Category Archives: Rainwater Catchment

Rainwater Catchment

Why Harvest Rain During a Drought?


Close-up of water droplets on a leaf's surface.With little rain falling from the sky, the drought in Washington and California has forced the issue of mandates for businesses and individuals to cut water use.

Why waste precious drops when they can be harvested from theroof?

In a recent story about harvesting rainwater during the drought, designer Mike Brioli of Living Systems Designs is interviewed about his own rainwater collection system, which funnels water from his roof through a filter to a 1,500-gallon tank hidden above ground behind greenery. Then, underground pipes lead the rainwater to a pumping system. The collected rainwater is used for toilet flushing and laundry.

Brioli receives a couple of calls per day from folks interested in their own system, inquiring about cost, space needed and steps that need to be taken to design and install a rain harvesting system.

Systems can range from simple rain barrels for garden irrigation, to more elaborate and expensive systems, where water is collected, filtered and treated and used for drinking.

While a potable system may require a larger investment, the long-term savings are measurable. Plus, aging infrastructure is a concern in some areas. Having a rainwater collection system designed and installed is a way for residential and business customers to supplement city or well water in the event of a shortage or even worse, fear of health risk, suchas was caused by thehazardous spill into the Animas River in Colorado, which spread to New Mexico and Utah.

Environment, Rainwater Catchment, Sustainability

Protect Your Home and Business from Wildfires

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Forest engulfed in intense wildfire at night.Over 600,000 acres have burned in wildfires in Washington State this fire season and 5,100 homes are currently threatened.

Fire is a frightening concept, but an unfortunate reality. In rural areas, away from municipal resources, a water tank used strictly for fire suppression may be the only way to protect your family, farm, house, or business.

An exterior wildfire suppression system includes an array of sprinklers supplied by a water source. If there is no natural w
ater source, a water storage tank designated as the source of water supply can make the difference in protection. Sprinklers attached to the roof and around the perimeter of the building are meant to saturate and create humidity. The idea is to soak the property’s vegetation and roof of the home.

The amount of time a system will run depends on amount of water available. A system with 30,000 gallons of storage can prodWorkers use cranes to unload large metal tanks at an industrial site.uce 30 gallons a minute for 16.6 hrs. If used with a wetting agent, the solution will stay intact for a longer period. Having a source of water designated for fire protection can be an investment that could save your home.

RainBank Rainwater Systems has been installing corrugated steel water tanks for over 15 years and recognizes the benefit of onsite water storage for wildfire protection. The National Fire Protection Association provides codes and standards for fire protection that are available for free for online viewing.

Through its Fire Adapted Communities Program, the NFPA offers information and specific actions you can take, to loweryour risk in the event of awildfire. Take a look to learn about how you can protect your home and your community from the devastation of wildfires.

Rainwater Catchment

How To Keep Stored Rainwater Clean


Close-up of a green leaf with water droplets on dark soil.Compared to surface water, rainwater is relatively clean to begin with. It is what rainwater comes in contact with that requires attention. Dust, pollen, organic materials, such as leaves and pine needles greatly affect the quality of stored rainwater.

Filtering out this debris upstream from storage should be included in your rainwater harvesting system. A high quality gutter screen is recommended as a first line of defense against debris, while it also keeps your gutters clean.

The use of downspout filters, or vortex filters, will improve the quality of your stored water by filtering and aerating rainBlack plastic pipe fitting with multiple outlets for plumbing.water before it enters the storage tank. Removal of large particulate along with aeration greatly reduces the amount of harmful bacteria entering the storage tank. A downspout filter or vortex filter acts as first flush device and aerates the water and will not freeze as other first flush devices.

A smoothing inlet installed inside the bottom of the tank distributes the incoming water horizontally and prevents stirring up the sediments while aerating the water as it enters the tank. Aeration happens with each collection cycle and helps keep a healthy bio film at the bottom of the tank. There are beneficial microbes in the sediment that actually eat bacteria as they sink to the bottom. A healthily maintained bio film enhances the water quality in storage.

To prevent backup in the system during heavy rains, the storage tank should always include an overflow device. The overflow device allows water to overflow, but protects water quality in the storage tank with back flow prevention and vermin protection while also providing a skimming during overflow of buoyant debris, such as pollen, on the water surface.

Finally, a floating suction ensures the water being provided to the pressure pump and filtration is the cleanest water from the storage tank. Since all harvested rainwater is filtered before entering the tank, the floating filter should never clog, but will instead take water from just below the surface. Water at this depth is of the highest quality in the tank, because any particulate that enters the tank either floats on the surface or settles to the bottom. The floating filter acts as an uptake point for the pump than a filter; thus, the floating filter should never require maintenance.

RainBank Rainwater Systems is a dealer of Wisy and the Four Step System to ensure quality, collected rainwater.