Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Armstrong County
11/15/2007 - 8/23/2021, 99 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 |
97 | 36.4 | 0.0 | 200.5 | 74 | 76.3 | 0 |
E. Coli |
MPN/100 mL |
97 | 0.0 | 0.0 | 200.5 | 26 | 26.8 | 0 |
pH | - |
81 | 7.4 | 5.4 | 8.7 | 15 | 18.5 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 81 | 182.0 | 20.0 | 1850.0 | 8 | 9.9 | 500 |
Corrosivity Index* |
- |
26 | -0.5 | -2.8 | 0.8 | 18 | 69.2 | - |
Hardness | mg/L | 30 | 100.2 | 1.7 | 607.4 | - | - | - |
Nitrate+Nitrite N |
mg/L | 30 | 0.6 | 0.2 | 6.8 | 0 | 0.0 | 10 |
Chloride | mg/L | 23 | 6.5 | 2.0 | 349.9 | 1 | 4.3 | 250 |
Sulfate | mg/L | 10 | 37.6 | 3.0 | 506.9 | 1 | 10.0 | 250 |
Aluminum | mg/L | 10 | 0.0 | 0.0 | 1.0 | 4 | 40.0 | 0.05-0.2 |
Arsenic | mg/L | 9 | 0.00 | 0.003 | 0.010 | 0 | 0.0 | 0.01 |
Barium | mg/L | 31 | 0.05 | 0.01 | 1.46 | 0 | 0.0 | 2 |
Cadmium | mg/L | 5 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 25 | 22.69 | 0.50 | 105.73 | - | - | - |
Chromium | mg/L | 5 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 31 | 0.01 | 0.01 | 0.23 | 0 | 0.0 | 1.0,1.3 |
Iron | mg/L | 27 | 0.2 | 0.1 | 2.5 | 7 | 25.9 | 0.3 |
Lead-1st draw |
mg/L | 18 | 0.00 | 0.003 | 0.019 | 1 | 5.6 | 0.015 |
Lead-Running | mg/L | 14 | 0.003 | 0.003 | 0.006 | 0 | 0.0 | 0.015 |
Magnesium | mg/L | 25 | 6.61 | 0.10 | 15.27 | - | - | - |
Manganese | mg/L | 32 | 0.01 | 0.01 | 6.59 | 11 | 34.4 | 0.05 |
Mercury | mg/L | 5 | 0.00 | 0.001 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 5 | 0.01 | 0.003 | 0.005 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 5 | 0.01 | 0.01 | 0.01 | 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