|
2009 Sampling Summary - Substances Detected |
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| Parameter | Highest Level Allowed EPA's MCL |
Ideal Goals EPA's MCLG |
Potential Sources |
Highest Level Detected in 2009 |
Ranges of Levels Detected in 2009 |
Meets Standard |
| Regulated at the Surface Water Source | ||||||
| Turbidity | Treatment Technique 5 NTU |
N/A |
Soil runoff |
3.21 NTUs |
0.42 - NTUs |
Yes | Regulated at the Groundwater Sources |
| Arsenic | 10 ppb |
0 |
Erosion of natural deposits |
4 ppb |
0 - 4 ppb |
Yes |
| Nitrate | 10 ppb |
0 |
Fertilizer use |
0.8 ppb |
0 - 0.8 ppb |
Yes |
| Radium 228 | 5 pCi/l |
0 |
Erosion of natural deposits |
2.3 |
0 - 2.3 |
Yes |
| Regulated in the Distribution System | ||||||
| Total coliform |
Presence of coliform in less than 5% of monthly samples |
0 |
Naturally occurs in the environment |
1.1%* |
0 - 1.1%* |
Yes |
| Trihalomethanes | 80 ppb |
N/A |
By-product of drinking water chlorination |
43.1 ppb annual average |
0 - 58.8 ppb |
Yes |
| Haloacetic acids | 60 ppb |
N/A |
By-product of drinking water chlorination |
5.2 ppb annual average |
0 - 11.5 ppb |
Yes |
| Chlorine | 4 ppm |
4 ppm |
Water additive used to control microbes |
0.64 ppm annual average |
0.01 - 1.47 ppm |
Yes |
| Regulated at the Customer Tap | ||||||
| Lead Most recently sampled in 2008 |
Action Level = 15 ppb |
0 |
Household plumbing |
4 ppb 90th percentile |
No sample sites exceeded the Action Level |
Yes |
| Copper Most recently sampled in 2008 |
Action Level = 1300 ppb |
0 |
Household plumbing |
80 ppb 90th percentile |
No sample sites exceeded the Action Level |
Yes |
| *899 samples were taken in 2009, and only one had coliform present. | ||||||