Heavy spring rains have already started. Along with snow melt, the resulting flooding causes pollutants to wind up in our natural waterways. Rain gardens help by soaking up and filtering storm water runoff. In today’s video from Building Wisconsin TV, Karen Sands from MMSD shows host Stuart Keith how to install a rain garden. The project includes disconnecting a home’s drain tile system that was connected to the sewer and pumping that water out into the yard.