I tend to steer clear of the pump style backpacking filters. Mainly because they require a mechanical action that can potentially break and also tends to take up precious time. For backpacking there great but in a Shelter-in-Place situation I find the Berkey Systems to be some of the best.
|The components of the Go Berkey Kit|
|All components fit inside the included|
stuff sack; as pictured here
The Go Berkey has a 1 quart capacity. It has a height of 14" when put together and a diameter of 4". Built from stainless steel- this will aid in cleaning of the system as well as reduce micro-pores where bacteria can be harbored. It can also be used to boil water if need be. The total weight is 2.4 lbs; so its not for you ultra-light backpackers.
Also included in all Berkey systems is the Sports Berkey bottle. This also includes an in-line filter for even more versatility on the go. The Sports Berkey retails alone for $28. This is standard for in-line filter bottles such as this. It will filter 160 refills from any water source. Great if your on the move and don't have time to set up the Go Berkey or the time necessary to filtrate.
I really encourage you guys to check out these systems if you don't already have a water filtration system for your disaster kit. This particular model goes for $150 and will last an extremely long time.
Check them out at HERE