Indiana American Water has a warning for Hoosiers this Fourth of July as they set off – and clean up – their pyrotechnic displays.
Fireworks contain a chemical called perchlorate. It’s also found in rocket fuels, explosives, and some fertilizer. At high levels, the chemical in drinking water can create problems with the human thyroid gland, according to the U.S. Geological Survey.
Indiana American Water serves a million Hoosiers. Company spokesman Joe Loughmiller says there’s a few ways Hoosiers can lessen the threat fireworks pose to the state’s water sources.