Underground injection wells, where water and/or other substances are injected into the Earth, are used for a wide variety of purposes. The U.S. Environmental Protection Agency (EPA) regulates around 850,000 underground injection wells through its Underground Injection Control program under the Safe Drinking Water Act. The EPA defines six classes of wells based on their use:
"A sinkhole is a depression in the ground that has no natural external surface drainage. Basically this means that when it rains, all of the water stays inside the sinkhole and typically drains into the subsurface.
Since hydraulic fracturing operations began in the Marcellus Shale region, debate has raged over whether drilling operations are causing high levels of methane in drinking-water wells. But few systematic scientific studies have been published to date, so it’s unknown if high methane levels are natural or the result of contamination from nearby gas wells. Now, a new study is adding some much-needed baseline data for methane levels in groundwater in New York. The results suggest that at least in some cases methane occurs at naturally high levels in groundwater.
The American Geosciences Institute (AGI) is proud to support Protect your Groundwater Day (PYGWD) on September 11, 2012. Protect Your Groundwater Day, sponsored by AGI member society, the National Ground Water Association (NGWA) - promotes the responsible stewardship of groundwater through educational and outreach initiatives that help raise societal awareness.
The American Geosciences Institute (AGI) is proud to support National Groundwater Awareness Week, March 11-17, 2012. National Groundwater Awareness Week, sponsored by AGI member society the National Ground Water Association (NGWA) - promotes the responsible stewardship of groundwater through education and outreach initiatives that help make society aware of this life-sustaining resource.