Dauphin
Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Dauphin County
8/9/2007 - 6/26/2018, 134 Samples
| Test Parameter | Units | Number of Samples Tested | Median | Minimum | Maximum | Number of samples failing EPA Std | Percent of samples failing EPA Std | EPA Drink Water Std |
|---|---|---|---|---|---|---|---|---|
| Total Coliform |
MPN/100 mL |
128 | 0.0 | 0.0 | 200.5 | 63 | 49.2 | 0 |
| E. Coli |
MPN/100 mL |
128 | 0.0 | 0.0 | 200.5 | 8 | 6.3 | 0 |
| pH | - |
117 | 7.3 | 4.9 | 8.3 | 15 | 12.8 | 6.5-8.5 |
| Total Dissolved Solids |
mg/L | 117 | 176.0 | 10.0 | 870.0 | 3 | 2.6 | 500 |
| Corrosivity Index* |
- |
61 | -1.2 | -4.8 | 0.6 | 47 | 77.0 | - |
| Hardness | mg/L | 65 | 74.1 | 0.8 | 352.1 | - | - | - |
| Nitrate+Nitrite N |
mg/L | 35 | 3.7 | 0.3 | 10.6 | 2 | 5.7 | 10 |
| Chloride | mg/L | 2 | 2.0 | 2.0 | 2.0 | 0 | 0.0 | 250 |
| Sulfate | mg/L | 6 | 9.6 | 6.8 | 15.2 | 0 | 0.0 | 250 |
| Aluminum | mg/L | 4 | 0.0 | 0.0 | 0.1 | 1 | 25.0 | 0.05-0.2 |
| Arsenic | mg/L | 11 | 0.00 | 0.001 | 0.011 | 1 | 9.1 | 0.01 |
| Barium | mg/L | 9 | 0.01 | 0.00 | 0.35 | 0 | 0.0 | 2 |
| Cadmium | mg/L | 7 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
| Calcium | mg/L | 61 | 19.34 | 0.25 | 108.18 | - | - | - |
| Chromium | mg/L | 7 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
| Copper | mg/L | 67 | 0.06 | 0.01 | 3.41 | 1 | 1.5 | 1.0,1.3 |
| Iron | mg/L | 63 | 0.1 | 0.0 | 1.9 | 8 | 12.7 | 0.3 |
| Lead-1st draw |
mg/L | 29 | 0.01 | 0.003 | 0.040 | 9 | 31.0 | 0.015 |
| Lead-Running | mg/L | 45 | 0.003 | 0.003 | 0.028 | 1 | 2.2 | 0.015 |
| Magnesium | mg/L | 45 | 5.28 | 0.06 | 31.95 | - | - | - |
| Manganese | mg/L | 64 | 0.01 | 0.01 | 40.93 | 22 | 34.4 | 0.05 |
| Mercury | mg/L | 23 | 0.05 | 0.000 | 11.394 | 17 | 73.9 | 0.002 |
| Nickel | mg/L | 6 | 0.01 | 0.005 | 0.005 | - | - | - |
| Sodium | mg/L | 17 | 0.01 | 0.01 | 2.61 | - | - | - |
| Zinc | mg/L | 19 | 0.00 | 0.00 | 0.02 | 0 | 0.0 | 5 |
*For corrosivity index, failure criteria based on less than -0.5 or greater than 0.5