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Clarion

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

Clarion County

8/29/2007 - 12/16/2015, 13 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
11 0.0 0.0 200.5 5 45.5 0
E.
Coli
MPN/100
mL
11 0.0 0.0 27.1 3 27.3 0
pH
-
11 7.2 5.3 11.1 4 36.4 6.5-8.5
Total
Dissolved
Solids
mg/L 11 146.0 26.0 401.0 0 0.0 500
Corrosivity
Index*

-
2 0.5 -2.1 3.1 2 100.0 -
Hardness mg/L 2 30.6 1.5 59.8 - - -
Nitrate+Nitrite
N
mg/L 1 3.6 3.6 3.6 0 0.0 10
Chloride mg/L 2 59.0 2.0 115.9 0 0.0 250
Sulfate mg/L 1 10.0 10.0 10.0 0 0.0 250
Aluminum mg/L 1 0.0 0.0 0.0 0 0.0 0.05-0.2
Arsenic mg/L 3 0.00 0.001 0.003 0 0.0 0.01
Barium mg/L 4 0.15 0.06 0.44 0 0.0 2
Cadmium mg/L 3 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 2 12.15 0.50 23.80 - - -
Chromium mg/L 3 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 5 0.01 0.01 0.08 0 0.0 1.0,1.3
Iron mg/L 2 0.2 0.1 0.2 0 0.0 0.3
Lead-1st
draw
mg/L 0 - - - - - 0.015
Lead-Running mg/L 3 0.008 0.006 0.008 0 0.0 0.015
Magnesium mg/L 2 0.08 0.05 0.10 - - -
Manganese mg/L 3 0.01 0.01 0.25 1 33.3 0.05
Mercury mg/L 3 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 3 0.01 0.005 0.011 - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 3 0.10 0.01 0.10 0 0.0 5

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