Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Chester County
1/18/2008 - 7/6/2022, 329 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 |
307 | 0.0 | 0.0 | 200.5 | 105 | 34.2 | 0 |
E. Coli |
MPN/100 mL |
307 | 0.0 | 0.0 | 36.4 | 5 | 1.6 | 0 |
pH | - |
267 | 7.0 | 5.1 | 11.4 | 63 | 23.6 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 264 | 199.5 | 24.0 | 868.0 | 8 | 3.0 | 500 |
Corrosivity Index* |
- |
155 | -1.6 | -4.7 | 1.9 | 125 | 80.6 | - |
Hardness | mg/L | 157 | 81.7 | 0.8 | 403.0 | - | - | - |
Nitrate+Nitrite N |
mg/L | 118 | 3.6 | 0.2 | 13.9 | 7 | 5.9 | 10 |
Chloride | mg/L | 16 | 13.1 | 5.5 | 407.7 | 1 | 6.3 | 250 |
Sulfate | mg/L | 15 | 20.5 | 5.8 | 77.2 | 0 | 0.0 | 250 |
Aluminum | mg/L | 14 | 0.0 | 0.0 | 0.1 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 80 | 0.00 | 0.001 | 0.014 | 1 | 1.3 | 0.01 |
Barium | mg/L | 37 | 0.05 | 0.00 | 1.50 | 0 | 0.0 | 2 |
Cadmium | mg/L | 21 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 151 | 18.81 | 0.25 | 126.03 | - | - | - |
Chromium | mg/L | 21 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 178 | 0.04 | 0.01 | 11.31 | 2 | 1.1 | 1.0,1.3 |
Iron | mg/L | 158 | 0.1 | 0.1 | 28.5 | 23 | 14.6 | 0.3 |
Lead-1st draw |
mg/L | 128 | 0.00 | 0.003 | 0.103 | 15 | 11.7 | 0.015 |
Lead-Running | mg/L | 112 | 0.003 | 0.003 | 0.051 | 3 | 2.7 | 0.015 |
Magnesium | mg/L | 151 | 8.03 | 0.05 | 43.37 | - | - | - |
Manganese | mg/L | 154 | 0.01 | 0.01 | 10.40 | 25 | 16.2 | 0.05 |
Mercury | mg/L | 29 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 21 | 0.01 | 0.005 | 0.020 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 21 | 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