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Tioga

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

Tioga County

3/17/2008 - 6/26/2018, 77 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
71 1.0 0.0 200.5 37 52.1 0
E.
Coli
MPN/100
mL
71 0.0 0.0 83.1 11 15.5 0
pH
-
70 7.8 6.2 9.1 7 10.0 6.5-8.5
Total
Dissolved
Solids
mg/L 69 184.0 20.0 659.0 3 4.3 500
Corrosivity
Index*

-
23 0.1 -2.4 0.9 11 47.8 -
Hardness mg/L 30 93.8 0.8 229.3 - - -
Nitrate+Nitrite
N
mg/L 19 0.5 0.2 4.4 0 0.0 10
Chloride mg/L 29 7.9 1.0 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 22 0.00 0.001 0.085 3 13.6 0.01
Barium mg/L 36 0.11 0.00 2.12 1 2.8 2
Cadmium mg/L 8 0.00 0.001 0.004 0 0.0 0.005
Calcium mg/L 28 29.53 0.25 68.42 - - -
Chromium mg/L 8 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 27 0.01 0.01 0.21 0 0.0 1.0,1.3
Iron mg/L 36 0.2 0.0 18.0 6 16.7 0.3
Lead-1st
draw
mg/L 6 0.00 0.003 0.006 0 0.0 0.015
Lead-Running mg/L 18 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 22 6.29 0.10 23.75 - - -
Manganese mg/L 34 0.03 0.01 14.71 16 47.1 0.05
Mercury mg/L 9 0.00 0.001 3.187 4 44.4 0.002
Nickel mg/L 6 0.01 0.003 0.005 - - -
Sodium mg/L 9 1.78 0.01 66.19 - - -
Zinc mg/L 10 0.01 0.00 0.05 0 0.0 5

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