Category Archives: rain water harvesing

Earth (config_earth.txt)

Science, measuring, telescopes, seeing, hearing, knowing, feeling, Internet, automobiles, cell phones, computers, medicine, electricity, solar power, wind power, hydro power, coal, oil, clothing, entertainment, news, weather reports, drought, bees, how do we get our food? how do we get our … Continue reading

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Rain water harvesting

We are now approaching our 8th year of slow sand filter operation here. The first filter we started back in 2007, filter 1, is still running, and producing clean clear water. It filters rain water run off from a composition roof. … Continue reading

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slow sand filter field tests

It is now October 2, 2014. Filter 1, and filter 4 have output water with no (0) coliform and no (0) e coli bacteria present. The cistern water that flows through filter 2, and filter 3, has 4 cfu’s of … Continue reading

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Five gallon slow sand filter

On September 27 2014,  after 6 months of continuous operation since this winter’s extended below freezing weather, a field test was done on the 5 gallon filters 10a and 10b. The tests indicate that filter 10a did not work satisfactorily. In … Continue reading

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Rain water harvesting and slow sand filter update

All the filters are still functional with the exception of one. The filter connected to the largest pond has been inactivated by damage due to the wildlife present here.  We are reasonably sure the damage was caused by raccoons. The … Continue reading

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Microcystin removal by slow sand water filtration

Will a slow sand filter take out microcystin toxins more effectively than conventional water filtration (rapid sand filtration) ? It appears as though the answer is yes: http://www.ncbi.nlm.nih.gov/pubmed/12203961  (information is in the abstract; access to the entire document requires a … Continue reading

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What if the public water system becomes unusable?

What would you do if you found out that the public water system had been contaminated by powerful toxins that could not be removed by boiling? Setting up a rain barrel or two might be a good idea. Incidentally, according … Continue reading

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DIY 5 gallon slow sand filter update

Back in September of last year, we started 3 small 5 gallon slow sand filters. They are still running, and marginally cleaning the water that runs through them. So far, the best water quality is from filter 10b, followed by … Continue reading

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Will a DIY slow sand filter produce potable water?

We continue to get questions about the filters we describe producing “potable” water. Again, I’ll try to address this issue. These filters are not 100 percent foolproof and they are not magical. They require maintenance and specific actions to keep them … Continue reading

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Five gallon DIY slow sand filter update

The five gallon slow sand filter experiment, mentioned in September of last year (2013) is still in progress. Due to some unforeseen issues, the EPA tests cannot be done as of yet. We will attempt to start some field tests on the three … Continue reading

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