complete nutritional protein. almanac.com/
content/three-sisters-corn-bean-and-squash
WATER STORAGE
One gallon per person per day — it adds up fast.
See page 94 to learn about water storage and
build your own 55gal drinking water drum.
WATER PURIFICATION
While folks have different opinions, bleach and
chemical purifiers are easy to use, very effective,
and have long shelf lives.epa.gov/ground-water-
and-drinking-water/emergency-disinfection-
drinking-water
A rock/sand/charcoal filter (Figure
Bb
) is
very easy to make and can handle all but the
worst biological offenders, turning your locally
found water into something that requires
minimal purification.offthegridnews.com/
how-to-2/how-to-build-a-bio-water-filter and
opensourcelowtech.org/bucketfilter.html
Use charcoal filtration as a first stage before
a LifeStraw or otherpurification device, to make
expensive devices last much longer.inhabitat.
com/6-water-purifying-devices-for-clean-
drinking-water-in-the-developing-world
Pasteurization is an overlooked but super
useful method — use heat from the sun to
purify water with radically less fuel than boiling.
solarcooking.org/pasteurization/solarwat.htm
Desalinization, i.e. removing the salt from
seawater, is typically an energy intensive and
industrial scale activity.Recent research and
some new products are starting to make this tech
viable for personal and family use. newatlas.com/
materials/desalination-family-drinking-water
and rainmandesal.com/portable-watermaker
MEDICAL SUPPLIES
Remember all those makerspaces 3D printing
face shields and other PPE in 2020 when supply
chains failed? Open Source Medical Supplies
helped organize critical design information
so that DIY PPE was safe and effective. They
continue to help people prepare for the next crisis
with 100+ open designs for masks, oximeters,
and other devices, and links to local response
groups. opensourcemedicalsupplies.org
+
32 makezine.com
EMERGENCY! Be Prepared
TripleQuest, CC BY-SA 3.0; KVDP, CC BY-SA 3.0; Hep Svadja; Ryan McFarland; Gregory Hayes; Jud McCranie CC BY-SA 4.0
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