Category Archives: Rainwater Catchment

Rainwater Catchment

Greater Puget Sound Area Is Thirsty for Rainwater Collection


Modern office building with rooftop greenery and pool area.Thirsty for Rainwater Collection.

With more than 15 years’ designing and installing rainwater collection systems in and around Washington State, RainBank moved operations to the Seattle area four years ago to meet demand for Seattle and the Puget Sound region (and beyond… see Sea Scout Basephoto above).

Close-up of a worn, metallic fountain pen nib on a black surface.Experience and knowledge.

Seeing increased interest, we recognized the need for an experienced and knowledgeable designer and installer in the greater Puget Sound area.

Credentials Matter

Most counties in Washington State require an American Rainwater Catchment Systems Association Accredited (ARCSA) professional or Washington State licensed engineer with experience in water systems to design a potable rainwater catchment system. If the system requires pumping or filtration, a Washington State licensed plumber is required for installation of a rainwater collection system and is subject to permitting and inspections by the Department of Health. RainBank Rainwater Systems met this challenge long before it was required by the state legislature with ARCSA accreditation and in-house, licensed plumbers.

Steel Tanks

Close-up of a worn, metallic fountain pen nib on a black surface.

In the commercial market, there has been a need for competitive pricing for steel water tank sales and installation. After more than five years of commercial installations in the Seattle area, RainBank is filling that need as the Northwest Regional Dealer and certified installer of Pinnacle and Contain Water Tanks.

Rainwater collection is moving from niche to mainstream.

A full-service company offering design, consultation, cost analysis, permitting, construction, and component sales, RainBank’s experience and knowledge is unmatched in the industry.

RainBank is there for you to get the job done right the first time.

Environment, Rainwater Catchment, Residential Rainwater Collection

Where Will the Next Water Crisis Happen?


A school of fish swimming in shallow, rocky water.Flint Water Crisis Deepens

As investigations deepen, the Flint, Michigan water crisis has exposed “leadership failures at every level” (according to an article in the Detroit Free Press quoting U.S. House Oversight Committee Chairman Jason Chaffetz), citing “festering” long term problems and questioning the EPA’s level of attention as lead levels in Flint’s water rose to poisonous intensities.

As such, we’d like to bring you a throwback Thursday post to highlight an agency that is being proactive about ensuring that homeowners have access to and control of their water supplies.

Last year, the Skagit County Planning Department issued its first residential building permit with rainwater collection as the sole source of water. This move came in response to the in stream flow rule, which impeded Skagit Valley residential property development. Read more…

We here at RainBank believe there are good folks at governmental agencies who are being progressive about ensuring public health and safety by providing ways for residents to have access to clean, safe drinking water – a basic human right.

Rainwater Catchment, Residential Rainwater Collection

Underground Rainwater Storage

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Close-up of a worn, metallic fountain pen nib on a black surface.More urban customers are inquiring about underground storage for rainwater catchment systems. With limited space in a typical city backyard and the desire to keep what little space there is unobstructed by large cisterns, buried tanks are the solution.

Close-up of a worn, metallic fountain pen nib on a black surface.The decision to choose underground storage comes with added costs.

Below grade cisterns require considerations and costs that are not typical with above ground storage. Structural requirements, added excavation, and drainage are factors in costs. The costs of engineering and materials add to the manufacturing costs of below grade cisterns. Added labor, such as excavation, more than likely will include the need to export soil off the site and the import of drain rock. Buried tanks require cement hold-downs and proper drainage of tank placement to eliminate possible floatation of the tank when water levels in the tank are low and ground water levels are high. Below grade cisterns can be 2 to 2.5 times more expensive than above ground to design, purchase and install properly.

Close-up of a worn, metallic fountain pen nib on a black surface.Experience in below grade cistern design and installation is the key factor in the success and costs of the project. Understanding the added costs before hand will help ease sticker shock.