All posts by Ken Blair

A rainwater collection systems designer and consultant, Ken has designed and installed residential and commercial systems, primarily in the northwest United States for more than 10 years and, in 2014, began consulting and managing builds in other states. Ken is an accredited ARCSA Professional Designer / Installer and Life Member, the Northwest Regional ARCSA representative and advisor to its education committee and is available to speak about Rainwater Collection Systems design and builds. Ken is a United States Navy veteran, having served on active duty during the Vietnam War era. A career entrepreneur, Ken created a new business focus with a commercial dive company in Hawaii in the mid 1980′s to respond to and clean up oil spills, oil spill equipment training, service and maintenance for the oil co-op service industry. Ken is passionate about having a positive impact on the environment and is also a founding director of BANK-ON-RAIN (2011-2014), whose mission is to create grassroots solutions for rainwater collection for consumption and agriculture in developing areas of the planet.
Infrastructure, Rainwater Catchment

Duke Energy Pleads Guilty to Violating Clean Water Act


Couple embraces while observing a power plant across a water body with dead trees.In a North Carolina courtroom, Thursday, Duke Energy, the country’s largest electricity provider, plead guilty to 9 criminal violations of the federalClean Water Act.

According ABC News, “as part of a negotiated settlement with federal prosecutors, Duke agreed to pay $68 million in fines and $34 million on environmental projects and land conservation that will benefit rivers and wetlands in North Carolina and Virginia.”

Prior to the settlement, Duke spokeswoman Erin Culbert told The Associated Press that any homeowner who gets a state letter warning of a tainted well will get safe bottled water from Duke, if they request it. While denying responsibly for the problem, Culbert said Duke simply wants to provide the homeowners “peace of mind.”

RainBank hasquestioned the safety of our water supplies with thenewsaboutToledo’s water supply affected by a toxic algae bloom – disturbing over one half million customers, and a coal spill in the West Virginia River that contaminated drinking water. The Keystone XL pipeline poses a potential threat of contamination to the Ogallala Aquifer in Nebraska. Additionally, it’s being discovered that wells are being contaminated with fracking chemicals.

We can see contamination events are happening more often, which affect our safe water supplies – and provide another good reason to support decentralized water and rainwater collection.

How-to, Rainwater Catchment, Residential Rainwater Collection

4 Step Rainwater Harvesting Systems


Technical blueprint with a metal ruler and triangle on top.RainBank Rainwater Systems is proud to announce that, beginning June 1st, we will bea dealer of WISY Products and the 4step system. A rainwater system designed with WISY products requires minimal maintenance and never needs replacing.

Step 1. WISY VORTEX FILTER

Before entering the tank for storage, rainwater should be both filtered and aerated. Filtration removes large particulate matter, which frequently both carries and feeds bacteria. Removal of this particulate matter, along with oxygenation of the water, greatly reduces the amount of harmful bacteria in the tank. WISY pre-tank filters accomplish both of these tasks,protecting the water quality in the tank.

Step 2. WISY SMOOTHING INLET

While filtration removes most of the sediment and bacteria before rainwater enters the tank, a small quantity will settle at the bottom of the tank. This biofilm layer is beneficial for the tank and may remove additional bacteria and metals from the water. The WISY smoothing inlet calms rainwater as it enters the storage tank to prevent the agitation of sediment at the rainwater inlet. The smoothing inlet also helps aerate harvested rainwater by directing water upward and outward, avoiding disruption of the beneficial biofilm layer and preserving water quality in the tank.

Step 3. WISY FLOATING FILTER

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. In RainBank designed systems, the floating filter acts more as an uptake point for the pump than a filter; thus, the floating filter should never require maintenance.

The floating filter consists of a polyethylene ball and stainless steel filter and is supplied with a standard 7 foot length of food-grade suction hose. The nozzle connections are available in 1 1/4″ and 2″ sizes.

Step 4. WISY OVERFLOW DEVICE

To prevent backup in the system during heavy rains, the storage tank should always include an overflow protection device. The WISY overflow device has a flapper valve, which allows water to overflow but protects water quality in the cistern with backflow prevention and vermin protection. The overflow device also contains an angled opening to provide skimming of small buoyant debris, such as pollen, on the water surface.

Be sure to visit us again as we roll out our products and services associated to the 4 Step System. If you have questions, leave them in the comments section below, or contact us.

Rainwater Catchment, Residential Rainwater Collection

Project Update: Two Sole Source Potable Rainwater Systems

2 Comments


White truck crossing a narrow suspension bridge over a river.RainBank Rainwater Systems was contractedto install a 10,000 gallon, sole source, potable rainwater catchment system in Baring WA, just east of Index. The system was designed by Chris Webb, PE of Herrera Environmental Consultants for a single family dwelling. The system will provide potable whole house usage as the only source of water for this 839 square foot home. With 41.2″ annual rainfall, the system is capable of supplying 100% of the household demand based on occupant’s usage requirements.

The small parcel size and the small bridge over the Skykomish bridge limited the feasibility of safely drilling a well and there is no public or community water system. RainBank Rainwater Systems always enjoys a challenge – and this one has many – from a very small lot with wetlands, large boulders throughout the property, the bridge, and location of site

Two large black water storage tanks in a rural setting.RainBank Rainwater Systems hasrecently begunconstruction of another 10,000 gallon, sole source, potable rainwater collectionsystem in the Skagit River Basin, which has been affected by the in stream flow rates, along with a well drilling moratorium. The system was also designed by Chris Webb and Herrera Environmental Consultants for a single family dwelling. Again, the system will provide whole house potable water as the only source of water. The house is3500 square feet, so 33.2″ annual rainfall will meet the daily demand for 95% of the days in this model with no change in use. The reality is, that the occupants would decrease usage during times of drought and therefore the 2 – 5,000 gallon cistern volume is considered capable of supplying 100% of domestic use.