A well designed rainwater catchment system can save a commercial building a lot of money that is just being flushed down the drain.
Many Seattle businesses are now incorporating rainwater collection in their new construction designs. Harvested rainwater is being used for irrigation, toilet flushing, and washdown, which saves business owners a significant amount of money.
Are you aware that the majority of water usage for a commercial building is toilet flushing? The average person will flush a toilet at work 3 times a day, so multiplied by the total number of people employed at that establishment, that can add up.
Do you know that storm water run-off charges are being added to your water and sewer bills? This adds dollars to operating costs.
Do you want to know how to save money on your commercial building project? Complete the form below.
RainBank Rainwater Catchment System’s president Ken Blair is a co founder and former director of 
Steel water storage tanks for rainwater collection are generally bolted together grain silos adapted for this use. Made of galvanized corrugated steel panels, wall panels average 17 – 20 gauge with the galvanized roof panels being high rib or flat seam with a center hatch at the top and an access hatch near the bottom of the roof. A felt pre-liner is used between the steel and the main liner to protect it from abrasion. Liners are usually polyethylene and NSF approved when used for potable application or PVC, which is generally used for non-potable. However, PVC can be used for potable, as long as it is NSF approved. RainBank recommends polyethylene for this application.
Steel water storage tanks offer durability and protection of the liner from UV rays, plus offers an industrial or rural architectural look. Many commercial applications use this type of storage for both of these reasons. Overflow lines can be installed on the outside of the tank, but it is recommended that any pressurized lines be underground and frost protected in our Washington climate.