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

Pennsylvania

1/4/2007 - 6/30/2020, 13,149 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
12256 0.0 0.0 2419.6 5698 46.5 0
E.
Coli
MPN/100
mL
12256 0.0 0.0 1046.2 1462 11.9 0
pH
-
10409 7.5 2.7 11.1 1455 14.0 6.5-8.5
Total
Dissolved
Solids
mg/L 10346 188.0 10.0 9220.0 601 5.8 500
Corrosivity
Index*

-
4485 -0.6 -7.6 3.1 2964 66.1 -
Hardness mg/L 4714 87.9 0.8 1823.6 - - -
Nitrate+Nitrite
N
mg/L 4248 0.9 0.2 217.7 188 4.4 10
Chloride mg/L 1698 7.4 1.0 2361.2 36 2.1 250
Sulfate mg/L 632 15.7 1.0 1422.4 29 4.6 250
Aluminum mg/L 425 0.0 0.0 31.4 75 17.6 0.05-0.2
Arsenic mg/L 2662 0.00 0.001 0.354 164 6.2 0.01
Barium mg/L 3020 0.06 0.00 11.54 11 0.4 2
Cadmium mg/L 881 0.00 0.001 0.043 4 0.5 0.005
Calcium mg/L 4297 22.33 0.25 540.35 - - -
Chromium mg/L 881 0.0 0.001 0.013 0 0.0 0.1
Copper mg/L 5154 0.02 0.01 68.72 50 1.0 1.0,1.3
Iron mg/L 4171 0.1 0.1 225.3 721 17.3 0.3
Lead-1st
draw
mg/L 2658 0.00 0.003 0.823 321 12.1 0.015
Lead-Running mg/L 3497 0.003 0.003 4.590 106 3.0 0.015
Magnesium mg/L 4295 5.56 0.05 159.98 - - -
Manganese mg/L 4125 0.01 0.01 60.68 923 22.4 0.05
Mercury mg/L 1015 0.00 0.000 0.002 0 0.0 0.002
Nickel mg/L 883 0.01 0.003 0.115 - - -
Sodium mg/L 117 6.88 0.25 77.34 - - -
Zinc mg/L 881 0.01 0.01 18.70 2 0.2 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