Yearly Archives: 2011

DIY first flush diverter provides cleaner roof water

I have part one of the video on the diverter up on YouTube. It is here: Some questions included how does the pipe seal if there is only glue on one part? How long are the pieces? The friction fit … Continue reading

Posted in slow sand water filter study and construction | 3 Comments

New diverter construction

The new diverter is finished and installed. A video will be out when I get time to edit all the files. In the mean time here are some screen shots of a few of the videos and some photos of … Continue reading

Posted in slow sand water filter study and construction | 7 Comments

Slow sand filter flow rate

It is now March 8 and the flow rate test has been done. I am feeling much better, and physical work is getting easier. The 4 litre container is used now instead of the 12 litre. It is a “gallon” … Continue reading

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Slow sand filter update

It is now March 1 2011, and we are nearing the end of the 4th winter for filter 1, the third winter for filters 2, and 3 and the first winter for the pond filter experiment. February, here was one … Continue reading

Posted in slow sand water filter study and construction | 8 Comments

The pond filter experiment

The pond filter has been running for about 7 months now. It has frozen solid twice, however it did thaw out both times and it is still working. The most recent test showed less than 2 coliform bacteria per 100 … Continue reading

Posted in slow sand water filter study and construction | 9 Comments

State policy on rain barrels and roof water harvesting in Washington state

To clear up misconceptions about the legality of rain barrels, rain water collection and harvesting rainwater in Washington state check these links to the Washington state department of ecology: http://www.ecy.wa.gov/news/2011/016.html http://www.ecy.wa.gov/programs/wr/hq/rwh.html Please, PLEASE check the Wa. state D.O.E. website links … Continue reading

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Just a reminder. . . .

On this blog, questions and comments relevant to roofwater harvesting / rainwater harvesting, biological sand water filters, and sustainable water filtration practices are encouraged. Also questions regarding the content of slowsandfilter.org, roofwaterharvesting.org, and shared-source-initiative.com/biosand_filter/biosand.html will be answered here. Comments are … Continue reading

Posted in slow sand water filter study and construction | 5 Comments

Science, technology, safe water, biological water filters, and “beliefs”

Thirty eight years ago we had a narrow deep hole dug in the ground to get at the water down there. When we hooked up the pump, and the water ran clear we drank from the well – we trusted … Continue reading

Posted in slow sand water filter study and construction | 1 Comment