Rain Water Harvesting

LMC currently collects rainwater in the pond and utilizes for site irrigation. While it is not economically feasible to retro-fit the existing building with new secondary piping for filtered rainwater; it could be incorporated in a new building expansion project. The rainwater would be collected from the roof is routed through roof drains, down roof conductors and through a Vortex filter which separates debris from the roof water directing it to the public storm sewer. The clean rainwater discharges from the Vortex filter and is routed to a storage tank buried outside of the building. A well pump located in the storage tank is activated by a pressure switch located in the water supply line feeding the water closets. A “back up” potable system is employed for times when there is not enough rain to satisfy the demand of the water closets.

Upfront Cost: Moderate

Instructional Opportunities: Collect & evaluate data

Physical Impacts: Requires double piping; best for planning a new facility