Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory
Lehigh County
9/13/2007 - 6/22/2023, 332 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 |
313 | 0.0 | 0.0 | 200.5 | 105 | 33.5 | 0 |
E. Coli |
MPN/100 mL |
313 | 0.0 | 0.0 | 11.1 | 11 | 3.5 | 0 |
pH | - |
282 | 7.4 | 5.9 | 8.9 | 33 | 11.7 | 6.5-8.5 |
Total Dissolved Solids |
mg/L | 281 | 191.0 | 20.0 | 679.0 | 5 | 1.8 | 500 |
Corrosivity Index* |
- |
148 | -1.0 | -4.6 | 1.3 | 96 | 64.9 | - |
Hardness | mg/L | 156 | 103.1 | 0.8 | 340.0 | - | - | - |
Nitrate+Nitrite N |
mg/L | 149 | 2.9 | 0.2 | 27.7 | 5 | 3.4 | 10 |
Chloride | mg/L | 13 | 45.6 | 7.0 | 145.0 | 0 | 0.0 | 250 |
Sulfate | mg/L | 9 | 25.3 | 4.5 | 76.7 | 0 | 0.0 | 250 |
Aluminum | mg/L | 3 | 0.0 | 0.0 | 0.1 | 0 | 0.0 | 0.05-0.2 |
Arsenic | mg/L | 83 | 0.00 | 0.001 | 0.006 | 0 | 0.0 | 0.01 |
Barium | mg/L | 60 | 0.01 | 0.00 | 0.23 | 0 | 0.0 | 2 |
Cadmium | mg/L | 17 | 0.00 | 0.001 | 0.002 | 0 | 0.0 | 0.005 |
Calcium | mg/L | 146 | 26.05 | 0.25 | 78.56 | - | - | - |
Chromium | mg/L | 17 | 0.0 | 0.001 | 0.005 | 0 | 0.0 | 0.1 |
Copper | mg/L | 166 | 0.02 | 0.01 | 1.35 | 1 | 0.6 | 1.0,1.3 |
Iron | mg/L | 111 | 0.1 | 0.1 | 0.7 | 4 | 3.6 | 0.3 |
Lead-1st draw |
mg/L | 125 | 0.00 | 0.002 | 2.039 | 5 | 4.0 | 0.015 |
Lead-Running | mg/L | 122 | 0.003 | 0.001 | 0.006 | 0 | 0.0 | 0.015 |
Magnesium | mg/L | 146 | 6.59 | 0.05 | 38.99 | - | - | - |
Manganese | mg/L | 110 | 0.01 | 0.01 | 1.18 | 23 | 20.9 | 0.05 |
Mercury | mg/L | 20 | 0.00 | 0.001 | 0.001 | 0 | 0.0 | 0.002 |
Nickel | mg/L | 17 | 0.01 | 0.005 | 0.010 | - | - | - |
Sodium | mg/L | 6 | 14.86 | 6.88 | 57.58 | - | - | - |
Zinc | mg/L | 17 | 0.01 | 0.005 | 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 - 4:00 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