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

Clarion County

8/29/2007 - 12/9/2019, 63 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
60 25.5 0.0 200.5 39 65.0 0
E.
Coli
MPN/100
mL
60 0.0 0.0 200.5 23 38.3 0
pH
-
60 6.6 4.4 11.1 29 48.3 6.5-8.5
Total
Dissolved
Solids
mg/L 60 100.0 20.0 1144.0 3 5.0 500
Corrosivity
Index*

-
44 -2.6 -5.8 3.1 42 95.5 -
Hardness mg/L 47 21.9 0.8 418.5 - - -
Nitrate+Nitrite
N
mg/L 47 0.4 0.2 9.6 0 0.0 10
Chloride mg/L 4 11.0 2.0 115.9 0 0.0 250
Sulfate mg/L 3 199.2 10.0 249.0 0 0.0 250
Aluminum mg/L 3 0.0 0.0 0.2 1 33.3 0.05-0.2
Arsenic mg/L 46 0.00 0.001 0.005 0 0.0 0.01
Barium mg/L 47 0.04 0.00 0.44 0 0.0 2
Cadmium mg/L 3 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 47 5.24 0.25 109.88 - - -
Chromium mg/L 3 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 50 0.02 0.01 1.42 1 2.0 1.0,1.3
Iron mg/L 5 3.8 0.1 52.3 3 60.0 0.3
Lead-1st
draw
mg/L 43 0.00 0.003 0.186 8 18.6 0.015
Lead-Running mg/L 46 0.003 0.003 0.019 1 2.2 0.015
Magnesium mg/L 47 1.12 0.05 35.00 - - -
Manganese mg/L 7 0.31 0.01 4.70 5 71.4 0.05
Mercury mg/L 4 0.00 0.000 0.001 0 0.0 0.002
Nickel mg/L 3 0.01 0.005 0.011 - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 3 0.10 0.01 0.10 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