Rainwater harvesting systems implement different ways to filter the water before and after it’s stored for later use. Local Spicewood, Texas company, Tall Drink Rainwater Harvesting owner Zak Crosby has developed an automatic first flush diverter pre-filtration system.
This automatic first flush diverter system keeps the first amount of rainfall, typically 20 – 150 gallons, that falls on the rooftop separated from the higher quality of rainwater that then is allowed to convey into the storage tank. This diversion of the first rainfall separates contamination that falls on the roof, like dead bugs, dust, pollen, etc.
Zak designed this system to be low-energy and low-maintenance, with a solar panel that charges a battery as the power source. The system that Tall Drink has showcased uses an 18 amp hour battery that can go several weeks without being charged by the sun since the system has such a low power draw.
Go to TallDrinkRH.com
Tall Drink Rainwater Harvesting, First Flush Diverter System Presentation
This first flush diversion system is in place to keep the storage for the rainwater as clean as possible from contamination. As rainwater falls onto the roof and into the gutter, it sometimes can collect contaminates such as pine needles and pollen, and this low-maintenance system flushes that out before it goes into the storage tank.
Requirements for rainwater systems vary on the location of the project as well as the incentives available. In Texas, first flush diverter systems aren’t required on the state level but are highly encouraged to prevent contamination. When the system is used for potable drinking water or if the system has a local rebate, the requirement for a first flush system may be applicable.
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