Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Centre County
6/20/2007 - 7/5/2022, 2,036 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 |
1833 | 0.0 | 0.0 | 2419.6 | 796 | 43.4 | 0 |
E. Coli |
MPN/100 mL |
1833 | 0.0 | 0.0 | 344.1 | 238 | 13.0 | 0 |
pH | - |
1190 | 7.7 | 4.8 | 10.3 | 117 | 9.8 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 1166 | 234.0 | 20.0 | 2735.0 | 51 | 4.4 | 500 |
Corrosivity Index* |
- |
540 | 0.2 | -5.5 | 2.1 | 336 | 62.2 | - |
Hardness | mg/L | 634 | 120.8 | 0.8 | 1777.9 | - | - | - |
Nitrate+Nitrite N |
mg/L | 523 | 1.5 | 0.2 | 33.2 | 22 | 4.2 | 10 |
Chloride | mg/L | 82 | 6.5 | 1.0 | 226.3 | 0 | 0.0 | 250 |
Sulfate | mg/L | 109 | 13.6 | 1.0 | 387.3 | 1 | 0.9 | 250 |
Aluminum | mg/L | 50 | 0.0 | 0.0 | 5.2 | 8 | 16.0 | 0.05-0.2 |
Arsenic | mg/L | 216 | 0.00 | 0.001 | 0.071 | 19 | 8.8 | 0.01 |
Barium | mg/L | 125 | 0.03 | 0.00 | 0.77 | 0 | 0.0 | 2 |
Cadmium | mg/L | 58 | 0.00 | 0.001 | 0.043 | 2 | 3.4 | 0.005 |
Calcium | mg/L | 530 | 25.97 | 0.25 | 540.35 | - | - | - |
Chromium | mg/L | 58 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 578 | 0.02 | 0.01 | 68.72 | 6 | 1.0 | 1.0,1.3 |
Iron | mg/L | 588 | 0.1 | 0.0 | 95.1 | 102 | 17.3 | 0.3 |
Lead-1st draw |
mg/L | 246 | 0.00 | 0.003 | 0.108 | 23 | 9.3 | 0.015 |
Lead-Running | mg/L | 376 | 0.003 | 0.003 | 0.307 | 12 | 3.2 | 0.015 |
Magnesium | mg/L | 422 | 6.34 | 0.05 | 104.09 | - | - | - |
Manganese | mg/L | 583 | 0.01 | 0.01 | 38.91 | 182 | 31.2 | 0.05 |
Mercury | mg/L | 184 | 0.05 | 0.000 | 3.130 | 117 | 63.6 | 0.002 |
Nickel | mg/L | 54 | 0.01 | 0.005 | 0.115 | - | - | - |
Sodium | mg/L | 115 | 0.01 | 0.01 | 3.66 | - | - | - |
Zinc | mg/L | 157 | 0.00 | 0.00 | 0.36 | 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