| |
|
| Contaminant |
Violation Yes/No |
Date of
Sample |
Level Detected
(Avg/Max)
(Range) |
Unit
Measurement |
MCLG /
MRDLG |
Regulatory Limit
(MCL, MRDL,
TT or AL) |
Likely Source of Contamination |
| Physical Parameters |
| Turbidity (Distribution) (1) |
No |
Daily /
monthly |
0.05
(range = 0.02 – 0.08) |
NTU |
N/A |
TT = <5 NTU |
Soil Runoff. |
| Radioactive Contaminants |
| Gross alpha activity (including
radium – 226 but excluding
radon and uranium) |
No |
2008 |
0.52 |
pCi/l |
0 |
MCL=15 |
Erosion of natural deposits. |
| Radium – 226 |
No |
2008 |
0.00854 |
pCi/l |
0 |
MCL=5 |
Erosion of natural deposits. |
| Inorganic Contaminants |
| Copper |
No |
9/09 |
0.16 (2)
(range = 0.055 – 0.17) |
mg/l |
1.3 |
AL = 1.3 |
Corrosion of household plumbing
systems; Erosion of natural deposits. |
| Lead |
No |
9/09 |
1.2 (3)
(range = ND – 2.4) |
ug/l |
0 |
AL = 15 |
Corrosion of household plumbing
systems; Erosion of natural deposits. |
| Inorganics – Nitrate and Nitrite |
| Nitrate |
No |
9/09 |
0.43 |
mg/l |
10 |
MCL = 10 |
Runoff from fertilizer use; Erosion of
natural deposits. |
| Disinfectants |
| Chlorine Residual |
No |
Daily /
Monthly |
0.4 (4)
(range = 0.3 – 0.5) |
mg/l |
N/A |
MRDL = 4 (5) |
Water additive used to control microbes. |
| Disinfection Byproducts |
| Haloacetic Acids (mono-, di-, and trichloroacetic acid, and
mono- and dibromoacetic acid) |
No |
8/09 |
1.5 |
ug/l |
N/A |
MCL = 60 |
By-product of drinking water
disinfection needed to kill harmful
organisms. |
| Total Trihalomethanes
(TTHMs – chloroform,
bromodichloromethane,
dibromochloromethane and
bromoform) |
No |
8/09 |
5 |
ug/l |
N/A |
MCL = 80 |
By-product of drinking water
chlorination needed to kill harmful
organisms. TTHMs are formed when
source water contains large amounts of
organic matter. |