Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Chester County
1/18/2008 - 6/23/2020, 219 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 |
204 | 0.0 | 0.0 | 200.5 | 74 | 36.3 | 0 |
E. Coli |
MPN/100 mL |
204 | 0.0 | 0.0 | 36.4 | 5 | 2.5 | 0 |
pH | - |
198 | 7.0 | 5.1 | 10.3 | 42 | 21.2 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 196 | 189.5 | 24.0 | 868.0 | 5 | 2.6 | 500 |
Corrosivity Index* |
- |
104 | -1.5 | -4.7 | 1.9 | 80 | 76.9 | - |
Hardness | mg/L | 106 | 78.1 | 0.8 | 403.0 | - | - | - |
Nitrate+Nitrite N |
mg/L | 66 | 3.8 | 0.2 | 13.9 | 6 | 9.1 | 10 |
Chloride | mg/L | 13 | 10.5 | 5.5 | 407.7 | 1 | 7.7 | 250 |
Sulfate | mg/L | 11 | 20.5 | 5.8 | 77.2 | 0 | 0.0 | 250 |
Aluminum | mg/L | 10 | 0.0 | 0.0 | 0.1 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 44 | 0.00 | 0.001 | 0.014 | 1 | 2.3 | 0.01 |
Barium | mg/L | 30 | 0.05 | 0.00 | 1.50 | 0 | 0.0 | 2 |
Cadmium | mg/L | 16 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 102 | 18.74 | 0.25 | 126.03 | - | - | - |
Chromium | mg/L | 16 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 122 | 0.04 | 0.01 | 11.31 | 2 | 1.6 | 1.0,1.3 |
Iron | mg/L | 107 | 0.1 | 0.1 | 28.5 | 17 | 15.9 | 0.3 |
Lead-1st draw |
mg/L | 65 | 0.00 | 0.003 | 0.103 | 10 | 15.4 | 0.015 |
Lead-Running | mg/L | 73 | 0.003 | 0.003 | 0.051 | 2 | 2.7 | 0.015 |
Magnesium | mg/L | 102 | 7.62 | 0.05 | 43.37 | - | - | - |
Manganese | mg/L | 103 | 0.01 | 0.01 | 10.40 | 20 | 19.4 | 0.05 |
Mercury | mg/L | 21 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 16 | 0.01 | 0.005 | 0.020 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 16 | 0.01 | 0.01 | 0.59 | 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 - 4:30 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