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Mifflin

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

Mifflin County

12/4/2007 - 6/3/2016, 85 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
79 0.0 0.0 200.5 33 41.8 0
E.
Coli
MPN/100
mL
79 0.0 0.0 200.5 9 11.4 0
pH
-
46 7.7 6.5 8.1 0 0.0 6.5-8.5
Total
Dissolved
Solids
mg/L 48 216.5 20.0 937.0 6 12.5 500
Corrosivity
Index*

-
23 0.2 -3.3 0.7 14 60.9 -
Hardness mg/L 26 115.7 1.5 524.7 - - -
Nitrate+Nitrite
N
mg/L 34 0.6 0.2 11.5 2 5.9 10
Chloride mg/L 3 209.9 5.0 224.9 0 0.0 250
Sulfate mg/L 4 23.9 10.0 50.6 0 0.0 250
Aluminum mg/L 0 - - - - - 0.05-0.2
Arsenic mg/L 6 0.00 0.003 0.003 0 0.0 0.01
Barium mg/L 4 0.04 0.00 0.14 0 0.0 2
Cadmium mg/L 4 0.00 0.001 0.001 0 0.0 0.005
Calcium mg/L 21 32.50 0.50 128.16 - - -
Chromium mg/L 4 0.0 0.003 0.005 0 0.0 0.1
Copper mg/L 25 0.01 0.01 0.13 0 0.0 1.0,1.3
Iron mg/L 25 0.2 0.1 10.2 11 44.0 0.3
Lead-1st
draw
mg/L 9 0.00 0.003 0.036 1 11.1 0.015
Lead-Running mg/L 10 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 21 9.14 0.05 48.34 - - -
Manganese mg/L 22 0.01 0.01 0.57 8 36.4 0.05
Mercury mg/L 4 0.00 0.001 0.001 0 0.0 0.002
Nickel mg/L 4 0.01 0.005 0.005 - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 4 0.01 0.01 0.01 0 0.0 5

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