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Philadelphia

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

Philadelphia County

2/6/2008 - 6/30/2016, 33 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
29 53.1 0.0 253.8 23 79.3 0
E.
Coli
MPN/100
mL
29 0.0 0.0 200.5 14 48.3 0
pH
-
15 7.3 5.9 7.8 2 13.3 6.5-8.5
Total
Dissolved
Solids
mg/L 14 224.5 20.0 469.0 0 0.0 500
Corrosivity
Index*

-
3 -1.0 -1.4 -0.6 3 100.0 -
Hardness mg/L 4 109.2 89.7 124.5 - - -
Nitrate+Nitrite
N
mg/L 3 1.0 0.2 3.6 0 0.0 10
Chloride mg/L 5 57.0 3.2 84.0 0 0.0 250
Sulfate mg/L 0 - - - - - 250
Aluminum mg/L 0 - - - - - 0.05-0.2
Arsenic mg/L 7 0.00 0.003 0.003 0 0.0 0.01
Barium mg/L 7 0.03 0.00 0.15 0 0.0 2
Cadmium mg/L 7 0.00 0.001 0.001 0 0.0 0.005
Calcium mg/L 3 31.72 25.49 34.26 - - -
Chromium mg/L 7 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 10 0.02 0.01 1.09 0 0.0 1.0,1.3
Iron mg/L 4 0.1 0.1 0.2 0 0.0 0.3
Lead-1st
draw
mg/L 6 0.00 0.003 0.006 0 0.0 0.015
Lead-Running mg/L 11 0.003 0.003 0.012 0 0.0 0.015
Magnesium mg/L 3 8.78 6.33 9.47 - - -
Manganese mg/L 4 0.01 0.01 0.02 0 0.0 0.05
Mercury mg/L 7 0.00 0.001 0.001 0 0.0 0.002
Nickel mg/L 7 0.01 0.005 0.008 - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 7 0.02 0.01 0.14 0 0.0 5

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