Roof water (rainwater) harvesting along with slow sand filters will soon become a necessity rather than a curiosity. This blog is an attempt to increase awareness of water supply options available to the individual, and provide a means for discussion. If you are located in the Pacific northwest part of Washington state, and would like help setting up a rain water / roof water filtering system leave a message at the bottom of this page in the comment space with your contact information, and we will get back to you as soon as we are able.
The work described here takes place at the edge of the foothills of the Cascade mountains in western Washington state, U.S.A. about 30 miles northeast of Seattle Washington. All of the testing and work done here is based on the environmental conditions here in this small part of the world. The image at the top of the blog page is Eagle Falls, which is located in the Cascade mountains. The background image is the Pacific ocean beach on the coast of Oregon.
The information posted on this blog by the author regarding the design, construction, and operation of small slow sand water filters is based largely on actual experience, which has been ongoing for 7 years now; and will continue as long as physically possible. The websites slowsandfilter.org, shared-source-initiative.com/biosand_filter/biosand.html and roofwaterharvesting.org are connected with this blog through the same author and similar topics. The study of existing peer reviewed scholarly articles along with documentation from other websites is also used. Links to these sources can be found here, and here. The tests on water flowing into and out of the filters are done by EPA approved laboratories and the results are posted on the websites noted in the links above. Neither the author, nor this blog are connected with any religious or political group(s) or organization(s).
Please keep your comments and questions relevant to rainwater and/or roofwater harvesting, biological sand filters and sustainable water purification practices studies.
Important: Do not drink the water from any of the filters described in this blog or on the following websites associated with this blog without having the water tested by your local health department. Know that each owner of a filter is totally responisble for its proper operation and water quality. Even if a filter is built exactly like the ones shown on these websites, it is still possible for it to produce contaminated water. This blog, and the 3 websites associated with it, and any communication with the author do not make water 100 percent safe to drink. Public water systems are monitored by professionals and still there are contamination outbreaks that do occur.
Please, do not confuse the devices described on the above mentioned websites with the “Biosand filter”. The Biosand filter is an entirely different design, and has been thoroughly tested in the field and in use. The Biosand filter is NOT EXACTLY the same thing as the filters studied on the websites associated with this blog.
You have been advised.