Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Chester County
1/18/2008 - 6/20/2023, 397 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 |
372 | 0.0 | 0.0 | 200.5 | 118 | 31.7 | 0 |
E. Coli |
MPN/100 mL |
372 | 0.0 | 0.0 | 36.4 | 6 | 1.6 | 0 |
pH | - |
320 | 7.0 | 5.1 | 11.4 | 88 | 27.5 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 317 | 201.0 | 20.0 | 868.0 | 8 | 2.5 | 500 |
Corrosivity Index* |
- |
181 | -1.6 | -5.2 | 1.9 | 147 | 81.2 | - |
Hardness | mg/L | 184 | 82.3 | 0.8 | 403.0 | - | - | - |
Nitrate+Nitrite N |
mg/L | 133 | 3.6 | 0.2 | 13.9 | 7 | 5.3 | 10 |
Chloride | mg/L | 22 | 15.8 | 2.8 | 407.7 | 1 | 4.5 | 250 |
Sulfate | mg/L | 24 | 20.3 | 5.8 | 126.0 | 0 | 0.0 | 250 |
Aluminum | mg/L | 18 | 0.0 | 0.0 | 0.1 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 113 | 0.00 | 0.001 | 0.014 | 1 | 0.9 | 0.01 |
Barium | mg/L | 52 | 0.04 | 0.00 | 1.50 | 0 | 0.0 | 2 |
Cadmium | mg/L | 30 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 177 | 19.88 | 0.25 | 126.03 | - | - | - |
Chromium | mg/L | 30 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 213 | 0.04 | 0.01 | 11.31 | 2 | 0.9 | 1.0,1.3 |
Iron | mg/L | 184 | 0.1 | 0.1 | 28.5 | 24 | 13.0 | 0.3 |
Lead-1st draw |
mg/L | 164 | 0.00 | 0.003 | 0.103 | 15 | 9.1 | 0.015 |
Lead-Running | mg/L | 141 | 0.003 | 0.001 | 0.052 | 5 | 3.5 | 0.015 |
Magnesium | mg/L | 177 | 8.03 | 0.05 | 43.37 | - | - | - |
Manganese | mg/L | 181 | 0.01 | 0.01 | 10.40 | 25 | 13.8 | 0.05 |
Mercury | mg/L | 39 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 30 | 0.01 | 0.005 | 0.023 | - | - | - |
Sodium | mg/L | 39 | 13.81 | 3.62 | 82.60 | - | - | - |
Zinc | mg/L | 30 | 0.01 | 0.005 | 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 - 4:00 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