Category Archives: slow sand water filter study and construction

Here is a link to the rainfall records we have kept here in western Washington state since 2005. We are in the process of updating the webpage coding. Google has removed our listing for reasons unknown to us; possibly because … Continue reading →

So far, this year has been mild. Winter was cold but no huge storms. 4 of the filters here are still working. The others need work. The first filter we built in 2007 is still working. The fish pond filter … Continue reading →

Filter 1 is still functional; running since 2007. Hopefully we can have some tests done soon. The other filters, all but two, are running, but very slowly. The first pond filter is still functional. The pond container, and pump was … Continue reading →

The original filter, started in 2007, is functional, as of today. The first and second pond filters are functional also. Watercress is growing in the first pond filter quite nicely. The water is crystal clear in both ponds. The fish … Continue reading →

The weather has eased up a bit. No freezing for about 10 days now. The filters are starting to flow again. Hopefully we can get some testing done now, after some minor repair work. The snow and ice caused some … Continue reading →

As of July this year, this blog has been on the net for 14 years. The oldest filter here has been running for 15 years. This winter is starting out to be severe, for this location. It has snowed 8 … Continue reading →

It is now November 9 in 2022. All but one of the filters are functional. We are now able to start working on the filters again, as we have fully recovered from the back injury. We may be able to … Continue reading →

It is now June 17, 2022. All of the filters are still in place. Some work needs to be done on several of the filters. We have just had a major website update/change completed. All our websites and blogs have … Continue reading →

Read the info at this link: https://techxplore.com/news/2022-05-treatment-efficiently-nanoplastics.html From the article: “Both in laboratory tests and in a larger test facility located directly on the premises of the Zurich Water Works, the biologically active slow sand filter was the most effective … Continue reading →