Centre

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

Centre County

6/20/2007 - 7/5/2022, 2,033 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		 1830 0.0 0.0 2419.6 794 43.4 0
E.
Coli		 MPN/100
mL		 1830 0.0 0.0 344.1 238 13.0 0
pH
-		 1187 7.7 4.8 10.3 116 9.8 6.5-8.5
Total
Dissolved
Solids		 mg/L 1163 234.0 20.0 2735.0 51 4.4 500
Corrosivity
Index*
-		 539 0.1 -5.5 2.1 335 62.2 -
Hardness mg/L 633 120.7 0.8 1777.9 - - -
Nitrate+Nitrite
N		 mg/L 521 1.6 0.2 33.2 22 4.2 10
Chloride mg/L 82 6.5 1.0 226.3 0 0.0 250
Sulfate mg/L 109 13.6 1.0 387.3 1 0.9 250
Aluminum mg/L 50 0.0 0.0 5.2 8 16.0 0.05-0.2
Arsenic mg/L 215 0.00 0.001 0.071 19 8.8 0.01
Barium mg/L 125 0.03 0.00 0.77 0 0.0 2
Cadmium mg/L 58 0.00 0.001 0.043 2 3.4 0.005
Calcium mg/L 529 25.97 0.25 540.35 - - -
Chromium mg/L 58 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 604 0.02 0.01 68.72 5 0.8 1.0,1.3
Iron mg/L 589 0.1 0.1 95.1 104 17.7 0.3
Lead-1st
draw		 mg/L 328 0.00 0.003 0.108 25 7.6 0.015
Lead-Running mg/L 392 0.003 0.003 0.307 11 2.8 0.015
Magnesium mg/L 529 8.37 0.05 104.09 - - -
Manganese mg/L 589 0.01 0.01 7.34 87 14.8 0.05
Mercury mg/L 72 0.00 0.000 0.002 0 0.0 0.002
Nickel mg/L 58 0.01 0.005 0.115 - - -
Sodium mg/L 0 - - - - - -
Zinc mg/L 58 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