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

Northumberland County

8/27/2007 - 6/5/2020, 94 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
87 0.0 0.0 200.5 38 43.7 0
E.
Coli
MPN/100
mL
87 0.0 0.0 200.5 12 13.8 0
pH
-
69 7.7 5.8 10.3 10 14.5 6.5-8.5
Total
Dissolved
Solids
mg/L 68 165.5 49.0 456.0 0 0.0 500
Corrosivity
Index*

-
25 -0.2 -2.7 0.8 12 48.0 -
Hardness mg/L 29 121.2 1.7 370.4 - - -
Nitrate+Nitrite
N
mg/L 30 1.0 0.2 9.6 0 0.0 10
Chloride mg/L 1 1.7 1.7 1.7 0 0.0 250
Sulfate mg/L 4 5.7 1.2 39.5 0 0.0 250
Aluminum mg/L 1 0.0 0.0 0.0 0 0.0 0.05-0.2
Arsenic mg/L 11 0.00 0.001 0.032 1 9.1 0.01
Barium mg/L 4 0.03 0.00 0.11 0 0.0 2
Cadmium mg/L 4 0.00 0.001 0.001 0 0.0 0.005
Calcium mg/L 24 33.03 0.50 72.51 - - -
Chromium mg/L 4 0.0 0.005 0.005 0 0.0 0.1
Copper mg/L 29 0.03 0.01 0.61 0 0.0 1.0,1.3
Iron mg/L 33 0.1 0.1 2.0 5 15.2 0.3
Lead-1st
draw
mg/L 9 0.00 0.003 0.823 1 11.1 0.015
Lead-Running mg/L 17 0.003 0.003 0.004 0 0.0 0.015
Magnesium mg/L 24 6.20 0.10 45.07 - - -
Manganese mg/L 29 0.01 0.01 0.26 5 17.2 0.05
Mercury mg/L 4 0.00 0.001 0.001 0 0.0 0.002
Nickel mg/L 4 0.01 0.005 0.011 - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 4 0.02 0.01 0.05 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 - 4:30 PM

Ag Analytical Services Lab

Address

111 Ag Analytical Srvcs Lab
University Park, PA 16802
Directions

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