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Boy Are Your Pipes Wasting Water!

Down the Drain

The Cost of Wasted Water Waiting for it to Heat

So . . . I finished taking out the trash, garbage, and recycling materials to the curb and, as is my wont, I took to the kitchen sink to wash my hands. Because I’m far more acutely aware of our water use due to the drought, I ended up washing them with cold water; I just didn’t want to let the water run long enough to get hot.

That got me wondering about how much water could be saved if we had instant water heating. I did a little research into tankless water heaters and quickly found out how little the technology seems to have progressed in the last 10 years or so. Most articles I came across suggested the break-even point for installing one that was reasonably efficient/effective would probably exceed your lifespan.

In the process, I came across figures for the number of gallons of water an average household runs down the drain while waiting for the hot water to push out the cold that’s in the pipes between the sink/tub/shower where it’s going to be used. The figure I came across is 26 – 29 gallons. I also looked at the US Census to see how many households there are in California. The number of housing units listed, as of 2013, is 13,790,495.

So, taking the number of households and multiplying by the more conservative number of 25 gallons per day down the drain, I determined the following. If we could find a way to heat water directly at the point of use, thereby not wasting that 25 gallons per day, the State of California would save 125,838,266,875 gallons of water per year. As it turns out, that’s a third of one percent of the water in Lake Tahoe. Drop in the bucket, or significant savings? Probably doesn’t matter, unless you’ve got an idea for how to provide on-demand, on-location hot water . . . cheap.

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About Rick Ladd

Born in 1947, I was an officially retired pensioner, but in January of 2015 I returned to work as a contractor at Aerojet Rocketdyne. I remain intensely interested in, and fascinated by, Systems Thinking, Knowledge Management, Decision Intelligence, and Business in general. I am also conversant in such concepts as innovation and ideation, collaborative tools and strategies, crowd sourcing, and the use of social media to accomplish goals ranging from improving business processes to promoting small retail businesses. While "retired" I did a little bit of freelancing as an editor/proofreader, as well as some technical writing. There's lots more where that came from. Need some help? Perhaps another set of eyes? Contact me. The first one's free! ;0) View all posts by Rick Ladd

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