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

Montgomery County

9/11/2007 - 6/28/2019, 287 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
264 0.0 0.0 200.5 102 38.6 0
E.
Coli
MPN/100
mL
264 0.0 0.0 200.5 16 6.1 0
pH
-
257 7.7 5.8 9.1 12 4.7 6.5-8.5
Total
Dissolved
Solids
mg/L 257 305.0 43.0 1146.0 25 9.7 500
Corrosivity
Index*

-
110 0.3 -3.5 1.0 63 57.3 -
Hardness mg/L 117 190.4 0.8 846.1 - - -
Nitrate+Nitrite
N
mg/L 77 3.1 0.2 13.4 1 1.3 10
Chloride mg/L 13 38.8 6.7 208.1 0 0.0 250
Sulfate mg/L 12 20.6 2.1 32.6 0 0.0 250
Aluminum mg/L 5 0.0 0.0 0.1 0 0.0 0.05-0.2
Arsenic mg/L 64 0.00 0.001 0.109 7 10.9 0.01
Barium mg/L 51 0.06 0.00 0.55 0 0.0 2
Cadmium mg/L 42 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 109 49.68 0.25 226.38 - - -
Chromium mg/L 42 0.0 0.001 0.006 0 0.0 0.1
Copper mg/L 124 0.04 0.01 2.55 2 1.6 1.0,1.3
Iron mg/L 126 0.1 0.0 4.6 11 8.7 0.3
Lead-1st
draw
mg/L 52 0.01 0.003 0.079 13 25.0 0.015
Lead-Running mg/L 98 0.003 0.003 0.073 5 5.1 0.015
Magnesium mg/L 57 15.06 0.05 68.21 - - -
Manganese mg/L 111 0.05 0.01 40.78 52 46.8 0.05
Mercury mg/L 88 0.05 0.000 1.272 55 62.5 0.002
Nickel mg/L 29 0.01 0.005 0.010 - - -
Sodium mg/L 54 0.01 0.01 17.39 - - -
Zinc mg/L 74 0.00 0.00 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 Services Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM

Ag Analytical Services Lab

Address

111 Ag Analytical Services Lab
University Park, PA 16802
Directions

Hours: Monday-Friday, 8:00 AM - 4:30 PM