Westmoreland

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

Westmoreland County

7/31/2007 - 6/27/2025, 808 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		 783 1.0 0.0 2419.6 419 53.5 0
E.
Coli		 MPN/100
mL		 783 0.0 0.0 1046.2 121 15.5 0
pH
-		 705 7.6 2.7 9.7 113 16.0 6.5-8.5
Total
Dissolved
Solids		 mg/L 696 264.0 10.0 3246.0 84 12.1 500
Corrosivity
Index*
-		 376 -0.1 -7.6 1.1 233 62.0 -
Hardness mg/L 400 100.8 0.8 1327.8 - - -
Nitrate+Nitrite
N		 mg/L 188 0.4 0.2 16.1 2 1.1 10
Chloride mg/L 164 15.6 1.0 1359.3 3 1.8 250
Sulfate mg/L 99 17.5 1.0 1422.4 5 5.1 250
Aluminum mg/L 35 0.0 0.0 31.4 5 14.3 0.05-0.2
Arsenic mg/L 140 0.00 0.001 0.025 5 3.6 0.01
Barium mg/L 202 0.10 0.00 4.92 1 0.5 2
Cadmium mg/L 47 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 376 26.72 0.25 381.09 - - -
Chromium mg/L 47 0.0 0.001 0.006 0 0.0 0.1
Copper mg/L 432 0.01 0.01 7.74 3 0.7 1.0,1.3
Iron mg/L 402 0.1 0.1 34.1 65 16.2 0.3
Lead-1st
draw		 mg/L 179 0.00 0.003 0.084 13 7.3 0.015
Lead-Running mg/L 204 0.003 0.003 0.349 6 2.9 0.015
Magnesium mg/L 376 7.44 0.05 91.37 - - -
Manganese mg/L 405 0.01 0.01 60.68 106 26.2 0.05
Mercury mg/L 53 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 47 0.01 0.003 0.055 - - -
Sodium mg/L 35 34.26 1.29 231.36 - - -
Zinc mg/L 47 0.01 0.005 4.94 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

720 Tower Rd
University Park, PA 16802
Directions

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

Ag Analytical Services Lab

Address

720 Tower Rd
University Park, PA 16802
Directions

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