Rain Guardian Pretreatment Chambers
Rain Guardian pretreatment chambers were developed and patented by the Anoka Conservation District to provide a stable inlet and effective pretreatment for bioretention BMPs (e.g. rain gardens). Alternative inlets commonly consist of rock or turf grass, neither of which provides effective pretreatment. Rain Guardians collect and contain sediment and debris in an easy to clean location, thereby greatly simplifying maintenance. The chamber can be cleaned in less than five minutes using simple hand tools. Models are available for residential and commercial/industrial applications. Installation in new construction or retrofits is easy, and placement and securing are completed in minutes.