Description Our FREE Below Ground Potable System 6000 USG, 4 X 1500 USG Design This below ground potable rainwater harvesting system is intended as a primary source of water for potable purposes, such as drinking, cooking, bathing, toilets, and laundry. Additionally, it provides a backup water source from hauled bulk potable water if the rainwater tank is empty. The system is designed to provide water for water uses Tier: R4 – Potable Domestic. Roof The below ground potable system will be harvesting rain from one building with an asphalt roof. When using the rainwater for potable water, the roof should be NSF P151 approved or coated with a NSF P151 approved coating. Gutter, Downpipes, and Conveyance Piping The gutters, downpipes, and conveyance piping are sized based on specifications from the designs. When using the rainwater for potable water, the gutter, downpipe, and conveyance piping should be NSF P151 approved or coated with a NSF P151 approved coating. Pre-Filter The system will require two (2) pre-filters. 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 below ground potable system will provide a total of 6000 USG of rainwater storage, with a total of four (4) below-ground tanks, made of polyethylene. Each tank is 1500 USG. The rainwater tank is designed to provide safe storage of rainwater, which improves water quality due to 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 @ 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 to use. Stage one is a sediment filter of 15 microns, which provides a self-cleaning flush to drain. Stage two is a 10 carbon filter. Stage three is a 1 micron 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.
