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Elk

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

Elk County

8/9/2007 - 7/22/2016, 40 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
40 3.1 0.0 200.5 25 62.5 0
E.
Coli
MPN/100
mL
40 0.0 0.0 56.0 5 12.5 0
pH
-
36 6.8 5.1 8.1 12 33.3 6.5-8.5
Total
Dissolved
Solids
mg/L 36 81.0 20.0 1104.0 3 8.3 500
Corrosivity
Index*

-
23 -2.4 -6.0 0.7 20 87.0 -
Hardness mg/L 19 30.8 0.8 289.7 - - -
Nitrate+Nitrite
N
mg/L 22 0.5 0.2 4.3 0 0.0 10
Chloride mg/L 14 5.0 2.0 480.2 1 7.1 250
Sulfate mg/L 6 10.0 10.0 23.9 0 0.0 250
Aluminum mg/L 5 0.0 0.0 0.1 2 40.0 0.05-0.2
Arsenic mg/L 21 0.00 0.001 0.004 0 0.0 0.01
Barium mg/L 24 0.05 0.00 1.98 0 0.0 2
Cadmium mg/L 0 - - - - - 0.005
Calcium mg/L 18 7.72 0.25 87.16 - - -
Chromium mg/L 0 - - - - - 0.1
Copper mg/L 18 0.01 0.01 0.31 0 0.0 1.0,1.3
Iron mg/L 8 0.1 0.1 16.7 3 37.5 0.3
Lead-1st
draw
mg/L 11 0.00 0.003 0.022 1 9.1 0.015
Lead-Running mg/L 15 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 18 2.17 0.05 20.80 - - -
Manganese mg/L 8 0.03 0.01 1.91 2 25.0 0.05
Mercury mg/L 0 - - - - - 0.002
Nickel mg/L 0 - - - - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 0 - - - - - 5

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