Click here for a pdf list of known operating ASR Systems in the United States (as of March 2004).
Nearly 95 ASR systems are in operation in the North America as of April 2009. This may be compared with three in 1983. Each system has wells that recharge and recover fresh water to meet seasonal peak, emergency, long-term or other water needs. Most systems are storing treated drinking water. At least 100 others are in various stages of investigation, design, construction or testing in the U.S. and overseas.