Montgomery

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

Montgomery County

9/11/2007 - 6/21/2023, 487 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		 441 0.0 0.0 200.5 163 37.0 0
E.
Coli		 MPN/100
mL		 441 0.0 0.0 200.5 23 5.2 0
pH
-		 425 7.6 5.3 9.1 27 6.4 6.5-8.5
Total
Dissolved
Solids		 mg/L 426 303.5 20.0 1146.0 40 9.4 500
Corrosivity
Index*
-		 189 0.1 -5.0 1.1 112 59.3 -
Hardness mg/L 202 188.6 0.8 846.1 - - -
Nitrate+Nitrite
N		 mg/L 108 2.8 0.2 13.4 1 0.9 10
Chloride mg/L 25 48.8 6.7 208.1 0 0.0 250
Sulfate mg/L 26 25.3 2.1 68.9 0 0.0 250
Aluminum mg/L 10 0.0 0.0 0.1 0 0.0 0.05-0.2
Arsenic mg/L 117 0.00 0.001 0.109 15 12.8 0.01
Barium mg/L 87 0.06 0.00 0.85 0 0.0 2
Cadmium mg/L 69 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 185 48.98 0.25 226.38 - - -
Chromium mg/L 69 0.0 0.001 0.006 0 0.0 0.1
Copper mg/L 258 0.02 0.01 1.49 1 0.4 1.0,1.3
Iron mg/L 200 0.1 0.1 4.6 15 7.5 0.3
Lead-1st
draw		 mg/L 123 0.00 0.003 0.079 13 10.6 0.015
Lead-Running mg/L 178 0.003 0.001 0.099 5 2.8 0.015
Magnesium mg/L 185 13.38 0.05 68.21 - - -
Manganese mg/L 195 0.01 0.01 2.86 10 5.1 0.05
Mercury mg/L 83 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 69 0.01 0.005 0.026 - - -
Sodium mg/L 1 17.39 17.39 17.39 - - -
Zinc mg/L 69 0.02 0.005 1.21 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