Is there a risk to children from swimming in area lakes/rivers?
At the concentrations seen in the Coloma Township area, there is no risk posed to children or adults swimming in area waters. The Groundwater Household Use Screening Level (GHUSL), which is protective of body contact, is 590 parts per billion (ppb) and so far the highest groundwater concentration has been 253 ppb. Any Dacthal® metabolite entering surface water would be diluted in the volume of that water body. The Dacthal® parent compound itself would be broken down to the metabolites by sunlight and warm temperatures. There is always the possibility of accidental (incidental) swallowing of the water when swimming. However, the amount swallowed would be minimal and would not greatly add to overall exposure. Can I use contaminated water on my garden? You can water your garden with groundwater containing Dacthal®. This herbicide was registered for use on numerous crops. You could also wash off your produce with this water and shake off the excess water – the amount of water remaining wou
