Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Centre County
5/2/2007 - 6/29/2023, 2,658 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 |
2001 | 0.0 | 0.0 | 200.5 | 860 | 43.0 | 0 |
E. Coli |
MPN/100 mL |
2001 | 0.0 | 0.0 | 200.5 | 253 | 12.6 | 0 |
pH | - |
1607 | 7.6 | 4.1 | 10.3 | 169 | 10.5 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 1580 | 224.0 | 20.0 | 2735.0 | 63 | 4.0 | 500 |
Corrosivity Index* |
- |
590 | 0.1 | -4.6 | 2.1 | 359 | 60.8 | - |
Hardness | mg/L | 1028 | 110.9 | 0.8 | 1777.9 | - | - | - |
Nitrate+Nitrite N |
mg/L | 818 | 0.9 | 0.2 | 33.2 | 26 | 3.2 | 10 |
Chloride | mg/L | 439 | 6.5 | 1.0 | 568.8 | 5 | 1.1 | 250 |
Sulfate | mg/L | 466 | 13.4 | 0.1 | 431.3 | 4 | 0.9 | 250 |
Aluminum | mg/L | 56 | 0.0 | 0.0 | 5.2 | 9 | 16.1 | 0.05-0.2 |
Arsenic | mg/L | 252 | 0.00 | 0.001 | 0.071 | 21 | 8.3 | 0.01 |
Barium | mg/L | 454 | 0.07 | 0.00 | 7.62 | 3 | 0.7 | 2 |
Cadmium | mg/L | 64 | 0.00 | 0.001 | 0.043 | 2 | 3.1 | 0.005 |
Calcium | mg/L | 578 | 26.05 | 0.25 | 540.35 | - | - | - |
Chromium | mg/L | 64 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 666 | 0.02 | 0.00 | 68.72 | 5 | 0.8 | 1.0,1.3 |
Iron | mg/L | 996 | 0.1 | 0.1 | 95.1 | 177 | 17.8 | 0.3 |
Lead-1st draw |
mg/L | 433 | 0.00 | 0.001 | 0.273 | 31 | 7.2 | 0.015 |
Lead-Running | mg/L | 443 | 0.003 | 0.001 | 0.307 | 14 | 3.2 | 0.015 |
Magnesium | mg/L | 578 | 8.25 | 0.05 | 104.09 | - | - | - |
Manganese | mg/L | 958 | 0.01 | 0.01 | 7.34 | 172 | 18.0 | 0.05 |
Mercury | mg/L | 79 | 0.00 | 0.000 | 0.002 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 64 | 0.01 | 0.005 | 0.115 | - | - | - |
Sodium | mg/L | 6 | 27.17 | 1.34 | 127.95 | - | - | - |
Zinc | mg/L | 64 | 0.01 | 0.005 | 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 - 4:00 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