Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Dauphin County
8/9/2007 - 6/28/2022, 238 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 |
215 | 0.0 | 0.0 | 200.5 | 92 | 42.8 | 0 |
E. Coli |
MPN/100 mL |
215 | 0.0 | 0.0 | 200.5 | 18 | 8.4 | 0 |
pH | - |
189 | 7.3 | 4.9 | 8.4 | 23 | 12.2 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 189 | 198.0 | 10.0 | 870.0 | 9 | 4.8 | 500 |
Corrosivity Index* |
- |
111 | -1.1 | -4.8 | 0.6 | 75 | 67.6 | - |
Hardness | mg/L | 117 | 101.3 | 0.8 | 541.3 | - | - | - |
Nitrate+Nitrite N |
mg/L | 64 | 2.9 | 0.2 | 11.2 | 3 | 4.7 | 10 |
Chloride | mg/L | 3 | 2.0 | 2.0 | 2.3 | 0 | 0.0 | 250 |
Sulfate | mg/L | 14 | 10.4 | 1.0 | 55.1 | 0 | 0.0 | 250 |
Aluminum | mg/L | 5 | 0.0 | 0.0 | 0.1 | 1 | 20.0 | 0.05-0.2 |
Arsenic | mg/L | 29 | 0.00 | 0.001 | 0.016 | 2 | 6.9 | 0.01 |
Barium | mg/L | 20 | 0.04 | 0.00 | 0.61 | 0 | 0.0 | 2 |
Cadmium | mg/L | 13 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 110 | 25.96 | 0.25 | 111.00 | - | - | - |
Chromium | mg/L | 13 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 126 | 0.02 | 0.01 | 3.41 | 1 | 0.8 | 1.0,1.3 |
Iron | mg/L | 113 | 0.1 | 0.1 | 11.4 | 18 | 15.9 | 0.3 |
Lead-1st draw |
mg/L | 69 | 0.00 | 0.003 | 0.040 | 11 | 15.9 | 0.015 |
Lead-Running | mg/L | 86 | 0.003 | 0.003 | 0.025 | 1 | 1.2 | 0.015 |
Magnesium | mg/L | 110 | 6.18 | 0.05 | 40.93 | - | - | - |
Manganese | mg/L | 115 | 0.01 | 0.01 | 2.61 | 25 | 21.7 | 0.05 |
Mercury | mg/L | 17 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 13 | 0.01 | 0.005 | 0.077 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 13 | 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