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

Tioga County

3/17/2008 - 6/23/2020, 91 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
83 1.0 0.0 200.5 42 50.6 0
E.
Coli
MPN/100
mL
83 0.0 0.0 83.1 11 13.3 0
pH
-
82 7.8 6.2 9.1 7 8.5 6.5-8.5
Total
Dissolved
Solids
mg/L 81 184.0 20.0 1464.0 5 6.2 500
Corrosivity
Index*

-
28 0.1 -2.4 0.9 13 46.4 -
Hardness mg/L 36 93.8 0.8 229.3 - - -
Nitrate+Nitrite
N
mg/L 24 0.5 0.2 8.2 0 0.0 10
Chloride mg/L 33 7.8 1.0 789.9 1 3.0 250
Sulfate mg/L 6 14.2 3.0 37.9 0 0.0 250
Aluminum mg/L 4 0.1 0.0 0.1 2 50.0 0.05-0.2
Arsenic mg/L 26 0.00 0.001 0.085 3 11.5 0.01
Barium mg/L 41 0.12 0.00 2.12 1 2.4 2
Cadmium mg/L 10 0.00 0.001 0.004 0 0.0 0.005
Calcium mg/L 33 28.68 0.25 68.42 - - -
Chromium mg/L 10 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 38 0.01 0.01 0.11 0 0.0 1.0,1.3
Iron mg/L 37 0.2 0.1 18.0 11 29.7 0.3
Lead-1st
draw
mg/L 9 0.00 0.003 0.006 0 0.0 0.015
Lead-Running mg/L 22 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 33 5.58 0.05 23.75 - - -
Manganese mg/L 37 0.01 0.01 1.78 15 40.5 0.05
Mercury mg/L 9 0.00 0.001 0.001 0 0.0 0.002
Nickel mg/L 10 0.01 0.003 0.005 - - -
Sodium mg/L 5 6.75 0.34 66.19 - - -
Zinc mg/L 10 0.02 0.01 0.05 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