Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Chester County
1/18/2008 - 7/13/2021, 260 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 |
242 | 0.0 | 0.0 | 200.5 | 91 | 37.6 | 0 |
E. Coli |
MPN/100 mL |
242 | 0.0 | 0.0 | 36.4 | 5 | 2.1 | 0 |
pH | - |
230 | 7.0 | 5.1 | 10.3 | 52 | 22.6 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 228 | 198.0 | 24.0 | 868.0 | 7 | 3.1 | 500 |
Corrosivity Index* |
- |
126 | -1.6 | -4.7 | 1.9 | 97 | 77.0 | - |
Hardness | mg/L | 128 | 81.2 | 0.8 | 403.0 | - | - | - |
Nitrate+Nitrite N |
mg/L | 78 | 4.0 | 0.2 | 13.9 | 7 | 9.0 | 10 |
Chloride | mg/L | 16 | 15.8 | 5.5 | 407.7 | 1 | 6.3 | 250 |
Sulfate | mg/L | 14 | 24.6 | 5.8 | 77.2 | 0 | 0.0 | 250 |
Aluminum | mg/L | 11 | 0.0 | 0.0 | 0.1 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 48 | 0.00 | 0.001 | 0.014 | 1 | 2.1 | 0.01 |
Barium | mg/L | 36 | 0.05 | 0.00 | 1.50 | 0 | 0.0 | 2 |
Cadmium | mg/L | 19 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 123 | 19.88 | 0.25 | 126.03 | - | - | - |
Chromium | mg/L | 19 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 147 | 0.04 | 0.01 | 11.31 | 2 | 1.4 | 1.0,1.3 |
Iron | mg/L | 129 | 0.1 | 0.1 | 28.5 | 20 | 15.5 | 0.3 |
Lead-1st draw |
mg/L | 80 | 0.00 | 0.003 | 0.103 | 11 | 13.8 | 0.015 |
Lead-Running | mg/L | 91 | 0.003 | 0.003 | 0.052 | 3 | 3.3 | 0.015 |
Magnesium | mg/L | 123 | 8.29 | 0.05 | 43.37 | - | - | - |
Manganese | mg/L | 126 | 0.01 | 0.01 | 10.40 | 23 | 18.3 | 0.05 |
Mercury | mg/L | 27 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 19 | 0.01 | 0.005 | 0.020 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 19 | 0.02 | 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