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Tioga

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

Tioga County

3/17/2008 - 5/16/2017, 69 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
64 1.0 0.0 200.5 35 54.7 0
E.
Coli
MPN/100
mL
64 0.0 0.0 83.1 10 15.6 0
pH
-
62 7.8 6.2 9.1 7 11.3 6.5-8.5
Total
Dissolved
Solids
mg/L 61 192.5 20.0 659.0 3 4.9 500
Corrosivity
Index*

-
18 0.3 -2.4 0.9 9 50.0 -
Hardness mg/L 25 96.1 1.7 229.3 - - -
Nitrate+Nitrite
N
mg/L 17 0.5 0.3 4.4 0 0.0 10
Chloride mg/L 27 7.9 2.0 83.3 0 0.0 250
Sulfate mg/L 5 16.8 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 18 0.00 0.001 0.029 1 5.6 0.01
Barium mg/L 31 0.12 0.00 0.66 0 0.0 2
Cadmium mg/L 7 0.00 0.001 0.004 0 0.0 0.005
Calcium mg/L 23 30.37 0.50 68.42 - - -
Chromium mg/L 7 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 25 0.01 0.01 0.11 0 0.0 1.0,1.3
Iron mg/L 30 0.2 0.0 18.0 6 20.0 0.3
Lead-1st
draw
mg/L 5 0.00 0.003 0.006 0 0.0 0.015
Lead-Running mg/L 16 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 22 6.29 0.10 23.75 - - -
Manganese mg/L 29 0.01 0.01 3.92 12 41.4 0.05
Mercury mg/L 6 0.00 0.001 0.058 1 16.7 0.002
Nickel mg/L 6 0.01 0.003 0.005 - - -
Sodium mg/L 6 6.73 0.05 66.19 - - -
Zinc mg/L 7 0.02 0.00 0.05 0 0.0 5

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