Summary of Drinking Water Samples Tested by the Penn State Agricultural Analytical Services Laboratory

Pennsylvania

1/4/2007 - 7/12/2022, 17,090 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
15986 0.0 0.0 2419.6 7211 45.1 0
E.
Coli
MPN/100
mL
15986 0.0 0.0 1046.2 1819 11.4 0
pH
-
13271 7.5 2.7 11.4 1952 14.7 6.5-8.5
Total
Dissolved
Solids
mg/L 13038 189.0 10.0 9220.0 733 5.6 500
Corrosivity
Index*

-
5682 -0.6 -7.6 3.1 3723 65.5 -
Hardness mg/L 5995 88.1 0.8 1823.6 - - -
Nitrate+Nitrite
N
mg/L 5623 0.9 0.2 217.7 230 4.1 10
Chloride mg/L 1865 7.5 1.0 2361.2 41 2.2 250
Sulfate mg/L 813 15.0 1.0 1636.6 34 4.2 250
Aluminum mg/L 507 0.0 0.0 31.4 88 17.4 0.05-0.2
Arsenic mg/L 3541 0.00 0.001 0.354 213 6.0 0.01
Barium mg/L 3485 0.05 0.00 13.12 14 0.4 2
Cadmium mg/L 1099 0.00 0.001 0.043 4 0.4 0.005
Calcium mg/L 5470 22.29 0.25 540.35 - - -
Chromium mg/L 1099 0.0 0.001 0.050 0 0.0 0.1
Copper mg/L 6477 0.02 0.01 68.72 112 1.7 1.0,1.3
Iron mg/L 5437 0.1 0.0 225.3 872 16.0 0.3
Lead-1st
draw
mg/L 3252 0.00 0.003 0.823 357 11.0 0.015
Lead-Running mg/L 4623 0.003 0.003 4.590 164 3.5 0.015
Magnesium mg/L 4875 5.59 0.05 159.98 - - -
Manganese mg/L 5401 0.01 0.01 120.53 1636 30.3 0.05
Mercury mg/L 1768 0.00 0.000 23.929 624 35.3 0.002
Nickel mg/L 988 0.01 0.003 0.240 - - -
Sodium mg/L 758 0.01 0.01 77.34 - - -
Zinc mg/L 1529 0.01 0.00 18.70 2 0.1 5

*For corrosivity index, failure criteria based on less than -0.5 or greater than 0.5

Ag Analytical Services Lab

Address

111 Ag Analytical Srvcs Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM

Ag Analytical Services Lab

Address

111 Ag Analytical Srvcs Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM