Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Dauphin County
12/19/2001 - 6/20/2023, 275 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 |
250 | 0.0 | 0.0 | 200.5 | 99 | 39.6 | 0 |
E. Coli |
MPN/100 mL |
250 | 0.0 | 0.0 | 200.5 | 19 | 7.6 | 0 |
pH | - |
223 | 7.3 | 4.9 | 8.4 | 32 | 14.3 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 216 | 193.0 | 10.0 | 870.0 | 10 | 4.6 | 500 |
Corrosivity Index* |
- |
120 | -1.1 | -4.3 | 0.6 | 82 | 68.3 | - |
Hardness | mg/L | 128 | 101.6 | 0.8 | 541.3 | - | - | - |
Nitrate+Nitrite N |
mg/L | 81 | 2.7 | 0.2 | 11.2 | 3 | 3.7 | 10 |
Chloride | mg/L | 12 | 8.1 | 1.4 | 25.3 | 0 | 0.0 | 250 |
Sulfate | mg/L | 18 | 10.6 | 1.0 | 55.1 | 0 | 0.0 | 250 |
Aluminum | mg/L | 6 | 0.0 | 0.0 | 0.1 | 1 | 16.7 | 0.05-0.2 |
Arsenic | mg/L | 43 | 0.00 | 0.001 | 0.276 | 3 | 7.0 | 0.01 |
Barium | mg/L | 24 | 0.04 | 0.00 | 0.61 | 0 | 0.0 | 2 |
Cadmium | mg/L | 15 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 119 | 25.82 | 0.25 | 111.00 | - | - | - |
Chromium | mg/L | 15 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 137 | 0.02 | 0.01 | 3.41 | 1 | 0.7 | 1.0,1.3 |
Iron | mg/L | 123 | 0.1 | 0.1 | 11.4 | 20 | 16.3 | 0.3 |
Lead-1st draw |
mg/L | 87 | 0.00 | 0.003 | 0.040 | 11 | 12.6 | 0.015 |
Lead-Running | mg/L | 95 | 0.003 | 0.003 | 0.406 | 2 | 2.1 | 0.015 |
Magnesium | mg/L | 119 | 6.27 | 0.05 | 40.93 | - | - | - |
Manganese | mg/L | 125 | 0.01 | 0.01 | 2.61 | 27 | 21.6 | 0.05 |
Mercury | mg/L | 18 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 15 | 0.01 | 0.005 | 0.077 | - | - | - |
Sodium | mg/L | 1 | 7.57 | 7.57 | 7.57 | - | - | - |
Zinc | mg/L | 15 | 0.01 | 0.005 | 1.59 | 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 - 4:00 PM
- Email aaslab@psu.edu
- Office 814-863-0841
- Fax 814-863-4540
Ag Analytical Services Lab
Hours: Monday-Friday, 8:00 AM - 4:00 PM
- Email aaslab@psu.edu
- Office 814-863-0841
- Fax 814-863-4540