1. Avery, C., 1995. Reversal of declining ground-water levels in the Chicago area: U.S. Geological Survey Fact Sheet FS-222-95, 2 p.
2. Predicting arsenic in drinking water wells of the Central Valley, California;Ayotte;Environ. Sci. Technol.,2016
3. Böhlke, J.K., 2002. Groundwater recharge and agricultural contamination, Hydrogeology Journal 10, pg 153-179. 10.1007/s10040-001-0183-3.
4. Botts, L., Krushelnicki, B., 1987.The Great Lakes. An Environmental Atlas and Resource Book. Great Lakes National Program Office, US Environmental Protection Agency, 230 S. Dearborn St., Chicago, IL 60604 or Conservation and Protection, Ontario Region, Great Lakes Environment Program, Environment Canada, 25 St. Clair Avenue East, Toronto, Ontario, Canada M4T 1M2.
5. Source and transport of human enteric viruses in deep municipal water supply wells;Bradbury;Environ. Sci. Technol.,2013