Test
|
Date Tested
|
Unit
|
MCLG
(MRDLG)
|
MCL
(MRDL)
|
Detected Level
|
Range
|
Violation
|
Major Sources
|
Lowest
|
Highest
|
Inorganic
|
Fluoride
|
2006
|
ppm
|
4
|
4
|
Average: 0.90
|
0.58
|
1.03
|
NO
|
Erosion of natural deposits; water additive–promotes strong teeth
|
Nitrate
|
2006
|
ppm
|
10
|
10
|
0.09
|
<0.05
|
0.09
|
NO
|
Runoff from fertilizer use; leaching from septic tanks; erosion of natural deposits
|
Nitrate-Nitrite
|
2006
|
ppm
|
10
|
10
|
0.09
|
<0.05
|
0.09
|
NO
|
Runoff from fertilizer use; leaching from septic tanks; erosion of natural deposits
|
Copper
|
2006
|
ppm
|
1.3
|
AL=1.3
|
90th percentile: 1.09
Homes exceeding: 2
|
0.04
|
8.4
|
NO
|
Corrosion of household plumbing systems
|
Lead
|
2006
|
ppb
|
0
|
AL=15
|
90th percentile: 8.6
Homes exceeding: 2
|
<0.5
|
24
|
NO
|
Corrosion of household plumbing systems
|
Microbiological
|
Turbidity
|
2006
|
NTU
|
n/a
|
TT
|
100% of samples meet turbidity standards
|
0.05
|
0.46
|
NO
|
Erosion and soil runoff
|
Total coliform
|
2006
|
no units
|
0
|
Presence of coliform bacteria in >5% of monthly samples
|
Coliform bacteria were not detected
|
None
|
3
|
NO
|
Naturally present in the environment
|
Fecal coliform or E. coli bacteria
|
Fecal coliform orE. coli bacteria were not detected
|
NO
|
Human or animal fecal waste
|
Disinfection By-Products
|
Haloacetic acids
|
2006
|
ppb
|
0
|
60
|
Highest quarterly average: 26
|
17
|
51
|
NO
|
By-product of drinking water disinfection
|
Total Trihalomethanes
|
2006
|
ppb
|
0
|
80
|
Highest quarterly average: 28
|
17
|
43
|
NO
|
By-product of drinking water disinfection
|
Chlorine Residual
|
2006
|
ppm
|
4.0
|
4.0
|
System average: 1.00
|
0.26
|
1.65
|
NO
|
Remaining chlorine from disinfection process
|
Unregulated Contaminants
|
Sodium
|
2006
|
ppm
|
|
20*
|
Average: 4.44
|
3.50
|
5.37
|
NO
|
Erosion of natural deposits
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
