This fact sheet provides a summary of parameters commonly included on water test reports for tests conducted near gas drilling activities. The “Typical Concentrations” column reports results from research projects conducted in Pennsylvania. Please keep in mind that these “typical” results can vary considerably depending on well properties and geographic location, and may not be representative of water obtained from your geographic area or water source. The “Acceptable Levels” column provides U.S. Environmental Protection Agency drinking water standards where applicable. For more information, or to download this fact sheet please visit - http://extension.psu.edu/water/marcellus-shale/drinking-water/common-water-test-parameters-related-to-natural-gas-drilling/view.