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Erie

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

Erie County

6/2/2008 - 5/25/2018, 81 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
77 2.0 0.0 200.5 45 58.4 0
E.
Coli
MPN/100
mL
77 0.0 0.0 45.3 3 3.9 0
pH
-
78 7.8 6.0 8.3 2 2.6 6.5-8.5
Total
Dissolved
Solids
mg/L 77 230.0 39.0 1185.0 3 3.9 500
Corrosivity
Index*

-
58 0.0 -2.2 0.8 31 53.4 -
Hardness mg/L 59 119.9 0.8 630.5 - - -
Nitrate+Nitrite
N
mg/L 52 0.2 0.2 7.3 0 0.0 10
Chloride mg/L 5 37.8 2.0 429.9 1 20.0 250
Sulfate mg/L 3 10.0 10.0 17.7 0 0.0 250
Aluminum mg/L 1 0.0 0.0 0.0 0 0.0 0.05-0.2
Arsenic mg/L 49 0.00 0.003 0.019 5 10.2 0.01
Barium mg/L 48 0.05 0.00 0.66 0 0.0 2
Cadmium mg/L 2 0.00 0.001 0.001 0 0.0 0.005
Calcium mg/L 57 37.22 0.25 173.69 - - -
Chromium mg/L 2 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 62 0.05 0.01 0.95 0 0.0 1.0,1.3
Iron mg/L 61 0.0 0.0 2.1 4 6.6 0.3
Lead-1st
draw
mg/L 6 0.01 0.003 0.041 1 16.7 0.015
Lead-Running mg/L 55 0.003 0.003 0.046 1 1.8 0.015
Magnesium mg/L 9 9.83 0.05 47.78 - - -
Manganese mg/L 59 5.66 0.01 25.05 43 72.9 0.05
Mercury mg/L 13 0.05 0.001 0.501 9 69.2 0.002
Nickel mg/L 2 0.01 0.005 0.005 - - -
Sodium mg/L 8 0.01 0.01 0.25 - - -
Zinc mg/L 47 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