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

Pennsylvania

1/4/2007 - 7/14/2020, 13,302 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
12417 0.0 0.0 2419.6 5807 46.8 0
E.
Coli
MPN/100
mL
12417 0.0 0.0 1046.2 1511 12.2 0
pH
-
10562 7.5 2.7 11.1 1486 14.1 6.5-8.5
Total
Dissolved
Solids
mg/L 10500 188.0 10.0 9220.0 608 5.8 500
Corrosivity
Index*

-
4633 -0.6 -7.6 3.1 3080 66.5 -
Hardness mg/L 4861 87.0 0.8 1823.6 - - -
Nitrate+Nitrite
N
mg/L 4394 0.9 0.2 217.7 188 4.3 10
Chloride mg/L 1705 7.4 1.0 2361.2 39 2.3 250
Sulfate mg/L 634 15.8 1.0 1422.4 31 4.9 250
Aluminum mg/L 428 0.0 0.0 141.4 76 17.8 0.05-0.2
Arsenic mg/L 2807 0.00 0.001 0.354 167 5.9 0.01
Barium mg/L 3168 0.06 0.00 11.54 13 0.4 2
Cadmium mg/L 883 0.00 0.001 0.043 5 0.6 0.005
Calcium mg/L 4445 22.01 0.25 540.35 - - -
Chromium mg/L 883 0.0 0.001 0.158 1 0.1 0.1
Copper mg/L 4076 0.03 0.01 68.72 136 3.3 1.0,1.3
Iron mg/L 4752 0.1 0.0 95.1 652 13.7 0.3
Lead-1st
draw
mg/L 1943 0.01 0.003 2.869 331 17.0 0.015
Lead-Running mg/L 2939 0.003 0.003 2.417 175 6.0 0.015
Magnesium mg/L 2867 4.09 0.05 159.98 - - -
Manganese mg/L 4142 0.04 0.00 96.30 1888 45.6 0.05
Mercury mg/L 2371 0.05 0.000 225.270 1770 74.7 0.002
Nickel mg/L 1064 0.04 0.003 68.889 - - -
Sodium mg/L 1257 0.01 0.01 77.34 - - -
Zinc mg/L 1995 0.00 0.00 4.60 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