Centre

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

Centre County

6/20/2007 - 7/7/2021, 1,763 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		 1579 0.0 0.0 2419.6 712 45.1 0
E.
Coli		 MPN/100
mL		 1579 0.0 0.0 344.1 213 13.5 0
pH
-		 1015 7.7 4.8 9.8 99 9.8 6.5-8.5
Total
Dissolved
Solids		 mg/L 996 240.0 20.0 2735.0 47 4.7 500
Corrosivity
Index*
-		 431 0.0 -5.5 2.1 302 70.1 -
Hardness mg/L 520 107.8 0.8 1777.9 - - -
Nitrate+Nitrite
N		 mg/L 463 1.3 0.2 33.2 14 3.0 10
Chloride mg/L 76 5.8 1.0 158.4 0 0.0 250
Sulfate mg/L 97 14.4 1.0 387.3 1 1.0 250
Aluminum mg/L 47 0.0 0.0 5.2 8 17.0 0.05-0.2
Arsenic mg/L 208 0.00 0.001 0.071 18 8.7 0.01
Barium mg/L 120 0.03 0.00 0.77 0 0.0 2
Cadmium mg/L 54 0.00 0.001 0.043 2 3.7 0.005
Calcium mg/L 422 25.84 0.25 540.35 - - -
Chromium mg/L 54 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 492 0.01 0.01 68.72 4 0.8 1.0,1.3
Iron mg/L 474 0.1 0.1 95.1 87 18.4 0.3
Lead-1st
draw		 mg/L 242 0.00 0.003 0.108 23 9.5 0.015
Lead-Running mg/L 290 0.003 0.003 0.307 10 3.4 0.015
Magnesium mg/L 422 6.34 0.05 104.09 - - -
Manganese mg/L 475 0.01 0.01 7.34 77 16.2 0.05
Mercury mg/L 67 0.00 0.000 0.002 0 0.0 0.002
Nickel mg/L 54 0.01 0.005 0.115 - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 54 0.01 0.01 0.36 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