» Wells


Safety and cleanup precautions for primary responders to flood emergencies. Read More

Disinfecting Wells Following an Emergency

A five-page electronic paper on disaster recovery information and safety precautions for disinfecting water in a well. Read More

Manure Pits/Farm Ponds/Wells

Documents and fact sheets on farm safety. Read More

ECAR Fact Sheet for California Septic Tanks and Disposal Wells

There is a simple rule for determining when it is OK to put industrial wastewater into a septic system – never. You can dispose of “sanitary wastes” from ordinary lavatory use or hand washing in a septic field only if the wastewater has not been contaminated with any water from an industrial operation. Some yards may have shallow wells or cesspools that have been used for disposal of industrial wastewater. It is now illegal to create such systems, and existing systems need to either be closed or need to have special permits to continue their operation. This fact sheet will help you check whether your existing wastewater disposal practices are in compliance with current rules. Read More

Water Science for Schools: Ground-water Quality

Just because you have a well that yields plenty of water doesn’t mean you can go ahead and just take a drink. Because water is such an excellent solvent it can contain lots of dissolved chemicals. And since ground water moves through rocks and subsurface soil, it has a lot of opportunity to dissolve substances as it moves. For that reason, ground water will often have more dissolved substances than surface water will. Read More

Tracing and Dating Young Ground Water

Data on concentrations of environmental tracers, such as chlorofluorocarbons (CFCs), tritium (3H), and other chemical and isotopic substances in ground water, can be used to trace the flow of young water (water recharged within the past 50 years) and to determine the time elapsed since recharge. Information about the age of ground water can be used to define recharge rates, refine hydrologic models of ground-water systems, predict contamination potential, and estimate the time needed to flush contaminants from ground-water systems. CFCs also can be used to trace seepage from rivers into ground-water systems, provide diagnostic tools for detection and early warning of leakage from landfills and septic tanks, and to assess susceptibility of water-supply wells to contamination from near-surface sources. Read More

Real-time Ground-Water Data For The Nation

Ground water is a critical natural resource used as a source of drinking water by more than 140 million people nationwide. Measurements of ground-water levels from wells are used to observe the effects of hydrologic stresses on an aquifer. These data are needed to monitor responses to climate and to ground-water development. Ground-water-level data are used to quantify aquifer recharge, as a calibration tool for ground-water models, and to support water-quality investigations. Read More

Aquifer Basics

Aquifer: A formation, group of formations, or part of a formation that contains sufficient saturated, permeable material to yield significant quantities of water to wells and springs. Read More

USGS Ground-Water Data for the Nation

The USGS National Water Information System (NWIS) contains extensive water data for the Nation. Public access to many of these data is provided via NWISWeb (additional background). The Ground-Water database consists of more than 850,000 records of wells, springs, test holes, tunnels,drains, and excavations in the United States. Available site descriptive information includes well location information such as latitude and longitude, well depth, and aquifer. Read More

Protecting Your Private Water Supply

Approximately 23 million U.S. citizens rely on their own private drinking water supplies. Most of these supplies are drawn from ground water through wells, but some households also use water from streams or cisterns. These households must take special precautions to ensure the protection and maintenance of their drinking water supplies. Read More


EERL's mission is to be the best possible online collection of environmental and energy sustainability resources for community college educators and for their students. The resources are also available for practitioners and the public.


EERL is a product of a community college-based National Science Foundation Center, the Advanced Technology Environmental and Energy Center (ATEEC), and its partners.

Contact ATEEC 563.441.4087 or by email ateec@eicc.edu