Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Westmoreland County
7/31/2007 - 6/30/2020, 558 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 |
540 | 1.0 | 0.0 | 2419.6 | 282 | 52.2 | 0 |
E. Coli |
MPN/100 mL |
540 | 0.0 | 0.0 | 1046.2 | 77 | 14.3 | 0 |
pH | - |
497 | 7.7 | 2.7 | 9.7 | 77 | 15.5 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 493 | 262.0 | 10.0 | 3246.0 | 55 | 11.2 | 500 |
Corrosivity Index* |
- |
261 | -0.1 | -7.6 | 1.1 | 171 | 65.5 | - |
Hardness | mg/L | 274 | 104.1 | 0.8 | 743.1 | - | - | - |
Nitrate+Nitrite N |
mg/L | 96 | 0.5 | 0.2 | 7.0 | 0 | 0.0 | 10 |
Chloride | mg/L | 97 | 17.0 | 1.1 | 1359.3 | 1 | 1.0 | 250 |
Sulfate | mg/L | 42 | 23.9 | 1.0 | 1422.4 | 4 | 9.5 | 250 |
Aluminum | mg/L | 25 | 0.0 | 0.0 | 31.4 | 3 | 12.0 | 0.05-0.2 |
Arsenic | mg/L | 64 | 0.00 | 0.001 | 0.013 | 2 | 3.1 | 0.01 |
Barium | mg/L | 129 | 0.10 | 0.00 | 0.91 | 0 | 0.0 | 2 |
Cadmium | mg/L | 39 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 261 | 28.49 | 0.25 | 188.65 | - | - | - |
Chromium | mg/L | 39 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 304 | 0.01 | 0.01 | 2.37 | 1 | 0.3 | 1.0,1.3 |
Iron | mg/L | 277 | 0.2 | 0.1 | 34.1 | 44 | 15.9 | 0.3 |
Lead-1st draw |
mg/L | 86 | 0.00 | 0.003 | 0.084 | 7 | 8.1 | 0.015 |
Lead-Running | mg/L | 117 | 0.003 | 0.003 | 0.349 | 5 | 4.3 | 0.015 |
Magnesium | mg/L | 261 | 8.10 | 0.05 | 78.13 | - | - | - |
Manganese | mg/L | 284 | 0.01 | 0.01 | 60.68 | 75 | 26.4 | 0.05 |
Mercury | mg/L | 45 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 39 | 0.01 | 0.003 | 0.055 | - | - | - |
Sodium | mg/L | 1 | 17.11 | 17.11 | 17.11 | - | - | - |
Zinc | mg/L | 39 | 0.01 | 0.01 | 1.63 | 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