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Back to: Public Works | Water System | 1999 Archived Report Shawnee Public Water System
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TEST RESULTS |
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|
Contaminant |
Violation
Y/N |
Level
Detected |
Range
Detected |
MCL |
MCLG |
Likely
Source of Contamination |
|
Microbiological
Contaminants |
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|
1.
Total Coliform Bacteria |
Y |
2 positive |
n/a |
1 positive |
0 |
Naturally
present in the environment |
|
3. Turbidity (NTU)(maximum
single measurement) (maximum monthly level) |
N |
0.55 NTU 100% |
n/a |
TT=5
NTU TT£0.5
NTU in 95% of monthly samples |
n/a |
Soil
runoff |
|
Radioactive
Contaminants |
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|
4.
Beta/photon emitters (pCi/l) |
N |
3.943 10/18/99 |
4.0-5.0 |
50 |
0 |
Decay
of natural and manmade deposits |
|
5.
Alpha emitters (pCi/1) |
N |
-0.438 10/18/99 |
-1.0-0.0 |
15 |
0 |
Erosion
of natural deposits |
|
Inorganic
Contaminants |
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|
10. Barium (ppb) |
N |
96.00 8/29/95 |
n/a |
2000 |
2000 |
Discharge
of drilling wastes; discharge from metal refineries; erosion of
natural deposits |
|
14. Copper (ppm) |
N |
0.240 8/6/1998 |
0# of samples exceeded AL |
*AL=1.3 |
1.3 |
Corrosion
of household plumbing systems; erosion of natural deposits;
leaching from wood preservatives |
|
16. Fluoride (ppm) |
N |
1.15 6/14/94 |
n/a |
4 |
4 |
Erosion
of natural deposits; water additive which promotes strong teeth;
discharge from fertilizer and aluminum factories |
|
17. Lead (ppb) |
N |
0.058 8/6/1998 |
0# of sites exceeded AL |
*AL=15 |
0 |
Corrosion
of household plumbing systems, erosion of natural deposits |
|
19. Nitrate (ppm)
(as Nitrogen) |
N |
0.13 3/09/99 |
n/a |
10 |
10 |
Runoff
from fertilizer use; leaching from septic tanks, sewage; erosion
of natural deposits |
|
Volatile
Organic Contaminants |
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|
73. TTHM [Total trihalomethanes] (ppb) |
Y |
144.0 |
702.0-2310.0 |
100 |
0 |
By-product
of drinking water chlorination |
(1)
Total Coliform. In Augustl there were two (2) positive samples. Re-tests
indicated that there was no violation.
(73)
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.
*
Action Level – 90% of samples must
be below this level.
The
table shows that our system exceeded the MCL for total trihalomethanes in
2000. 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. The City of Shawnee
has addressed this problem by employing the engineering firm of HUB+Garver
to determine needed improvements to meet current and future regulations.
Phase 1 of our water treatment plant improvements is underway.
Construction commenced on February 26, 2001. Additional improvements are
planned.
TTHMs
are by-products of the disinfection process. The MCL limit is 100 parts
per billion calculated on a running quarterly average. The highest
quarterly average for 2000 was 144 parts per billion. The quarterly
average for the first quarter of 1999 was 56 parts per billion.
All sources of drinking water are subject to potential contamination by
constituents that are naturally occurring or are man-made.
Those constituents can be microbes, organic or inorganic chemicals,
or radioactive materials. 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. 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).
| Contact James B. Cole Public Works Director (404) 878-1662 jcole-at- Shawneeok.org |
City of Shawnee P.O. Box 1448 Shawnee, OK 74802-1448. |
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