Above Ground Irrigation, non-potable 780 USG Design

This above ground irrigation system is designed to meet Canadian plumbing codes and CSA standards for rainwater harvesting CSA B805. The overall system design employs a multi-barrier approach to water quality. The first step is the pre-filter. The second step is the rainwater tank design. The third step is the water treatment system. Cleanflo systems are designed from “roof to tap”! with attention to every detail of your rainwater harvesting system. When you purchase the complete system from Rainwater Collection Supply, it is part of a complete package that we will provide support for the life of the system via Email.

This above ground irrigation rainwater harvesting system is designed as a secondary source of water for irrigation purposes. The system will provide water for water uses Tier: R1 – irrigation purposes.

Original price was: $150.00.Current price is: $0.00.


Our FREE Above Ground Irrigation 780 USG Design


The above ground irrigation system will be harvesting rain from one building with one roof.

Gutter, Downpipes, and Conveyance Piping

The gutters, downpipes, and conveyance piping are sized based on specifications from the designs.


The 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 above ground irrigation system will provide a total of 780 USG of rainwater storage, with a total of one (1) above ground tank(s), made of polyethylene. Each tank is 780 USG. 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

Cleanflo determined the water demand to be 8 GPM @ 60 PSI. This will be pumped by a multi-stage booster pump.

Water Quality and Treatment

Cleanflo designed this system to produce water that is safe for CSA B805 R4 uses, namely irrigation.


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