Water Filters: Pump water filter vs Gravity Filter Bag

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Pump water filter

Pump water pollutants and cleansers are frequently more suited for filtering water from muddy billabongs, ground-choked gutters, and other sketchy sources than squeeze-style water pollutants, bottle pollutants, chemical cleansers, and UV cleansers. Unlike other styles, they use a two-stage process to remove pollutants. While pump pollutants are heavier to carry than other pollutants and water sanctification styles, they’ve other benefits that are worth considering, including


  • You can process precisely the amount of water you need.
  • Water can be pulled from seeps and shallow water sources.
  • The internal element or cartridge is replaceable.


  • Pumping can be a chore, especially at the end of the element’s lifespan.
  • Field cleaning of the element is required.
  • Weight and bulk are greater than other treatment methods.

Pump-style pollutants generally have a prefilter at the end of the sock to remove suspended solids or biologicals before they get anywhere near the sludge element. This is useful when you need to filter water from a muddy sluice or swash that has suspended solids in it or from billabongs that have moss, tadpoles, and other biologicals swimming around in them. All of these will go up a squeeze sludge or other single-stage sludge and make it nearly insolvable to use.

Pump water pollutants and cleansers have hoses that make it easy to collect still water from ponds, billabongs, desert potholes, or aqueducts with veritably steep banks. Without that sock, you’d have to carry another vessel to lade the water into or scramble down a steep swash bank constantly to get enough water to satisfy your requirements

Gravity Filter Bag


  • Gravity does the work for you.
  • You can easily process large quantities of water for a big group.
  • The element or cartridge is replaceable.


  • It can be hard to find a place to hang reservoirs.
  • The treatment process is slower than pumping.
  • Seeps and shallow water sources can make it challenging to fill a reservoir.
  • Field cleaning of the element is required.

gravity filter bag uses the pulling force of graveness to move water from the undressed force, through the sludge, and out the bottom into a storehouse vessel. While the water is being moved down, patches are being stopped and filtered to give clean drinking water. Most importantly, graveness sludge systems do a great job of drawing water and making it safe to drink.


gravity filter bags are veritably effective in creating safe-to-drink water. There’s no pumping involved, as graveness takes over and does the real work. When you combine water, graveness, and high-quality sludge, you get potable water.

Although generally, enough laggardly, graveness water pollutants do a great job of removing pollutants. When the water moves from the first hang bag to another or a different type of vessel, the magic happens in between. That’s where the cleaning and filtering process takes place. So, you’ll have to stay a bit, but graveness does a great job of really getting everything out during that time.

Wakiwaki gravity filter bag can filter out 99.9999 bacteria and 99.9 protozoa, so you’re covered on that end. This is important to consider because not all hang bags can do this.

One of the other big factors is weight and capacity. This is a veritably feather light graveness water sludge that can be compacted down fluently. So, for those hiking and backpacking passages, you don’t have to worry about the sludge being too heavy.

In terms of capacity, this bag holds four liters of water at any one time. Once you filter one bag, you can clear the clean water into another vessel, refill the bag, and start the filtering process. This is big enough to filter water for yourself or larger groups on the trail. So, all you have to do is fill the bag, make sure everything is connected rightly, and hang it in a tree. After that, it’s simply staying for your water to be drinkable.

To newcomers, the price may be a little scary because there are cheaper options out there. still, a good filtering system is truly an investment. When you spend hard-earned plutocrats on commodities like this, you want to get the maximum value possible from your purchase. You get that with this option.


Best for low water supply–Pump

There’s not much difference in weight with a gravity versus pump water filter. Depending on what brand, how much you can spend the weight can vary. The main difference between the gravity versus the pump water filter is how much water is needed to gather. The pump is good for hiking where you might not have ample water sources. If the water source is not deep or wide enough to scoop it up, you may want to consider a pump filter. A pump can utilize a pool the size of your palm as long as it’s deep or running.

Depending on how strong my arm is feeling and how thirsty I am my pump speed varies, but it is usually pretty quick. If you are wanting to cut weight and gather water as you go instead of hauling a ton of water, a pump filter would be the easiest to use.

The last time I went backpacking I knew our campsite was not near a water source. So the creek we crossed just before camp, we went ahead and topped off our water. A pump worked better for me here because I was able just to squat down by the water, only removing my pump and reservoir and filling up quickly.

Convenience–Gravity Filter Bag

So that brings me to my next comparison for a gravity versus pump water filter versus tablets. When you spend all your energy hauling your heavy gear up and over rocky terrain, you don’t want to spend a lot of effort on the little things.

A gravity filter by far takes the least amount of effort because, well gravity does the work. With a gravity water filter, you scoop up the water into a bag and hang it from a tree or rock and let it drip through the tubes, and filter it into your container.

But gravity filters are not ideal for every situation. First, you need a tree or rock to hang the bag. If not, you have to hold it up, and that’s not convenient. You also need a good pool of water or cascade to be able to scoop it into the bag. A slow or small cascade will work, but it will take a little time. I once backpacked and only had small shallow pools in which to gather water. A gravity filter would have been difficult there.

About the Bag Water Filter Questions

Q: How often do I need to backwash?

A: You should notice that the filtration process slows down to the point where it may take double or triple the amount of time to filter your water than usual. The gravity filter bag lifespan can be extended by clean water backwashing.

Q: How do you store filters?

A: If you’re going away for a while, or you just won’t be using your gravity water bag with filter, drain the water out of your system and remove the filters. Allow them to air dry, then leave them in a dry and cool place until you plan to use your system again.

Q: Does this have a carbon filter to address the taste?

A: Yes, this portable gravity water filter has carbon to address that.


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