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

York County

8/9/2007 - 7/6/2022, 558 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
536 0.0 0.0 2419.6 253 47.2 0
E.
Coli
MPN/100
mL
536 0.0 0.0 200.5 47 8.8 0
pH
-
505 6.7 4.7 9.8 202 40.0 6.5-8.5
Total
Dissolved
Solids
mg/L 505 141.0 20.0 1020.0 8 1.6 500
Corrosivity
Index*

-
216 -1.8 -5.4 0.8 170 78.7 -
Hardness mg/L 235 68.8 0.8 459.7 - - -
Nitrate+Nitrite
N
mg/L 270 4.5 0.2 33.1 27 10.0 10
Chloride mg/L 15 10.5 5.0 320.0 1 6.7 250
Sulfate mg/L 16 12.9 3.9 35.0 0 0.0 250
Aluminum mg/L 10 0.0 0.0 0.1 1 10.0 0.05-0.2
Arsenic mg/L 108 0.00 0.001 0.013 1 0.9 0.01
Barium mg/L 62 0.04 0.00 0.60 0 0.0 2
Cadmium mg/L 39 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 216 15.45 0.25 135.71 - - -
Chromium mg/L 39 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 239 0.03 0.01 7.72 9 3.8 1.0,1.3
Iron mg/L 219 0.1 0.0 25.0 21 9.6 0.3
Lead-1st
draw
mg/L 118 0.01 0.003 0.201 28 23.7 0.015
Lead-Running mg/L 179 0.003 0.003 0.844 12 6.7 0.015
Magnesium mg/L 184 6.01 0.05 45.59 - - -
Manganese mg/L 211 0.01 0.01 22.79 59 28.0 0.05
Mercury mg/L 77 0.00 0.000 0.785 33 42.9 0.002
Nickel mg/L 33 0.01 0.005 0.229 - - -
Sodium mg/L 33 0.01 0.01 0.58 - - -
Zinc mg/L 55 0.01 0.00 0.22 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