Lawrence

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

Lawrence County

12/12/2007 - 6/30/2023, 73 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		 70 0.0 0.0 200.5 26 37.1 0
E.
Coli		 MPN/100
mL		 70 0.0 0.0 200.5 8 11.4 0
pH
-		 59 7.4 6.5 8.4 2 3.4 6.5-8.5
Total
Dissolved
Solids		 mg/L 59 338.0 87.0 1474.0 9 15.3 500
Corrosivity
Index*
-		 25 -0.2 -2.2 1.0 14 56.0 -
Hardness mg/L 26 218.2 0.8 912.9 - - -
Nitrate+Nitrite
N		 mg/L 18 0.2 0.2 11.0 2 11.1 10
Chloride mg/L 11 9.1 5.0 77.0 0 0.0 250
Sulfate mg/L 5 80.7 30.5 852.7 1 20.0 250
Aluminum mg/L 6 0.0 0.0 0.1 1 16.7 0.05-0.2
Arsenic mg/L 23 0.00 0.001 0.006 0 0.0 0.01
Barium mg/L 18 0.05 0.00 0.17 0 0.0 2
Cadmium mg/L 6 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 24 63.88 0.25 192.02 - - -
Chromium mg/L 6 0.0 0.005 0.005 0 0.0 0.1
Copper mg/L 30 0.01 0.01 0.17 0 0.0 1.0,1.3
Iron mg/L 23 0.1 0.1 3.8 6 26.1 0.3
Lead-1st
draw		 mg/L 20 0.00 0.003 0.036 2 10.0 0.015
Lead-Running mg/L 20 0.003 0.003 0.006 0 0.0 0.015
Magnesium mg/L 24 9.60 0.05 52.21 - - -
Manganese mg/L 25 0.03 0.01 1.46 12 48.0 0.05
Mercury mg/L 6 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 6 0.01 0.005 0.009 - - -
Sodium mg/L 7 137.52 5.55 174.25 - - -
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

111 Ag Analytical Srvcs Lab
University Park, PA 16802
Directions

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

Ag Analytical Services Lab

Address

111 Ag Analytical Srvcs Lab
University Park, PA 16802
Directions

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