A Field Guide to Biochar Water Treatment
JKLow-cost DIY drinking water treatment using biochar to remove chemical pollutants.
| Platform |  | Pricing | Freemium | Publishes | Monthly |
|---|---|---|---|---|---|
| Issues | 108 | Founded | 6 years ago | Last Issue | 3 months ago |
| Active | |||||
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joshkearns.substack.comLatest Issues
Puerto Rico is Superfun(d)!
I recently returned home from leading a workshop on decentralized water treatment with biochar in Puerto Rico. It was my first trip to the island, organized by the gracious and talented directors of the Caribbean Agroforestry Institute, Ste...
Two upcoming workshops
Registration is open for both of these and spots are limited, so get in there!
Caribbean Agroforestry Institute, Camuy Puerto Rico, Feb 28 - Mar 1
link for registration
Organic Growers School Conference, March Hill NC, Ma...
Purificadora San Elias
A new groundwater treatment system serving the community of San Elias in Guanajuato state (central Mexico) was inaugurated mid-January 2026.
Thanks to the diligent tech team of Caminos de Agua and members of the San Elias community for ma...
Solar Biochar Oven Version 2.0
FYI I have appended the Solar Biochar Oven how-to manual with information on the latest iteration, Design Variation 2.0.
Variation 2.0 was developed after several months of heavy use of the previous version (Version 1.4). It represents adv...
Project updates & workshops
A quick note of some things in the pipeline, more details to come soon…
Solar Biochar Oven Version 2.0
Based on several months of heavy usage of the Solar Biochar Oven we have made upgrades to the design.
It’s now simpler to constr...
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| Subscribers | Engagement | 70 | Monthly Web Visits | ||
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| Ranked Keywords | 19 | Monthly Search Traffic | Top Keywords |
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Authors
The writers behind this newsletter.
I am an environmental chemist and engineer with a specialty in appropriate technologies for low-resource settings.
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