Centre

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

Centre County

5/2/2007 - 6/29/2023, 2,658 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		 2001 0.0 0.0 200.5 860 43.0 0
E.
Coli		 MPN/100
mL		 2001 0.0 0.0 200.5 253 12.6 0
pH
-		 1607 7.6 4.1 10.3 169 10.5 6.5-8.5
Total
Dissolved
Solids		 mg/L 1580 224.0 20.0 2735.0 63 4.0 500
Corrosivity
Index*
-		 590 0.1 -4.6 2.1 359 60.8 -
Hardness mg/L 1028 110.9 0.8 1777.9 - - -
Nitrate+Nitrite
N		 mg/L 818 0.9 0.2 33.2 26 3.2 10
Chloride mg/L 439 6.5 1.0 568.8 5 1.1 250
Sulfate mg/L 466 13.4 0.1 431.3 4 0.9 250
Aluminum mg/L 56 0.0 0.0 5.2 9 16.1 0.05-0.2
Arsenic mg/L 252 0.00 0.001 0.071 21 8.3 0.01
Barium mg/L 454 0.07 0.00 7.62 3 0.7 2
Cadmium mg/L 64 0.00 0.001 0.043 2 3.1 0.005
Calcium mg/L 578 26.05 0.25 540.35 - - -
Chromium mg/L 64 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 666 0.02 0.00 68.72 5 0.8 1.0,1.3
Iron mg/L 996 0.1 0.1 95.1 177 17.8 0.3
Lead-1st
draw		 mg/L 433 0.00 0.001 0.273 31 7.2 0.015
Lead-Running mg/L 443 0.003 0.001 0.307 14 3.2 0.015
Magnesium mg/L 578 8.25 0.05 104.09 - - -
Manganese mg/L 958 0.01 0.01 7.34 172 18.0 0.05
Mercury mg/L 79 0.00 0.000 0.002 0 0.0 0.002
Nickel mg/L 64 0.01 0.005 0.115 - - -
Sodium mg/L 6 27.17 1.34 127.95 - - -
Zinc mg/L 64 0.01 0.005 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 - 4:00 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