Description Our FREE Below Ground, Potable, 1000 USG Design This below ground potable rainwater harvesting system is designed as a primary source of water for potable purposes, such as drinking, cooking, bathing, toilets, and laundry. There is a backup water source from hauled bulk potable water if the rainwater tank is empty. The system will provide water for water uses Tier: R4 – Potable Domestic. Roof The Below Ground, Potable system will be harvesting rain from one building. The roof is metal. Gutter Downpipes and Conveyance Piping The gutters, downpipes, and conveyance piping are sized based on specifications from the designs. Prefilter The Below Ground, Potable system will require one (1) pre-filter. These pre-filters operate as both a first flush diverter and prefilter, with a filter mesh size of 320 microns. The full cross-section (pipe diameter) of the rainwater drainage system remains continuously open, and there are no reductions in the cross-section of this appliance in which dirt or water can collect. Rainwater Tank / Cistern This system will provide a total of 1000 US gallons of rainwater storage, with a total of one (1) below-ground tank, made of polyethylene. The tank is 1000 US gallons. The rainwater tank is designed to provide safe storage of rainwater, which improves water quality because of its design and function. The calming inlet prevents agitation of settled fine dust, the skimming overflow removes floating particles, and the floating filter ensures water is drawn into the pump from approximately 150 mm (6.0″) below the surface of the water. Water Pumping and Treatment System Cleanflo determined the water demand to be 8 GPM at approximately 60 PSI. This will be pumped by a multi-stage booster pump powered by VFD. The treatment will be three stages to ensure water is safe and no staining on fixtures. Stage one is a sediment filter of 5 microns. Stage two is a 10-micron carbon filter. Stage three is a 1-micron absolute sediment filter. Stage four is an ultraviolet sanitation system NSF 55 Class A. Water Quality and Treatment Cleanflo designed this system to produce water that is safe for CSA B805 R4 uses, namely potable domestic
