Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
York County
8/9/2007 - 6/30/2020, 440 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 |
426 | 0.0 | 0.0 | 2419.6 | 211 | 49.5 | 0 |
E. Coli |
MPN/100 mL |
426 | 0.0 | 0.0 | 200.5 | 38 | 8.9 | 0 |
pH | - |
404 | 6.7 | 4.7 | 9.8 | 157 | 38.9 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 403 | 138.0 | 20.0 | 721.0 | 5 | 1.2 | 500 |
Corrosivity Index* |
- |
159 | -1.6 | -4.5 | 0.8 | 124 | 78.0 | - |
Hardness | mg/L | 170 | 70.7 | 0.8 | 434.8 | - | - | - |
Nitrate+Nitrite N |
mg/L | 216 | 4.7 | 0.2 | 33.1 | 21 | 9.7 | 10 |
Chloride | mg/L | 11 | 10.5 | 5.0 | 36.6 | 0 | 0.0 | 250 |
Sulfate | mg/L | 12 | 12.9 | 5.7 | 33.7 | 0 | 0.0 | 250 |
Aluminum | mg/L | 10 | 0.0 | 0.0 | 0.1 | 1 | 10.0 | 0.05-0.2 |
Arsenic | mg/L | 85 | 0.00 | 0.001 | 0.013 | 1 | 1.2 | 0.01 |
Barium | mg/L | 46 | 0.04 | 0.00 | 0.60 | 0 | 0.0 | 2 |
Cadmium | mg/L | 26 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 159 | 16.09 | 0.25 | 130.83 | - | - | - |
Chromium | mg/L | 26 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 190 | 0.03 | 0.01 | 7.72 | 2 | 1.1 | 1.0,1.3 |
Iron | mg/L | 154 | 0.1 | 0.1 | 25.0 | 16 | 10.4 | 0.3 |
Lead-1st draw |
mg/L | 100 | 0.01 | 0.003 | 0.201 | 27 | 27.0 | 0.015 |
Lead-Running | mg/L | 143 | 0.003 | 0.003 | 0.500 | 10 | 7.0 | 0.015 |
Magnesium | mg/L | 159 | 5.99 | 0.05 | 45.59 | - | - | - |
Manganese | mg/L | 153 | 0.01 | 0.01 | 1.07 | 26 | 17.0 | 0.05 |
Mercury | mg/L | 37 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 26 | 0.01 | 0.005 | 0.022 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 26 | 0.03 | 0.01 | 0.16 | 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