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Erie

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

Erie County

6/2/2008 - 7/3/2017, 31 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
27 0.0 0.0 200.5 12 44.4 0
E.
Coli
MPN/100
mL
27 0.0 0.0 45.3 1 3.7 0
pH
-
29 7.8 6.0 8.3 1 3.4 6.5-8.5
Total
Dissolved
Solids
mg/L 28 244.5 39.0 1185.0 1 3.6 500
Corrosivity
Index*

-
14 0.3 -1.5 0.7 10 71.4 -
Hardness mg/L 14 131.5 0.8 630.5 - - -
Nitrate+Nitrite
N
mg/L 9 0.5 0.2 1.9 0 0.0 10
Chloride mg/L 5 37.8 2.0 429.9 1 20.0 250
Sulfate mg/L 2 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 8 0.01 0.003 0.011 3 37.5 0.01
Barium mg/L 7 0.06 0.00 0.22 0 0.0 2
Cadmium mg/L 2 0.00 0.001 0.001 0 0.0 0.005
Calcium mg/L 13 33.35 0.25 173.69 - - -
Chromium mg/L 2 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 19 0.02 0.01 0.26 0 0.0 1.0,1.3
Iron mg/L 15 0.1 0.0 2.1 3 20.0 0.3
Lead-1st
draw
mg/L 6 0.01 0.003 0.041 1 16.7 0.015
Lead-Running mg/L 12 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 9 9.83 0.05 47.78 - - -
Manganese mg/L 15 0.07 0.01 14.85 9 60.0 0.05
Mercury mg/L 8 0.03 0.001 0.501 4 50.0 0.002
Nickel mg/L 2 0.01 0.005 0.005 - - -
Sodium mg/L 4 0.02 0.01 0.18 - - -
Zinc mg/L 5 0.00 0.00 0.02 0 0.0 5

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