Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Delaware County
9/11/2007 - 7/6/2022, 193 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 |
146 | 0.0 | 0.0 | 200.5 | 48 | 32.9 | 0 |
E. Coli |
MPN/100 mL |
146 | 0.0 | 0.0 | 200.5 | 5 | 3.4 | 0 |
pH | - |
142 | 7.3 | 5.2 | 9.1 | 20 | 14.1 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 140 | 242.5 | 38.0 | 1080.0 | 7 | 5.0 | 500 |
Corrosivity Index* |
- |
80 | -0.9 | -3.5 | 1.7 | 52 | 65.0 | - |
Hardness | mg/L | 115 | 136.0 | 0.8 | 402.9 | - | - | - |
Nitrate+Nitrite N |
mg/L | 26 | 2.0 | 0.3 | 7.9 | 0 | 0.0 | 10 |
Chloride | mg/L | 12 | 15.1 | 2.0 | 315.9 | 1 | 8.3 | 250 |
Sulfate | mg/L | 5 | 33.0 | 6.3 | 70.1 | 0 | 0.0 | 250 |
Aluminum | mg/L | 4 | 0.0 | 0.0 | 0.1 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 27 | 0.00 | 0.001 | 0.009 | 0 | 0.0 | 0.01 |
Barium | mg/L | 20 | 0.06 | 0.00 | 0.31 | 0 | 0.0 | 2 |
Cadmium | mg/L | 14 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 79 | 31.59 | 0.25 | 67.66 | - | - | - |
Chromium | mg/L | 14 | 0.0 | 0.002 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 95 | 0.02 | 0.01 | 12.72 | 2 | 2.1 | 1.0,1.3 |
Iron | mg/L | 112 | 0.1 | 0.1 | 28.8 | 9 | 8.0 | 0.3 |
Lead-1st draw |
mg/L | 71 | 0.00 | 0.003 | 0.082 | 11 | 15.5 | 0.015 |
Lead-Running | mg/L | 81 | 0.003 | 0.003 | 0.024 | 3 | 3.7 | 0.015 |
Magnesium | mg/L | 79 | 10.50 | 0.05 | 56.81 | - | - | - |
Manganese | mg/L | 113 | 0.01 | 0.01 | 7.91 | 11 | 9.7 | 0.05 |
Mercury | mg/L | 17 | 0.00 | 0.000 | 0.002 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 14 | 0.01 | 0.005 | 0.017 | - | - | - |
Sodium | mg/L | 1 | 5.70 | 5.70 | 5.70 | - | - | - |
Zinc | mg/L | 14 | 0.05 | 0.01 | 4.60 | 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