Lawrence

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

Lawrence County

12/12/2007 - 5/27/2025, 96 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		 92 0.0 0.0 200.5 30 32.6 0
E.
Coli		 MPN/100
mL		 92 0.0 0.0 200.5 7 7.6 0
pH
-		 74 7.4 6.5 8.4 2 2.7 6.5-8.5
Total
Dissolved
Solids		 mg/L 74 339.0 87.0 1474.0 10 13.5 500
Corrosivity
Index*
-		 34 -0.4 -3.0 1.0 20 58.8 -
Hardness mg/L 36 131.1 0.8 912.9 - - -
Nitrate+Nitrite
N		 mg/L 35 0.2 0.2 12.5 3 8.6 10
Chloride mg/L 15 9.1 1.1 77.0 0 0.0 250
Sulfate mg/L 8 83.6 13.2 852.7 1 12.5 250
Aluminum mg/L 5 0.0 0.0 0.1 1 20.0 0.05-0.2
Arsenic mg/L 33 0.00 0.001 0.006 0 0.0 0.01
Barium mg/L 22 0.04 0.00 0.48 0 0.0 2
Cadmium mg/L 6 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 33 35.81 0.25 192.02 - - -
Chromium mg/L 6 0.0 0.005 0.005 0 0.0 0.1
Copper mg/L 39 0.01 0.01 0.43 0 0.0 1.0,1.3
Iron mg/L 32 0.1 0.1 6.4 8 25.0 0.3
Lead-1st
draw		 mg/L 36 0.00 0.003 0.050 3 8.3 0.015
Lead-Running mg/L 27 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 33 7.58 0.05 52.21 - - -
Manganese mg/L 34 0.02 0.01 2.97 14 41.2 0.05
Mercury mg/L 5 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 6 0.01 0.005 0.009 - - -
Sodium mg/L 6 125.37 5.51 197.30 - - -
Zinc mg/L 6 0.01 0.005 0.07 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