Never Clean a Filter Basket Again


A rainwater system designed with WISY products requires minimal maintenance and never needs replacing. Never clean a filter basket or a tank again. Ever.

White pipes and tubing on a dark rooftop surface.A 45,000 gallon, cement vault, rainwater collection system will supply a new Seattle residence with potable water. Rainwater is collected from the roof and conveyed to the cistern through two Wisy calming inlets.

While filtration removes most of the sediment and bacteria before rainwater enters the tank, a small amount will settle on the bottom. This biofilm layer is good for the tank, which may remove additional bacteria and metals from the water. The Wisy smoothing inlet calms rainwater as it enters the storage tank, to aid in the prevention of agitation of sediment at the rainwater inlet. The smoothing inlet also helps aerate collected rainwater by directing the water upward and outward, avoiding disruption of the biofilm layer and also maintaining water quality in the tank.

A Wisy floating suction was used on the suction side of the solar powered pump (above) to further screening prior to pressurizing and filtration.

The floating filter should never clog, since the harvested rainwater is filtered before entering the tank. The filter will take water from just below the surface. Water at this depth is of the highest quality in the tank, because any particulate entering the tank will either settle to the bottom, or float on the surface.

Rainwater Collection Steel Tank Photo Gallery


Workers install a large metal tank outdoors on a construction site.With 15 years of experience in the rainwater collection industry, RainBank has assembled a photo galleryof some of the steel tank installations we’ve completed.

With many builds located in the Seattle area, RainBank also has severalprojects located in the Pacific Northwest, like Portland, OR, Vashon Island and Lopez Island, in 2014, RainBank also directeda steel tank build in Galveston, Texas for the Sea Scouts.

Please click here to visit the steel tank photo gallery and stay tuned for more photos and videos to come.

Things you should know about RainBank Rainwater Systems:

  • Ken Blair (President) holds the ARCSA AP and Inspector Specialist accreditations and is a Lifetime Member. He is also the ARCSA northwest regional representative
  • RainBank’s Management Team covers a wide range of expertise, including engineering and plumbing
  • RainBank is a full service rainwater systems company – design, installation and consultation
  • RainBank designs systems for potable (whole house use or supplemental) and non-potable for irrigation, toilet flushing and laundry.

Contact us now for more information about how to add rainwater harvesting toyour residential or commercial project.

El Nino Affects Snowpack and Water Supplies


Side-by-side satellite images showing green and dry landscapes.Forecastsindicate that the El Nino weather pattern is expected to continue bringing wetter, warmer forecasts for the winter, and continued dryer weather for next summer for the west coast. It is expected that we will see the same weather this next year as we did this year. Less snowpack in the Cascades will mean once again a limited amount of water formunicipal water supplies. A warmer and wetter winter will fillreservoirs, but Seattle’sexperience this year showed that without that snowpack to replenish stored levels, supplies fall short as summerstretches on. Many small waterdistricts in the Pacific Northwest found themselves runningextremely low, while Seattle Public Utilities is continuing to ask its customers to scale back usage.

There has been an increase in interest in rainwater collection for single-family residences in Seattle and other areas of WesternWashington this summer for potable and non-potable systems. Non-potable systems are being sought primarily for irrigation, but the real increase is in whole house potable demand. As our population in the Seattle area has increaseddramatically and drier conditions in the summer are causing higher demands, many arepreparing in advance for next summer.

A well-designed and installed rainwater catchment system can provide water to a single-familyhousehold year-round or supplement city water use during the summer. A non-potable system can ease the demand on city water by using collected rainwater for irrigation during those dry periods. Many of RainBank’s customers are commenting once again “that this is the right thing to do” – a messagethat I used to hear often before therecession. Folks want to do the right thing for the environment regardless of acrisis.

We must take population growth and protection of our natural resources seriously. Water is the one thing we cannot do without.