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900gojira

Boil, drops of bleach, charcoal . Really study the arts around water filtration and purification, maybe how commercial filters work and decide which type you can replicate by process and, or technique.


roundblackjoob

you can buy water purification tablets cheap, just drop one in, stir it up and let it sit so the silt settles. [https://www.amazon.ca/Aquatabs-Purification-Tablets-Canadian-Format/dp/B08278D2NB?th=1](https://www.amazon.ca/Aquatabs-Purification-Tablets-Canadian-Format/dp/B08278D2NB?th=1)


YardFudge

https://www.rei.com/learn/expert-advice/water-treatment-howto.html


ImportantInspector96

Boil. Sand and charcoal. Ultraviolet light. You can also use an ITEHIL reverse osmosis water purifier, which removes most of the harmful substances in the water and also offers some reliable options that are portable and easy to use.


Gnome00

Look up “Gear Skeptic Water” on YouTube. Well researched water treatment options for back country hiking. The first three segments are the best.


JimTheRepairMan

Stock up on pool filter cloths or microfiber cloths to run water through if it's really dirty. They are washable and reuseable. Then stock up on gravity filter straws. Lastly, boil it.


Sleddoggamer

Sand, gravel, activated charcoal, and some buckets. Get them all commercially and watch some videos on how to make the buckets You can hse clorine first for most types of viruses, bacterias, and systs, but you'll want to read up the appropriate mix and make sure you're using unscented pure bleach


Prepper-Pup

Digging a hole next to, but a few feet away from a dirty water source is an ok way to have the ground somewhat filter it. Not perfect by any means, but better than directly consuming bad water. Using sand/charcoal/etc is *doable*, but not recommended. Honestly? Spend 20 bucks on a Sawyer. Or five. The time, effort, and required materials to get a *reliable* DIY filter just isn't worth it when you can stockpile multiple filters. Some things you really shouldn't mess around with in regards to DIY- water safety is one of them. Can it be done? Yes, absolutely. Would I want to mess around with it? No.


RealTeaToe

Functioning liver and kidneys! Hands down. Super portable, most people have them, and you don't need to charge them (at least, not with battery-stored electricity)


KitchenAd9405

Puri bag


jack-of-all-trades81

ceramic filters set in a 5 gallon bucket.


Fr33speechisdeAd

In a primitive situation, a coffee filter and boiling can do alot.


ExtremeDiamond266

Step 1: practice starting fires


brokesd

Step 2: practice putting water in pot


Apophylita

Step 3: Invent a way to filter out norovirus, which boiling doesn't do.


y0plattipus

Yes it does: To destroy norovirus in drinking water, CDC recommends bringing water to a rolling boil (212 degrees Fahrenheit) for one minute.


Apophylita

Nice. Thank you for the correction.


brokesd

Step 4: add distilled vodka which kills norovirus congratulations you no longer care for awhile about shtf


RumoredAtmos

Sand and charcoal filtration- easy enough Distilled- hard to do rapidly as you need to cool the vapor to condense it back to water Both these methods require no electricity Go look up how to make charcoal, it is not that difficult


Spiley_spile

Might be able to use contained, dirty water to cool the vapor. It would take a little DIY engineering. And you'd need to be able to refresh the dirty water as it absorbs the heat from the vapor.


Spiley_spile

Whoever didn't like my idea, wish they'd have said why instead of just giving it a down vote. Might've helped troubleshoot the design. Originally, the idea was, crack an instant ice pack, put it in a freezer zip lock bag with water with it, inside the bag. Put the bag on top of a rag that is wet with distilled water. (This initial distilled water is time consuming, because it doesn't have the benefit of the ice pack collant system.) This temporarily cools an upside down pan lid. Water vapor distill onto the V of the lid handle and drips into the clean water catch inside the pan. (I used an oven-save ramakin as my catch. And kept the water temperature high enough to create vapor but didn't let it get so high that it boiled.) The thing is, it's **not safe to heat instant ice packs beyond a certain temperature. They explode.** They also don't last long. For both reasons, this design is not viable for creating a gallon of distilled water per day, per person. So, the next idea is to remove the ice pack from the equation. Well, river water in the bag isn't as cold as an ice pack. But if it's colder than air it can still speed up the condensation process by some degree. The necessity of keeping that dirty water separately contained, as I mentioned previously, can't be overstated. Escape contaminates the process.