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

Westmoreland County

7/31/2007 - 6/30/2020, 558 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
540 1.0 0.0 2419.6 282 52.2 0
E.
Coli
MPN/100
mL
540 0.0 0.0 1046.2 77 14.3 0
pH
-
497 7.7 2.7 9.7 77 15.5 6.5-8.5
Total
Dissolved
Solids
mg/L 493 262.0 10.0 3246.0 55 11.2 500
Corrosivity
Index*

-
261 -0.1 -7.6 1.1 171 65.5 -
Hardness mg/L 274 104.1 0.8 743.1 - - -
Nitrate+Nitrite
N
mg/L 96 0.5 0.2 7.0 0 0.0 10
Chloride mg/L 97 17.0 1.1 1359.3 1 1.0 250
Sulfate mg/L 42 23.9 1.0 1422.4 4 9.5 250
Aluminum mg/L 25 0.0 0.0 31.4 3 12.0 0.05-0.2
Arsenic mg/L 64 0.00 0.001 0.013 2 3.1 0.01
Barium mg/L 129 0.10 0.00 0.91 0 0.0 2
Cadmium mg/L 39 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 261 28.49 0.25 188.65 - - -
Chromium mg/L 39 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 304 0.01 0.01 2.37 1 0.3 1.0,1.3
Iron mg/L 277 0.2 0.1 34.1 44 15.9 0.3
Lead-1st
draw
mg/L 86 0.00 0.003 0.084 7 8.1 0.015
Lead-Running mg/L 117 0.003 0.003 0.349 5 4.3 0.015
Magnesium mg/L 261 8.10 0.05 78.13 - - -
Manganese mg/L 284 0.01 0.01 60.68 75 26.4 0.05
Mercury mg/L 45 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 39 0.01 0.003 0.055 - - -
Sodium mg/L 1 17.11 17.11 17.11 - - -
Zinc mg/L 39 0.01 0.01 1.63 0 0.0 5

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

Ag Analytical Services Lab

Address

111 Ag Analytical Srvcs Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM

Ag Analytical Services Lab

Address

111 Ag Analytical Srvcs Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM