An inexpensive back-up water filtration system

[Melvin-Purvis]

Quick and dirty. SmartWater caps on some semi-rigid bottles, three feet of 5/16ths ID food grade tubing, Aquamira drops, a Sawyer mini with adapter kit, a LifeStraw, some Katadyn purification tabs, coffee prefilters, a 1.3 gallon folding water storage bag, and some 5/16ths ID screw protectors. About $60 between Amazon and the local HW store.

 

[Melvin-Purvis]

And here's a clever solar distillation method I'm going to incorporate into the system shown above. I have the original bottle caps, and some glue. With a piece of PVC tubing, I should be set. Minimal additional weight, and I was already going to use one of the bottles as a dirty water bottle.

 

[reppans]

And here's a clever solar distillation method...

I'm not quite seeing where there's enough temperature differential to drive the distillation in that video - seems to me the top and bottom evaporation should be relatively equalized. Unless the dirt water is darker colored enough to absorb more solar radiation?

 

[Melvin-Purvis]

Yep, turns out it doesn't work at all. Wish I'd read the comments to the guy's video where he's called out and admits he faked it. I built a similar system; it was fun, and looks cool, but doesn't work.