Author Archives: filter_guy

Flow Tests on Slow Sand Filters 1,2,3,4 and 5 from our website slowsandfilter.org

This is a selection of information from our website. There will be more to come in the following months. This information is part of our ongoing research that started back in 2007. Fourteen years of work, so far. We will … Continue reading

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Update, July 15, 2021

Wow, last month we wrote that the weather here has been “normal”. Nothing could be further from the truth. We had 104 degrees Fahrenheit here June 28, 2021, and that was in the forest in total shade. So hot it … Continue reading

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Blog update June 18, 2021

Filter 1 is still working, and is in the process of being tested again. We are running water through it and hope to be able to have a professional testing done soon. Another pond filter will be put together this … Continue reading

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May 2021 update

It is now May 22, 2021. All the original slow sand  filters here are still functional. We have 9 slow sand filters running here. Four of them are pond filters. The latest pond filter is still being tested and no … Continue reading

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2020 slow sand filter update

It’s now December 16, 2020 covid19 is still here and, consequently,  we still cannot have any tests done by commercial testing facilities. Thankfully, the horrific political situation in this country is somewhat calmed down and science will now be respected … Continue reading

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Slow sand filter update August 8, 2020

All of the original filters except one are still active and running. As of last month, this blog has been here for 12 years. All this time we have been studying and carefully observing the ability of naturally occurring processes … Continue reading

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Update for May 2020

All but one of the slow sand filters here are still working. All of the damage to the cistern has been repaired. Filter 1, which was started in 2007 and first tested in 2008 is still running. No  tests have … Continue reading

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Update for 2019

As of August 26, 2019 most of the winter storm damage from last year’s snow and ice has been repaired. The cistern roof collapsed under  the weight of the snow. Pipes were broken and water contaminated. The repair work was … Continue reading

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Slow sand filter update

It is now June 15, 2019; and this blog is approaching its 11th year on the net documenting our studies of slow sand filters. All but one of the filters are still running, including two of the pond filters. ( … Continue reading

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Slow sand filter video

Here is a link to a video on YouTube of the first filter we set up (Filter 1). It was uploaded in 2007: https://www.youtube.com/watch?v=1ca6ZbZePBY Now the story of the video: In 2007, we uploaded a video of one of our … Continue reading

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