Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Westmoreland County
7/31/2007 - 6/22/2023, 687 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 |
666 | 1.0 | 0.0 | 200.5 | 347 | 52.1 | 0 |
E. Coli |
MPN/100 mL |
666 | 0.0 | 0.0 | 200.5 | 98 | 14.7 | 0 |
pH | - |
608 | 7.6 | 2.7 | 9.7 | 94 | 15.5 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 602 | 263.0 | 10.0 | 3246.0 | 71 | 11.8 | 500 |
Corrosivity Index* |
- |
323 | -0.1 | -4.8 | 1.1 | 207 | 64.1 | - |
Hardness | mg/L | 342 | 101.5 | 0.8 | 854.1 | - | - | - |
Nitrate+Nitrite N |
mg/L | 117 | 0.5 | 0.2 | 7.0 | 0 | 0.0 | 10 |
Chloride | mg/L | 122 | 14.7 | 1.0 | 1359.3 | 1 | 0.8 | 250 |
Sulfate | mg/L | 62 | 16.0 | 1.0 | 1422.4 | 4 | 6.5 | 250 |
Aluminum | mg/L | 29 | 0.0 | 0.0 | 31.4 | 5 | 17.2 | 0.05-0.2 |
Arsenic | mg/L | 93 | 0.00 | 0.001 | 0.025 | 3 | 3.2 | 0.01 |
Barium | mg/L | 159 | 0.09 | 0.00 | 0.91 | 0 | 0.0 | 2 |
Cadmium | mg/L | 44 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 323 | 27.01 | 0.25 | 232.93 | - | - | - |
Chromium | mg/L | 44 | 0.0 | 0.001 | 0.006 | 0 | 0.0 | 0.1 |
Copper | mg/L | 371 | 0.01 | 0.00 | 2.45 | 3 | 0.8 | 1.0,1.3 |
Iron | mg/L | 342 | 0.2 | 0.1 | 34.1 | 56 | 16.4 | 0.3 |
Lead-1st draw |
mg/L | 128 | 0.00 | 0.001 | 0.084 | 10 | 7.8 | 0.015 |
Lead-Running | mg/L | 156 | 0.003 | 0.001 | 0.349 | 6 | 3.8 | 0.015 |
Magnesium | mg/L | 323 | 7.65 | 0.05 | 78.13 | - | - | - |
Manganese | mg/L | 348 | 0.01 | 0.01 | 60.68 | 94 | 27.0 | 0.05 |
Mercury | mg/L | 55 | 0.00 | 0.000 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 44 | 0.01 | 0.003 | 0.055 | - | - | - |
Sodium | mg/L | 5 | 17.11 | 8.06 | 83.59 | - | - | - |
Zinc | mg/L | 44 | 0.01 | 0.005 | 4.94 | 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