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

Westmoreland County

7/31/2007 - 7/6/2022, 629 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
608 1.0 0.0 2419.6 312 51.3 0
E.
Coli
MPN/100
mL
608 0.0 0.0 1046.2 86 14.1 0
pH
-
557 7.6 2.7 9.7 84 15.1 6.5-8.5
Total
Dissolved
Solids
mg/L 551 263.0 10.0 3246.0 66 12.0 500
Corrosivity
Index*

-
297 -0.1 -7.6 1.1 189 63.6 -
Hardness mg/L 314 103.3 0.8 854.1 - - -
Nitrate+Nitrite
N
mg/L 108 0.5 0.2 7.0 0 0.0 10
Chloride mg/L 106 16.5 1.0 1359.3 1 0.9 250
Sulfate mg/L 50 23.1 1.0 1422.4 4 8.0 250
Aluminum mg/L 27 0.0 0.0 31.4 4 14.8 0.05-0.2
Arsenic mg/L 75 0.00 0.001 0.025 4 5.3 0.01
Barium mg/L 141 0.10 0.00 0.91 0 0.0 2
Cadmium mg/L 41 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 297 28.56 0.25 232.93 - - -
Chromium mg/L 41 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 333 0.01 0.01 2.45 2 0.6 1.0,1.3
Iron mg/L 316 0.2 0.0 34.1 48 15.2 0.3
Lead-1st
draw
mg/L 95 0.00 0.003 0.084 8 8.4 0.015
Lead-Running mg/L 135 0.003 0.003 0.349 8 5.9 0.015
Magnesium mg/L 278 7.90 0.05 78.13 - - -
Manganese mg/L 321 0.01 0.01 66.18 100 31.2 0.05
Mercury mg/L 66 0.00 0.000 23.929 20 30.3 0.002
Nickel mg/L 39 0.01 0.003 0.055 - - -
Sodium mg/L 20 0.02 0.01 17.11 - - -
Zinc mg/L 51 0.01 0.00 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