He is a co-sponsor of Senate Bill 19 (2011), which removes the requirement of mandatory disinfection of groundwater in municipal water systems, a requirement that was imposed in reaction to a Cryptosporidium outbreak in 1993, which killed at least 104 citizens of Milwaukee, and sickened thousands of others.
In 1998, a highly publicised Giardia and Cryptosporidium outbreak was reported in Sydney, Australia, but it was found to be due to mismeasurement of the concentrations of microbes in the water supply.