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Montour

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

Montour County

10/4/2007 - 6/29/2018, 81 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
78 0.0 0.0 200.5 31 39.7 0
E.
Coli
MPN/100
mL
78 0.0 0.0 8.7 3 3.8 0
pH
-
71 7.7 6.3 9.4 8 11.3 6.5-8.5
Total
Dissolved
Solids
mg/L 71 200.0 51.0 1662.0 5 7.0 500
Corrosivity
Index*

-
58 -1.0 -3.6 0.9 42 72.4 -
Hardness mg/L 59 58.7 0.8 1131.0 - - -
Nitrate+Nitrite
N
mg/L 53 0.5 0.2 12.3 1 1.9 10
Chloride mg/L 0 - - - - - 250
Sulfate mg/L 4 657.5 30.8 947.3 3 75.0 250
Aluminum mg/L 0 - - - - - 0.05-0.2
Arsenic mg/L 50 0.00 0.003 0.004 0 0.0 0.01
Barium mg/L 50 0.02 0.00 0.29 0 0.0 2
Cadmium mg/L 1 0.00 0.001 0.001 0 0.0 0.005
Calcium mg/L 58 13.00 0.25 294.13 - - -
Chromium mg/L 1 0.0 0.005 0.005 0 0.0 0.1
Copper mg/L 57 0.07 0.01 4.20 3 5.3 1.0,1.3
Iron mg/L 58 0.0 0.0 1.5 3 5.2 0.3
Lead-1st
draw
mg/L 3 0.01 0.003 0.006 0 0.0 0.015
Lead-Running mg/L 53 0.003 0.003 0.083 3 5.7 0.015
Magnesium mg/L 6 6.31 0.18 11.77 - - -
Manganese mg/L 58 3.13 0.01 96.30 40 69.0 0.05
Mercury mg/L 5 0.06 0.001 0.480 4 80.0 0.002
Nickel mg/L 1 0.01 0.005 0.005 - - -
Sodium mg/L 4 0.11 0.01 0.15 - - -
Zinc mg/L 53 0.00 0.00 0.03 0 0.0 5

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