in
these wastes can cause short-term effects, such as diarrhea, cramps,
nausea, headaches, or other symptoms. They may pose a special health
risk for infants, young children, and people with severely compromised
immune systems. The North Liberty Water Department identified the
problem and corrective action was taken immediately.
CONTACT INFORMATION
For questions regarding this information, please contact Michael
Keating at 319-626-5719 during the following hours: 7:00 am - 3:30 pm
Decisions regarding the water system
are made at the city council meetings held an second and fourth
Tuesday at 7:00 p.m. at the city council chambers, 25 W. Cherry Street
and are open to the public.
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