An Introduction to Point of Entry / Point of Use (POE / POU) Water treatment Systems in British Columbia

I strongly feel we should install POE systems on every home and let water treatment purveyors focus on the more complicated and costly contaminants. POE water filtration systems meet 4-log treatment which is the same standard mandated for communities by BC health authorities. The units could be serviced similar to the fireman who check fire extinguishers every year in business and rental establishments. Communities could increase their purchasing power by buying standard units in bulk. Click here or on the pdf file to learn more.

The USGS has an “Idealized diagram of a public water supply’s water distribution system.” It is ideal because water can become contaminated in distribution systems after the water filtration plant. The closer the water is treated before it is used the less contaminants it will contain. I don’t believe a chlorine residual, or secondary disinfection would need to be added to the distribution system to indicate contaminants in the distribution water if there was a POE system which would remove the chlorine and stop it from entering the environment as we wouldn’t have to drink chlorinated water or use it to water our vegetable gardens. Click here or learn more below.

Secondary disinfection is needed to prevent contaminated water in the distribution system from:

  • Treatment breakthrough
  • Potable water storage reservoirs
  • Cross connections and backflow
  • Transient contamination
  • Water main installation, breaks and repair

Click here or on the pdf file to learn more.

Idealized diagram of a public water supply’s water distribution system

Idealized diagram of a public water supply's water distribution system

(Credit: Paul M. Bradley, US Geological Survey. Public domain.)ThumbnailMediumOriginal

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