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

Pennsylvania

1/4/2007 - 7/13/2021, 15,061 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
14067 0.0 0.0 2419.6 6424 45.7 0
E.
Coli
MPN/100
mL
14067 0.0 0.0 1046.2 1602 11.4 0
pH
-
11841 7.5 2.7 11.1 1685 14.2 6.5-8.5
Total
Dissolved
Solids
mg/L 11639 188.0 10.0 9220.0 666 5.7 500
Corrosivity
Index*

-
5076 -0.6 -7.6 3.1 3340 65.8 -
Hardness mg/L 5345 87.4 0.8 1823.6 - - -
Nitrate+Nitrite
N
mg/L 4903 0.9 0.2 217.7 204 4.2 10
Chloride mg/L 1777 7.4 1.0 2361.2 38 2.1 250
Sulfate mg/L 721 15.8 1.0 1422.4 31 4.3 250
Aluminum mg/L 461 0.0 0.0 31.4 82 17.8 0.05-0.2
Arsenic mg/L 3079 0.00 0.001 0.354 188 6.1 0.01
Barium mg/L 3264 0.05 0.00 11.54 12 0.4 2
Cadmium mg/L 986 0.00 0.001 0.043 4 0.4 0.005
Calcium mg/L 4877 22.06 0.25 540.35 - - -
Chromium mg/L 986 0.0 0.001 0.015 0 0.0 0.1
Copper mg/L 5856 0.02 0.01 68.72 55 0.9 1.0,1.3
Iron mg/L 4715 0.1 0.1 225.3 836 17.7 0.3
Lead-1st
draw
mg/L 3139 0.00 0.003 0.823 350 11.2 0.015
Lead-Running mg/L 4002 0.003 0.003 4.590 132 3.3 0.015
Magnesium mg/L 4875 5.59 0.05 159.98 - - -
Manganese mg/L 4808 0.01 0.01 60.68 1091 22.7 0.05
Mercury mg/L 1144 0.00 0.000 0.002 0 0.0 0.002
Nickel mg/L 988 0.01 0.003 0.240 - - -
Sodium mg/L 117 6.88 0.25 77.34 - - -
Zinc mg/L 986 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