Monthly Archives: August 2015

Rainwater Catchment, Rainwater Harvesting Education

When Will Your County Adopt Rainwater Collection for Potable Use? 


Children exploring a shallow water patch on a rocky riverbed.Snohomish County has over 1,000 water districts that are close to drying up, which ramps up theneed to purchase potable water from the city of Everett. Spada Lake is dangerously low, which jeopardizes water availability for fighting fires

Pierce County faces a similar issue – small water districts are running out of supply, forcing the potentialfor needing to purchase water from the city of Tacoma. The Center for Urban Waters, led by the University of Washington Tacoma, promotes rainwater collection, while some of the districts are not fully supportive of the concept.

Is it time for both of these counties to adopt RWC for potable use?

Snohomish County is surrounded by other counties that have expanded RWC to include potable usage. These counties recognize that potable use of rainwater for single-family dwellings is not a threat to public safety or to the revenue of their water districts. King, Skagit, Whatcom, San Juan, Jefferson, and Island counties all accept the benefits of potable RWC for single-family dwellings.

RainBank Rainwater Systems along with support from the American Rainwater Catchment Systems Association (ARCSA) will continue to educate these two counties as well as others by offering seminars, workshops, and general discussion on the benefits of RWC to motivate them to allow potable usage of rainwater.

Please watch the recently aired KIRO News report about small water districts that are running out of water.

Photo courtesy of King.

Environment, Infrastructure

Heavy Metals Spill into Colorado River

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Kayakers paddling on a river with unusual orange-colored water.
People kayak in the Animas River near Durango, Colo., Thursday, Aug. 6, 2015, in water colored from a mine waste spill. The U.S. Environmental Protection Agency said that a cleanup team was working with heavy equipment Wednesday to secure an entrance to the Gold King Mine. Workers instead released an estimated 1 million gallons of mine waste into Cement Creek, which flows into the Animas River. (Jerry McBride/The Durango Herald via AP)

This week, the Environmental Protection Agency accidentally dumped 1 million gallons of heavy metals from an inactive mine into the Cement Creek in Colorado. A tributary of the Animas River, the sludge, which turned the water an eerie orange color, could be seen snaking toward New Mexico on Wednesday.

The Denver Post reports EPA workers caused the spill while they were investigating acid discharge from Gold King and three other mines in the area. The paper also quotes Dave Ostrander, the EPA’s regional director of emergency preparedness assessment and response, as saying, “We are very sorry for what happened. This is a huge tragedy. It’s hard being on the other side of this. Typically we respond to emergencies; we don’t cause them. … It’s something we sincerely regret.”

According to the NY Times, “E.P.A. officialsconfirmed the leak contained heavy metals, including lead and arsenic, but said it was too early to know whether there was a health risk to humans or animals. The river was closed for recreational and other uses, but officials said water sources should be safe.”

Now this writer is no expert, but it’s difficult to imagine that wastewater in the river will not affect the river’s eco-system. Further questions arise as to how will this tragedy impact the plants, fish and wildlife that depend on the river to survive?

The EPA is evaluating the human health risk, but it is reported that at least two of the heavy metals in this spill can be “lethal for humans in long-term exposure. Arsenic at high levels can cause blindness, paralysis and cancer. Lead poisoning can create muscle and vision problems for adults, harm development in fetuses and lead to kidney disease, developmental problems and sometimes death in children”.

This is serious stuff. Residents along the river are being asked to “minimize water usage”. At least seven water utilities shut down their intake valves ahead of the plume to keep it out of their systems and farmers also closed the gates on their irrigation ditches to protect crops.

With news of toxic algae stretching from California to Alaska, fracking chemicals contaminating wells in Pennsylvania and now heavy metals dumped into the Animas in Colorado, just how safe are our water supplies?

Rainwater Catchment

At What Point is Rainwater Collection Too Expensive?


Water flowing smoothly from a pipe with droplets splashing around.Collecting rainwater for potable and non-potable use should carry the importance of what it is “a safe, reliable source of drinking water” that protects the health and welfare of its users. What is that worth? At what point do we consider rainwater collection to be too expensive? Only hire those that are qualified, not those who are the cheapest.

As rainwater collection becomes an increasingly accepted, sustainable method of water conservation, costs have risen due to design and implementation regulations, as well as major components improvements. As in any industry, qualifications of designers and installers are, and should be scrutinized.

Liabilities need to be addressed for potable and non-potable use, not just for the designer or installer, but for the owner of the system as well.

For non-potable application, care must be given that fixtures, as well as plumbing, are clearly identified as “non-potable water unsafe to drink” and plumbed in such a way that cross contamination to potable water does not occur. A reduced pressure backflow assemblies (RPBA) or air gap must be installed on city water side of plumbing if non-potable water is connected to any building or dwelling plumbing system. This protects the safety and welfare of users and their guests. A qualified designer/ installer must remain current with plumbing codes that are in effect for rainwater collection.

For potable application, great care must be given to design and installation, after all we’re talking about drinking water and the safety of the user and their guests. EPA standards of quality of drinking water must be met, or the designer, installer, and homeowner can be liable. The American Water Works Association (WWAA), the American Society of Plumbing Engineers (ASPE) along with the American Rainwater Catchment Systems Association (ARCSA) have written plumbing code for RWC which are continuously being updated. The designer needs to know what he or she is trying to remove from the raw water and use the best method of filtration and disinfection to protect the safety and welfare of others. All components including storage, conveyance, filtering, and disinfection must meet National Sanitation Foundation (NSF) requirements for drinking water.

Many counties in Washington State, including King County, require a licensed engineer, with experience in rainwater systems, or an individual who holds a class B water designer certificate or an ARCSA AP. Professionals that are installing pressurized systems are required to have a plumber’s license. This regulation helps protect the health and welfare of the system owner. ARCSA APs must submit continuing education credits to stay current with their endorsement.

We’ll let you decide when RWC is too expensive, but encourage you to consider the value of having your system installed safely and to meet city, county, state and federal mandates.