Berkey Light Gravity-Flow Water Filter
Gravity filters are more effective than other types of water filter, because the water drips slowly through the ceramic elements, and this process removes almost all the contaminants in water. The...
View ArticleMost Efficient Water Cleaner: Terra Cotta Gravity Water Filter and Cooler
Here is another efficient ceramic water filter. This gravity filter has a hand-made terra cotta base, which cools the water using natural convention. We consider it metaefficient because: its has...
View ArticleVery Efficient: Pocket Filter by Katadyn
This is a serious portable water filter from Katadyn. It’s efficient because it uses a ceramic filter, which will not let anything larger than 0.2 microns through. It also has a long life — it will...
View ArticleSlow Sand Filters
Slow sand filters are perhaps the most efficient means of producing clean drinking water. Slow sand filters rely on biological processes for their action rather than physical filtration or...
View ArticleProducing Drinking Water from Rain Water
It is possible to produce pure drinking water from rain water using a combination of devices costing around $300 total. Here’s how to do it: Install a roof washer and a rain barrel ($200). A roof...
View ArticleHow To Filter Your Drinking Water Very Efficiently
I’ve spent quite a bit of time researching how to filter drinking water effectively. Originally, I was interested in filtering the rainwater that falls on my roof. But I had to put that project on the...
View ArticleUpdates From The MetaEfficient Kitchen Labs
This summer I’ve been working on food-related optimization projects, here are some updates: I now have subscriptions with two local farmers (through a CSA or Community Support Agriculture). One farmer...
View ArticleThe Best Water Filters
The Best Water Filters: A Review There are a lot of misleading claims about water filters. Many filters are marketed with general statements like “improves taste and odor”. But filter manufacturers...
View ArticleOvopur: The Art Of The Water Filter
Ovopur Blanc Water Filter I’ve been testing an Ovopur water filter from Aquaovo, a company based in Montreal. This filter is certainly the most attractive I’ve come across. My eye is often drawn to its...
View ArticleBone Char: A Very Effective Filter
Bone Char — the name is perhaps…uninspiring, but it’s one the most underrated water filtering substance I’ve encountered. It excels at removing fluoride from water — it can remove 90% of fluoride in...
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