Monthly Archives: January 2011

The pond filter experiment

Posted on January 31, 2011 by Dave T

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

Posted on January 26, 2011 by Dave T

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 →

Posted in slow sand water filter study and construction | 2 Comments

Just a reminder. . . .

Posted on January 25, 2011 by Dave T

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”

Posted on January 7, 2011 by Dave T

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