| Regulated |
MCL |
MCLG |
Highest Level Detected |
Range of Detection |
Violation |
Major Source of Contamination |
| Nitrate (ppm) |
10 |
10 |
3.0 |
1.4 – 3.0 |
NO |
Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits |
| Gross Alpha activity(pCi/L) (data from 2012) |
15 |
0 |
2.6 |
.13 – 2.6 |
NO |
Erosion of natural deposits |
| Combined Radium (pCi/L) (data from 2012) |
5 |
0 |
1.1 |
.8 – 1.1 |
NO |
Erosion of natural deposits |
| Barium (ppm) (data from 2013) |
2 |
2 |
.055 |
.022 – .055 |
NO |
Erosion of natural deposits |
| Total Haloacetic Acids (HAA5) (ppb) |
60 |
n/a |
1.8 |
.9 – 1.8 |
NO |
By product of drinking water disinfection |
| Total Trihalomethane (TTHM) (ppb) |
80 |
n/a |
12.0 |
3.9 – 12.0 |
NO |
By product of drinking water disinfection |
| Unregulated |
ORSG |
SMCL |
Average |
Range of Detection |
|
|
| Sulfate (ppm) (data from 2013) |
– |
250 |
11.02 |
9.1 – 12.0 |
NO |
Naturally occurring |
| Sodium (ppm) (data from 2013) |
20 |
– |
19 |
12 – 30 |
NO |
Naturally occurring salt deposits; storm water runoff |
| Manganese (ppm) |
.3 |
.05 |
.06 |
.016 – .11 |
NO |
Erosion of natural deposits |
| Chloroform (ppb) |
60 |
– |
.70 |
.51 – 1.2 |
NO |
Naturally occurring |
| Lead and Copper |
Action Level (AL) |
MCLG |
90th Percentile |
Samples Above the AL |
|
|
| Lead (ppb) (data from 2013) |
15 |
15 |
0 |
0 out of 20 |
NO |
Corrosion of household plumbing |
| Copper (ppm) (data from 2013) |
1.3 |
1.3 |
.21 |
0 out of 20 |
NO |
Corrosion of household plumbing |
| Microbiological Contaminants |
MCL |
|
Highest # Positive Samples |
|
|
|
| Total Coliform * |
>5% of Samples |
|
1 |
|
NO |
Naturally present in environment |
| E. coli** |
0 |
|
1 |
|
YES |
Human and animal fecal waste |
