Tag Archives: design

Potable Rainwater Collection Adopted in Snohomish County

Snohomish County adopts rainwater collection for potable usage for single family residence.

In September 2015, we published a post recommending that both Snohomish and Pierce Counties adopt rainwater collection for residential potable usage. The necessity for adoption was presented considering a 30% reduction in water availability was predicted in the next 35 years.

The Seattle Times reported about the Hirst Decision and its effects in rural development in many counties throughout Washington. These counties should follow the lead of counties before them by providing a sustainable, viable water rights decision on single family residences that allows for potable rainwater systems. It is the only fair decision to be made.

We congratulate Snohomish County for having a progressive approach to water conservation.  Adding to our list of firsts, this week, we will install the first potable residential system in Wahkiakum County upon their acceptance of a RainBank Rainwater Systems design.

RainBank Rainwater Systems has been Designing and installing Rainwater collection for residential potable usage for over 16 years. We will continue to promote, advise, and educate rainwater collection as a viable, sustainable water source in all counties in Washington State.

We look forward to helping those in Snohomish County achieve water rights for potable usage using rainwater collection.

With Complex Permitting, Choose the Right System Designer / Installer

At the beginning stages of planning a rainwater system, be sure to choose a system designer / installer who will work with you to design and build the most effective and efficient system for your needs. You especially want a company that knows how to navigate the complex permitting process.

Here is some information we originally published last year, which, if you are new to our blog, can be helpful as you plan your own system.

RainBank Rainwater Systems is a full-service rainwater systems contracting company offering design, permitting and construction throughout Washington State and surrounding areas.

RainBank’s rainwater systems are custom designed to meet the expectations and needs of our customers. Whether commercial or residential, potable or non-potable, RainBank works closely with architects, designers, builders, and individual homeowners who appreciate face to face consultations and flexible / scalable solutions. Rainwater collection is appropriate for small scale residential needs and large scale commercial applications. Rainwater collection can help mitigate stormwater runoff, while providing a viable water source for irrigation, wash down, toilet and laundry facilities. With proper design rainwater collection can supplement city water usage for both residential and commercial demands. If properly filtered and disinfected rainwater can provide whole house potable usage in many Washington State counties. Rainwater collection and use can be integrated into a drainage plan to meet the new 2016 storm water codes.

Underground Tank Construction3Permitting can be complex and sometimes frustrating, especially when the rules change. RainBank Rainwater Systems meets all requirements of permitting and engineering for our customers from city, county, and state agencies. We stay up to date on changing codes and permitting requirements, taking the guesswork out of the process. RainBank designs and assembles customized kits and plans for the do-it-yourselfers. Providing detailed designs and components with support from our engineering department.

FiltrationAll onsite management and installation are by ARCSA accredited installers and licensed plumbers. RainBank offers turnkey solutions and we guarantee our work. We specify and order all materials and components, delivered to your location and install, finalize and test your system. We only specify and install the most reliable components that meet our experience of over fifteen years installing systems. We train our customers on how to maintain their systems so they become their own purveyor of water.

Contain Water TanksAdding to our full-service philosophy, RainBank is a distributor of Contain Steel Water Tanks, carrying an unmatched 20-year warranty. We offer other products as a distributor or dealer including:

  • Wisy Products
  • Davey pumps
  • Premier plastic water tanks
  • GC Solenoid valves
  • National water testing
  • Filter cartridge replacement
  • Cascadian Back flush devices
  • Tuffy Screen basket Liners

Contact our team today.

Key Factors In Planning a Rainwater System

Water. We simply can’t live without it. Safety, cost and convenience are some key factors to consider when planning a rainwater system for commercial or residential use. Will the water be used for irrigation? Toilet or laundry facilities? Or, will you and your family want to drink it?

Here are some key factors to help you decide where to begin designing your system. We originally discussed this in a post from 2014:

Whether you are designing your own rainwater catchment system or having one designed by a professional, success of your rainwater catchment system design is dependent on some key factors.

What do I want to accomplish with my design of a rainwater catchment system?

Irrigation, toilet and or laundry facility, supplementary to well water or city water, whole house usage, and sole source are the main purpose of designs.

How much rainwater can I collect from my roof? Will it be enough to supply my needs?

One inch of rainfall per 1,000 square feet of roof will yield approximately 623 gallons of water. Evaporation, wind, and spillage account for 15 – 20 % of loss. A 2,000 square foot roof with 36″ of annual rainfall may yield 44,856 gallons. With an efficiency of 85%, that equals 38,128 gallons.

One inch of rain is needed for the healthy growth of plants. This equates to .623 gallons per week for 1 square foot of planting, which can add up rather fast, so keeping your irrigation needs small and giving consideration to drought tolerant plants is recommended.

Toilet and laundry facilities account for 49% of household usage. Designing and building a system for this purpose alone can cut your water and sewer bill in half. New construction is the best time to implement this type of system however, retrofitting plumbing in an existing home can be accomplished.

If the collection area is small or available space for storage is restricted, a supplementary system can be achieved with “slim line” style of cisterns or buried tanks. A small roof can still be effective in collection if used for a supplementary source to well water or city water.

Whole house usage, or potable water, can eliminate dependency on city water or well water, where you can still have city or well water as a back up during dry times. With the advanced filtration and UV disinfection offered today, safe, reliable drinking water for whole house usage will exceed the quality of most well and city water.

Now that you are considering what usage of collected rainfall would best suit your needs, we will discuss sizing, configuration, implementation, and maintenance of a designed rainwater catchment system in upcoming posts.

When you are ready to begin, RainBank will come to your site, discuss your needs and prepare a feasibility study – customized to your usage. There is a fee for this, which would be discounted from the cost when you contract with us to design or build your system. Use the form below to request a feasibility study.