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

Centre County

6/20/2007 - 7/9/2020, 1,515 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
1349 0.0 0.0 2419.6 611 45.3 0
E.
Coli
MPN/100
mL
1349 0.0 0.0 344.1 190 14.1 0
pH
-
887 7.7 5.0 9.8 83 9.4 6.5-8.5
Total
Dissolved
Solids
mg/L 871 246.0 20.0 2735.0 44 5.1 500
Corrosivity
Index*

-
369 0.1 -5.5 2.1 266 72.1 -
Hardness mg/L 453 115.4 0.8 1777.9 - - -
Nitrate+Nitrite
N
mg/L 413 1.3 0.2 33.2 14 3.4 10
Chloride mg/L 75 5.8 1.0 158.4 0 0.0 250
Sulfate mg/L 93 13.7 1.0 113.1 0 0.0 250
Aluminum mg/L 45 0.0 0.0 0.5 7 15.6 0.05-0.2
Arsenic mg/L 195 0.00 0.001 0.071 17 8.7 0.01
Barium mg/L 112 0.03 0.00 0.77 0 0.0 2
Cadmium mg/L 47 0.00 0.001 0.043 2 4.3 0.005
Calcium mg/L 360 26.58 0.25 540.35 - - -
Chromium mg/L 47 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 316 0.03 0.01 68.72 7 2.2 1.0,1.3
Iron mg/L 399 0.1 0.0 95.1 58 14.5 0.3
Lead-1st
draw
mg/L 162 0.01 0.003 1.813 29 17.9 0.015
Lead-Running mg/L 192 0.003 0.003 0.103 12 6.3 0.015
Magnesium mg/L 252 2.19 0.05 104.09 - - -
Manganese mg/L 355 0.01 0.00 44.03 143 40.3 0.05
Mercury mg/L 209 0.05 0.000 22.612 184 88.0 0.002
Nickel mg/L 71 1.29 0.005 29.626 - - -
Sodium mg/L 124 0.01 0.01 0.36 - - -
Zinc mg/L 124 0.00 0.00 0.15 0 0.0 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