Those industries employed an estimated 3,499 people. Most of the businesses in Iowa County purchase their water from a PWS or obtain their water from a private supply not requiring a permit. There are four water use permits for industry in Iowa County. There is no power production in Iowa County. Mining Water Use Mining in Iowa County consists of sand and gravel extraction.
Activity varies from year to year based upon construction needs.
Two water permits were issued for mining in the county. The State-Wide Rural Well Water Survey completed in 1989 indicates the following quality results for private well water, shown in Table 3, for the east hydrogeologic region in which Iowa County is located. The Iowa State-Wide Rural Well Water Survey, 1990. The UHL's test results for the county also show that in an average year 10.7 percent of wells tested for nitrates exceeded the recommended maximum. The test results are based on non-random samples.