Friday, June 29, 2018

You actually don't have to have uranium in your drinking water

When I first saw the story on ABC's 7.30, I assumed that the reason no action had been taken to remove uranium out of bore water used in some remote aboriginal communities might have been because it's really hard to filter it out.   (Would have to be a pretty fine filter, I figured.)   In fact I thought that it sounds like a good reason to propose closing down certain remote settlements, if you can't even get reliable water at them.

And then I Googled the topic and found that getting uranium out of ground water is far from an uncommon problem in the West, and this, from an American local government health department:
Point of use devices are installed directly at the tap and are used to reduce contaminants at that location. Several technologies are available that are effective in removing uranium. For most households, a single point of use treatment system on the drinking water tap will be sufficient to provide safe water for drinking. Point of use reverse osmosis (RO) and distillation treatment will remove many different contaminants from your drinking water, including uranium and radium.

Reverse osmosis is a process that filters most impurities from water by passing it through a fine membrane. Contaminants such as uranium are left behind on the membrane while treated water passes through. You may need to install a pre-filter before the reverse osmosis system. The World Health Organization reports that reverse osmosis treatment will remove 90-99 percent of uranium. Point of use RO systems are available from a variety of different sources, and WUPHD recommends that you purchase a unit which is “NSF certified for radium 226/228 reduction”. (NSF does not offer a uranium certification.) For more information, please visit the NSF website.

A reverse osmosis system typically costs around $300 and you can save money by doing the installation yourself. A point of use RO system will typically produce about 7 to 14 gallons a day of drinkable water. This amount of production should meet the cooking and drinking needs of a typical household. To fix a uranium or radium problem, it is necessary only to treat the water you drink because uranium gets into the body through ingestion. It is safe to take baths using untreated water because uranium or radium is not absorbed through your skin.
 Um, that doesn't sound like it's a difficult problem to fix at all.

What on earth is the reason Australian governments are saying it's years away before it can be done here?   

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