|
2002 WATER QUALITY DATA
|
CONTAMINANT |
VIOLATION
YES/NO |
MAX
LEVEL FOUND |
RANGE |
MCLG |
MCL |
YEAR AVERAGE |
LIKELY SOURCE OF CONTAMINATION |
Microbiological Contaminants
|
Turbidity |
NO |
0.75 NTU |
0.04-0.75 NTU |
TT |
SEE
[A] |
0.10 NTU |
Soil Run-Off |
|
Total Coliform |
NO |
1 positive sample |
(ND)-1 positive |
(ND) |
SEE
[B] |
>1 |
Naturally present in the environment |
|
Total Organic Carbon |
NO |
1.22 |
1.22-1.86 |
N/A |
TT |
1.51 |
Naturally present in the environment. |
[A] The turbidity limit is 0.3 NTU in 95% of the daily samples and
shall not exceed 1 NTU at any time
[B] Any presence of coliform bacteria
in > 5% of the monthly samples
Inorganic Contaminants (Regulated at the Treatment Plant)
|
Nitrate |
NO |
0.88 mg/l |
<0.10-0.88 mg/L |
10 mg/L |
10 mg/l |
0.35 mg/l |
Run-Off from fertilizer use and animal grazing |
|
Fluoride |
NO |
1.30 mg/l |
0.74-1.30 mg/L |
4 mg/L |
4 mg/L |
1.01 mg/L |
Erosion of natural deposits, additive which promotes strong teeth |
|
Chlorite |
NO |
0.61 mg/l |
0.0-0.61 mg/l |
0.8 mg/l |
1.0 mg/l |
0.23 mg/l |
By-product of drinking water Chlorination. |
| Barium (ppb) |
NO |
|
40 ug/l |
N/A |
|
200 ug/l |
200 ug/l |
40 ug/l |
Refineries,
drilling,erosion |
(Regulated at Your Tap)
|
Copper |
NO |
90th percentile
110.0 ppb |
<10 – 220 ppb |
1300 ppb |
AL=
1300 ppb |
65.6 ppb |
Corrosion of household plumbing systems |
|
Lead |
NO |
90th percentile
4.4 ppb |
< 2.0 – 8.5 ppb |
15 ppb |
AL=15 ppb |
1.3 ppb |
Corrosion of household plumbing systems |
Note: Lead and copper monitoring is only required once in every three
year monitoring period. The monitoring period was
completed in 2001. There were NO samples that exceeded 15ppb of lead and
NO samples exceeded 1300 ppb of copper in 2001.
Volatile Organic Contaminants (Regulated at the Treatment Plant)
|
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
|
NO
NO
NO
NO |
18.4 ppb
<0.5 ppb
12.7ppb
7.0 ppb |
12.0 – 18.4
< 0.5
8.4 – 12.7
4.0 – 7.0 |
N/A
N/A
N/A
N/A |
100 ppb |
15.1 ppb
<0.5 ppb
10.8 ppb
5.5 ppb |
By-Product of drinking water chlorination |
Volatile Organic Contaminants (Regulated in the
Distribution System)
|
TTHMs
Total Trihalomethanes |
NO |
66.0 ppb |
55.4-66.0 |
0 |
80
ppb |
59.6 ppb |
By-Product of drinking water chlorination |
|
Haloacetic Acids(HAA) |
NO |
25.4 ppb |
23.5-25.4
ppb |
60.0
ppb |
N/A |
24.3 ppb |
By-Product of drinking water disinfection. |
Radioactive Contaminants (Regulated at the Treatment Plant)
|
Gross Alpha PCi/L |
NO |
< 3 pCi/L |
NA |
0 |
15 pCi/L |
< 3 pCi/L |
Erosion of natural deposits
|
|
Gross Beta PCi/L |
NO |
7.7 pCi/L |
NA |
0 |
Al=50 pCi/L |
7.7 pCi/L |
Decay of natural and man made deposits |
Note: Radioactive monitoring is only required once a year.
Synthetic Organic Contaminants (Regulated at the Plant)
|
Atrazine (ppb) |
No |
0.36 ppb |
<0.3-0.36 ppb |
3.0 ppb
|
3.0ppb |
<0.3 ppb |
Runoff from herbicide used on row crops |
Residual Disinfectants
|
Chlorine |
No |
1.46 mg/l |
1.27-1.46 mg/l |
4 mg/l |
4 mg/l |
1.38 mg/l |
Water additive used to control microbes |
|
Chlorine dioxide |
No |
0.18 mg/l |
0.0-0.18 mg/l |
0.80 mg/l |
0.80 mg/l |
0.02 mg/l |
Water additive used to control microbes |
|
