Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Somerset County
8/20/2007 - 6/27/2023, 84 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 |
82 | 0.0 | 0.0 | 200.5 | 35 | 42.7 | 0 |
E. Coli |
MPN/100 mL |
82 | 0.0 | 0.0 | 8.7 | 8 | 9.8 | 0 |
pH | - |
75 | 7.5 | 4.8 | 9.2 | 14 | 18.7 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 74 | 158.5 | 20.0 | 829.0 | 1 | 1.4 | 500 |
Corrosivity Index* |
- |
24 | 0.0 | -5.5 | 0.4 | 10 | 41.7 | - |
Hardness | mg/L | 26 | 92.0 | 0.8 | 321.3 | - | - | - |
Nitrate+Nitrite N |
mg/L | 17 | 0.4 | 0.2 | 13.1 | 1 | 5.9 | 10 |
Chloride | mg/L | 8 | 3.5 | 1.0 | 34.6 | 0 | 0.0 | 250 |
Sulfate | mg/L | 8 | 7.7 | 1.0 | 74.0 | 0 | 0.0 | 250 |
Aluminum | mg/L | 8 | 0.0 | 0.0 | 2.5 | 2 | 25.0 | 0.05-0.2 |
Arsenic | mg/L | 19 | 0.00 | 0.003 | 0.017 | 3 | 15.8 | 0.01 |
Barium | mg/L | 16 | 0.04 | 0.00 | 0.30 | 0 | 0.0 | 2 |
Cadmium | mg/L | 11 | 0.00 | 0.001 | 0.001 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 24 | 26.58 | 0.25 | 90.80 | - | - | - |
Chromium | mg/L | 11 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 36 | 0.01 | 0.01 | 0.73 | 0 | 0.0 | 1.0,1.3 |
Iron | mg/L | 28 | 0.1 | 0.1 | 18.4 | 8 | 28.6 | 0.3 |
Lead-1st draw |
mg/L | 20 | 0.00 | 0.003 | 0.215 | 4 | 20.0 | 0.015 |
Lead-Running | mg/L | 23 | 0.003 | 0.003 | 0.019 | 1 | 4.3 | 0.015 |
Magnesium | mg/L | 24 | 6.06 | 0.05 | 22.96 | - | - | - |
Manganese | mg/L | 30 | 0.05 | 0.01 | 0.89 | 15 | 50.0 | 0.05 |
Mercury | mg/L | 12 | 0.00 | 0.001 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 11 | 0.01 | 0.005 | 0.011 | - | - | - |
Sodium | mg/L | 2 | 12.13 | 0.62 | 23.65 | - | - | - |
Zinc | mg/L | 11 | 0.01 | 0.005 | 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 - 4:00 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