Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Columbia County
9/11/2007 - 6/25/2020, 322 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 |
317 | 1.0 | 0.0 | 250.6 | 162 | 51.1 | 0 |
E. Coli |
MPN/100 mL |
317 | 0.0 | 0.0 | 200.5 | 23 | 7.3 | 0 |
pH | - |
291 | 7.4 | 5.5 | 9.3 | 53 | 18.2 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 289 | 117.0 | 20.0 | 4032.0 | 3 | 1.0 | 500 |
Corrosivity Index* |
- |
92 | -0.8 | -4.3 | 1.3 | 55 | 59.8 | - |
Hardness | mg/L | 106 | 68.4 | 0.8 | 1013.3 | - | - | - |
Nitrate+Nitrite N |
mg/L | 95 | 1.4 | 0.2 | 33.6 | 3 | 3.2 | 10 |
Chloride | mg/L | 47 | 3.2 | 2.0 | 30.8 | 0 | 0.0 | 250 |
Sulfate | mg/L | 9 | 24.2 | 1.5 | 50.3 | 0 | 0.0 | 250 |
Aluminum | mg/L | 5 | 0.0 | 0.0 | 0.0 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 44 | 0.00 | 0.001 | 0.012 | 3 | 6.8 | 0.01 |
Barium | mg/L | 65 | 0.06 | 0.00 | 0.34 | 0 | 0.0 | 2 |
Cadmium | mg/L | 20 | 0.00 | 0.001 | 0.004 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 101 | 16.59 | 0.25 | 187.97 | - | - | - |
Chromium | mg/L | 20 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 108 | 0.02 | 0.01 | 6.23 | 1 | 0.9 | 1.0,1.3 |
Iron | mg/L | 108 | 0.1 | 0.1 | 11.1 | 13 | 12.0 | 0.3 |
Lead-1st draw |
mg/L | 53 | 0.00 | 0.003 | 0.695 | 8 | 15.1 | 0.015 |
Lead-Running | mg/L | 78 | 0.003 | 0.003 | 4.590 | 9 | 11.5 | 0.015 |
Magnesium | mg/L | 101 | 4.98 | 0.05 | 132.10 | - | - | - |
Manganese | mg/L | 108 | 0.01 | 0.01 | 0.88 | 25 | 23.1 | 0.05 |
Mercury | mg/L | 25 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 20 | 0.01 | 0.005 | 0.011 | - | - | - |
Sodium | mg/L | 16 | 6.35 | 0.99 | 46.10 | - | - | - |
Zinc | mg/L | 20 | 0.02 | 0.01 | 0.06 | 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