Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Lehigh County
9/13/2007 - 6/30/2020, 239 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 |
223 | 0.0 | 0.0 | 200.5 | 77 | 34.5 | 0 |
E. Coli |
MPN/100 mL |
223 | 0.0 | 0.0 | 11.1 | 9 | 4.0 | 0 |
pH | - |
205 | 7.4 | 5.9 | 8.9 | 22 | 10.7 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 205 | 190.0 | 46.0 | 668.0 | 4 | 2.0 | 500 |
Corrosivity Index* |
- |
114 | -0.9 | -4.6 | 1.3 | 74 | 64.9 | - |
Hardness | mg/L | 120 | 105.2 | 0.8 | 340.0 | - | - | - |
Nitrate+Nitrite N |
mg/L | 117 | 3.1 | 0.2 | 27.7 | 4 | 3.4 | 10 |
Chloride | mg/L | 10 | 72.8 | 7.0 | 145.0 | 0 | 0.0 | 250 |
Sulfate | mg/L | 4 | 17.7 | 6.1 | 35.3 | 0 | 0.0 | 250 |
Aluminum | mg/L | 3 | 0.0 | 0.0 | 0.1 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 63 | 0.00 | 0.001 | 0.006 | 0 | 0.0 | 0.01 |
Barium | mg/L | 52 | 0.01 | 0.00 | 0.23 | 0 | 0.0 | 2 |
Cadmium | mg/L | 11 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 113 | 25.77 | 0.25 | 78.56 | - | - | - |
Chromium | mg/L | 11 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 126 | 0.03 | 0.01 | 1.35 | 1 | 0.8 | 1.0,1.3 |
Iron | mg/L | 77 | 0.1 | 0.1 | 0.7 | 3 | 3.9 | 0.3 |
Lead-1st draw |
mg/L | 95 | 0.00 | 0.003 | 0.047 | 4 | 4.2 | 0.015 |
Lead-Running | mg/L | 96 | 0.003 | 0.003 | 0.006 | 0 | 0.0 | 0.015 |
Magnesium | mg/L | 113 | 6.48 | 0.05 | 38.99 | - | - | - |
Manganese | mg/L | 76 | 0.01 | 0.01 | 1.18 | 19 | 25.0 | 0.05 |
Mercury | mg/L | 14 | 0.00 | 0.001 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 11 | 0.01 | 0.005 | 0.010 | - | - | - |
Sodium | mg/L | 0 | - | - | - | - | - | - |
Zinc | mg/L | 11 | 0.01 | 0.01 | 0.03 | 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