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Clarion

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

Clarion County

8/29/2007 - 3/2/2018, 24 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
22 15.0 0.0 200.5 14 63.6 0
E.
Coli
MPN/100
mL
22 0.0 0.0 27.1 7 31.8 0
pH
-
22 6.4 5.1 11.1 12 54.5 6.5-8.5
Total
Dissolved
Solids
mg/L 22 92.0 26.0 621.0 1 4.5 500
Corrosivity
Index*

-
11 -2.1 -5.7 3.1 11 100.0 -
Hardness mg/L 11 48.6 0.8 418.5 - - -
Nitrate+Nitrite
N
mg/L 10 1.6 0.2 9.6 0 0.0 10
Chloride mg/L 3 2.0 2.0 115.9 0 0.0 250
Sulfate mg/L 2 129.5 10.0 249.0 0 0.0 250
Aluminum mg/L 2 0.1 0.0 0.2 1 50.0 0.05-0.2
Arsenic mg/L 10 0.00 0.001 0.003 0 0.0 0.01
Barium mg/L 11 0.08 0.00 0.44 0 0.0 2
Cadmium mg/L 3 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 11 11.27 0.25 109.88 - - -
Chromium mg/L 3 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 12 0.01 0.01 8.66 1 8.3 1.0,1.3
Iron mg/L 8 0.0 0.0 0.2 0 0.0 0.3
Lead-1st
draw
mg/L 3 0.00 0.003 0.077 1 33.3 0.015
Lead-Running mg/L 10 0.005 0.003 0.186 2 20.0 0.015
Magnesium mg/L 5 0.10 0.05 4.74 - - -
Manganese mg/L 9 2.96 0.01 35.00 6 66.7 0.05
Mercury mg/L 6 1.88 0.000 52.267 3 50.0 0.002
Nickel mg/L 3 0.01 0.005 0.011 - - -
Sodium mg/L 3 2.86 0.31 4.70 - - -
Zinc mg/L 7 0.01 0.00 0.10 0 0.0 5

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