Author Archives: Orpheus

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

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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

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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

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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

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A slight diversion . . . .

This blog is associated with three other websites listed below. The focus of each site is different. Those websites and portions of this blog are all authored by the same person. The three websites/pages are: http://www.roofwaterharvesting.org http://www,slowsandfilter.org http://www.shared-source-initiative.com/biosand_filter/biosand.html These websites … Continue reading

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Poisons from PVC pipe may be the least of our worries . . .

One of the recent comments on the last post, got me thinking: After reading this article: en.wikipedia.org/wiki/Polyvinyl_chloride and this article: www.truthorfiction.com/rumors/d/dioxins.htm and this article: www.pvc.org/FAQ/Do-products-made-of-PVC-contain-dioxins And this article about water (water dissolves more substances than any other liquid) ga.water.usgs.gov/edu/waterproperties.html and … Continue reading

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PVC pipe: does it poison water?

There have been some questions regarding toxins leaching from the pvc piping used in the filters described on the website referred to in this blog. Because of construction requirements we are limited as to our choices. Copper pipe has adverse … Continue reading

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Biomatic pond filter: The pond filter experiment

Just a short note here. The “pond filter” mentioned on the slow sand filter site slowsandfilter.org has been working for 15 weeks. The thing is put together without the elaborate “baffle” pipe assembly and using .35 mm effective size sand. … Continue reading

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