Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Dauphin County
8/9/2007 - 5/27/2020, 182 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 |
164 | 0.0 | 0.0 | 200.5 | 77 | 47.0 | 0 |
E. Coli |
MPN/100 mL |
164 | 0.0 | 0.0 | 200.5 | 12 | 7.3 | 0 |
pH | - |
150 | 7.4 | 4.9 | 8.4 | 18 | 12.0 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 150 | 186.0 | 10.0 | 870.0 | 7 | 4.7 | 500 |
Corrosivity Index* |
- |
85 | -1.2 | -4.8 | 0.6 | 61 | 71.8 | - |
Hardness | mg/L | 89 | 75.5 | 0.8 | 541.3 | - | - | - |
Nitrate+Nitrite N |
mg/L | 49 | 3.7 | 0.2 | 10.6 | 2 | 4.1 | 10 |
Chloride | mg/L | 2 | 2.0 | 2.0 | 2.0 | 0 | 0.0 | 250 |
Sulfate | mg/L | 8 | 11.9 | 6.8 | 55.1 | 0 | 0.0 | 250 |
Aluminum | mg/L | 4 | 0.0 | 0.0 | 0.1 | 1 | 25.0 | 0.05-0.2 |
Arsenic | mg/L | 19 | 0.00 | 0.001 | 0.011 | 1 | 5.3 | 0.01 |
Barium | mg/L | 14 | 0.04 | 0.00 | 0.61 | 0 | 0.0 | 2 |
Cadmium | mg/L | 9 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 84 | 21.67 | 0.25 | 110.14 | - | - | - |
Chromium | mg/L | 9 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 95 | 0.03 | 0.01 | 3.41 | 1 | 1.1 | 1.0,1.3 |
Iron | mg/L | 84 | 0.1 | 0.1 | 11.4 | 10 | 11.9 | 0.3 |
Lead-1st draw |
mg/L | 54 | 0.01 | 0.003 | 0.040 | 10 | 18.5 | 0.015 |
Lead-Running | mg/L | 64 | 0.003 | 0.003 | 0.025 | 1 | 1.6 | 0.015 |
Magnesium | mg/L | 84 | 5.20 | 0.05 | 40.93 | - | - | - |
Manganese | mg/L | 86 | 0.01 | 0.01 | 2.61 | 14 | 16.3 | 0.05 |
Mercury | mg/L | 10 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 9 | 0.01 | 0.005 | 0.077 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 9 | 0.01 | 0.01 | 0.20 | 0 | 0.0 | 5 |
*For corrosivity index, failure criteria based on less than -0.5 or greater than 0.5
Ag Analytical Services Lab
Hours: Monday-Friday, 8:00 AM - 4:30 PM
- Email aaslab@psu.edu
- Office 814-863-0841
- Fax 814-863-4540
Ag Analytical Services Lab
Hours: Monday-Friday, 8:00 AM - 4:30 PM
- Email aaslab@psu.edu
- Office 814-863-0841
- Fax 814-863-4540