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Cameron

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

Cameron County

3/11/2008 - 1/6/2017, 72 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
70 23.4 0.0 200.5 52 74.3 0
E.
Coli
MPN/100
mL
70 0.0 0.0 94.5 21 30.0 0
pH
-
69 7.4 5.5 9.3 7 10.1 6.5-8.5
Total
Dissolved
Solids
mg/L 67 115.0 20.0 578.0 3 4.5 500
Corrosivity
Index*

-
28 -0.2 -2.9 0.3 13 46.4 -
Hardness mg/L 10 58.3 20.9 200.3 - - -
Nitrate+Nitrite
N
mg/L 42 0.5 0.2 4.8 0 0.0 10
Chloride mg/L 23 18.6 2.0 251.7 1 4.3 250
Sulfate mg/L 2 10.0 10.0 10.0 0 0.0 250
Aluminum mg/L 2 0.0 0.0 0.0 0 0.0 0.05-0.2
Arsenic mg/L 20 0.00 0.003 0.048 1 5.0 0.01
Barium mg/L 25 0.06 0.00 2.03 1 4.0 2
Cadmium mg/L 2 0.00 0.001 0.001 0 0.0 0.005
Calcium mg/L 10 17.19 5.22 51.72 - - -
Chromium mg/L 2 0.0 0.005 0.005 0 0.0 0.1
Copper mg/L 10 0.01 0.01 0.08 0 0.0 1.0,1.3
Iron mg/L 11 0.1 0.0 0.3 0 0.0 0.3
Lead-1st
draw
mg/L 9 0.01 0.003 0.077 2 22.2 0.015
Lead-Running mg/L 8 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 9 3.33 1.91 17.27 - - -
Manganese mg/L 12 0.01 0.01 8.99 5 41.7 0.05
Mercury mg/L 2 0.05 0.001 0.100 1 50.0 0.002
Nickel mg/L 1 0.01 0.005 0.005 - - -
Sodium mg/L 1 0.01 0.01 0.01 - - -
Zinc mg/L 2 0.01 0.00 0.02 0 0.0 5

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