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

Chester County

1/18/2008 - 7/6/2022, 330 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
308 0.0 0.0 200.5 105 34.1 0
E.
Coli
MPN/100
mL
308 0.0 0.0 36.4 5 1.6 0
pH
-
268 7.0 5.1 11.4 63 23.5 6.5-8.5
Total
Dissolved
Solids
mg/L 265 199.0 24.0 868.0 8 3.0 500
Corrosivity
Index*

-
155 -1.6 -4.7 1.9 125 80.6 -
Hardness mg/L 157 81.7 0.8 403.0 - - -
Nitrate+Nitrite
N
mg/L 118 3.6 0.2 13.9 7 5.9 10
Chloride mg/L 17 15.7 5.5 407.7 1 5.9 250
Sulfate mg/L 16 21.6 5.8 77.2 0 0.0 250
Aluminum mg/L 15 0.0 0.0 0.1 0 0.0 0.05-0.2
Arsenic mg/L 80 0.00 0.001 0.014 1 1.3 0.01
Barium mg/L 38 0.05 0.00 1.50 0 0.0 2
Cadmium mg/L 21 0.00 0.001 0.002 0 0.0 0.005
Calcium mg/L 151 18.81 0.25 126.03 - - -
Chromium mg/L 21 0.0 0.001 0.005 0 0.0 0.1
Copper mg/L 195 0.06 0.01 11.31 3 1.5 1.0,1.3
Iron mg/L 160 0.1 0.0 28.5 20 12.5 0.3
Lead-1st
draw
mg/L 82 0.00 0.003 0.103 11 13.4 0.015
Lead-Running mg/L 139 0.003 0.003 0.074 7 5.0 0.015
Magnesium mg/L 123 8.29 0.05 43.37 - - -
Manganese mg/L 154 0.01 0.01 19.52 45 29.2 0.05
Mercury mg/L 56 0.05 0.000 5.235 29 51.8 0.002
Nickel mg/L 19 0.01 0.005 0.020 - - -
Sodium mg/L 29 0.01 0.01 0.26 - - -
Zinc mg/L 41 0.00 0.00 0.59 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