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Westmoreland

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

Westmoreland County

7/31/2007 - 7/5/2016, 401 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
391 1.0 0.0 200.5 214 54.7 0
E.
Coli
MPN/100
mL
391 0.0 0.0 200.5 52 13.3 0
pH
-
358 7.7 2.7 9.3 58 16.2 6.5-8.5
Total
Dissolved
Solids
mg/L 357 268.0 10.0 3246.0 44 12.3 500
Corrosivity
Index*

-
194 -0.0 -7.6 0.9 130 67.0 -
Hardness mg/L 205 102.7 0.8 743.1 - - -
Nitrate+Nitrite
N
mg/L 63 0.5 0.2 2.8 0 0.0 10
Chloride mg/L 78 19.5 2.0 1359.3 1 1.3 250
Sulfate mg/L 28 26.5 4.4 1422.4 4 14.3 250
Aluminum mg/L 16 0.0 0.0 31.4 3 18.8 0.05-0.2
Arsenic mg/L 34 0.00 0.001 0.009 0 0.0 0.01
Barium mg/L 93 0.09 0.00 0.91 0 0.0 2
Cadmium mg/L 21 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 195 27.01 0.25 188.65 - - -
Chromium mg/L 21 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 218 0.01 0.01 1.02 0 0.0 1.0,1.3
Iron mg/L 206 0.2 0.1 34.1 26 12.6 0.3
Lead-1st
draw
mg/L 47 0.00 0.003 0.071 2 4.3 0.015
Lead-Running mg/L 63 0.003 0.003 0.048 2 3.2 0.015
Magnesium mg/L 195 8.35 0.05 78.13 - - -
Manganese mg/L 209 0.01 0.01 60.68 55 26.3 0.05
Mercury mg/L 23 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 21 0.01 0.003 0.055 - - -
Sodium mg/L 1 17.11 17.11 17.11 - - -
Zinc mg/L 21 0.01 0.01 0.63 0 0.0 5

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