These test results are based on non-random samples. The University of Iowa Hygienic Laboratory, Private Well Water Quality, 1990-1994. A 1993 study of Radon-222 in Iowa's PWS included 2 sample sites in Fayette County. The lake was determined to be fully supportive of fishing and swimming. The PWS in Fayette County do not treat water for non-regulated items.
All municipal systems sell water using base rates, followed by block rates.
One mobile home park system has established a capital reserve. There are 16 certified operators available for water system operation in the county. Iowa Plan Survey, 1994. The 1990 population of Fayette County was 21,843, which represents a decline of 18.8 percent since 1970. Woods and Poole in 1995 projected a decrease of 8.0 percent from 1990 to 2015.