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The Katadyn Base Camp water filter conveniently filters up to 2.6 gallons of water in less than 20 minutes. If you're family camping, on an extended trip, or have set up a base camp, this hanging water filter is a must-have. Just fill it and hang it, gravity does the rest. The Base Camp removes bacteria, Giardia, and Cryptosporidium to EPA standards. The cleanable, replaceable Hiker Pro microfilter cartridge survives up to 200 gallons, depending on the initial water quality. An outlet hose and on/off valve conveniently fill containers without wasting your precious water.

  • 2.6 gallon waterbag allows your entire group to stay hydrated
  • gravity filter lets you move around camp instead of pumping while your water is being filtered
  • 200 gallon capacity cartridge that can removed and replaced
  • Reviews
  • Q & A

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Works well, but....

  • Familiarity: I've used it several times

Works great for a large group, just hang it up and let it dribble into a large container that people can use to fill their canteens. But after three days the filter gets plugged and the dribble slows to a drip.

Solution: to prevent use the cleanest, clearest water you can find. When filter gets plugged turn the bag inside out and remove the wrap around pre-filter and clean it, then slosh the still attached filter around in the lake or stream, and reattach pre-filter, turn bag right side out, fill and hang up. Should have some improvement in flow. Of course the most effective way to do this is at home in the kitchen sink with high pressure vegetable sprayer.

O for 2

  • Familiarity: I've used it several times

The first unit I used got one bladder of tap water through the filter and then the second time (this time in BWCA) did not work at all...drip drip drip. I returned it filter and all for one more try. The second time the bag failed. There is a plastic washer that is sewn into the bottom of the bag around the filter. It split for no particular reason and leaked severely through the crack. It appeared that the water that did get through the filter was moving just fine, but more water leaked than collected. The concept of this thing is great, and it appears for some it works just fine, but I'm 0 for 2 and won't try it again.

i know the original post is 5 years old, but this is my recent experience as well. 2 bags of tap water to flush the filter and clear the "factory flavor", 1 bag pulled from crystal clear sierra mountain lake... flowed fine, second bag... flow down to 1 liter/5min. No particles or obstructions upon inspection of the outer screen. very disappointed in this product.

Multiple Hiker Must Have

    When your backing with multiple people this thing is money! You don't have to leave camp to continuously fill up a bottle/bladder. The filter has a few steps to change it, but it's very easy process. Downsides: heavy when full (duh) and can be hard to find a spot to hang (just bring rope).

    trouble with filter

      I just got back from a 5 day trip to the Adirondacks. The filter worked with the first bag , slowed down for the second and was just dripping from then on.IT BECAME UNUSABLE. Has anyone used this filter in water that was stained from tree roots? We tried cleaning but we could not continue using it and since we had 9 people we had to start pumping water. Good thing we had 3 back up pumps.

      Great & Easy... but be careful with it

        Nothing beats pumping water by hand quite like just filling a bag and hanging it! I've had the base camper since it came out as a new product. Over the years I have come up with some things to be cautious of when using this product:

        1) When hanging it in a tree, be careful not to run it along the bark. The skin is durable, but only to a point. Also, be mindful of wind tossing the tree, which could result in the bag rubbing with you are makin' water.

        2) I ran into a situation the last time I used it. Air was getting in between the discharge point of the filter (a little nipple the hose fits on) and the end of the hose. When this happened the filter would no long keep its siphon going, it would just slowly drip. After hours of trying to find out how the air was being let in, I found the when I bent the nipple on the end of the filter (where the hose connects) to one side it would work perfect. I concluded that the nipple has gotten bent and cracked near the top of the hose (bottom of filter). ALWAYS BRING A BACKUP SOURCE FOR WATER!

        I figure this issue was caused by one of my group members (or myself) setting the bag on the hose/nipple area while the bag was full. The nipple is enclosed/protected by plastic fins, but when the hose is connected it can bend it to one side causing it to break.

        3) When on open water (such as in a canoe), do NOT let a young novice try to fill the bag by leaning over the edge of the vessel! The bag gets quite heavy when full and could make for an unwanted swim (or worse).

        Works for me

          I have used this filter several times over the past three years. I have had no problems with it and it sure beats pumping, especially after hiking 10-12 miles. It fills the bottles almost as fast as the pump filters do and you can be doing other things (eating, relaxing) while your bottles are being filled.

          Works for me

          250 gallons? Not yet.

            I have used this filter on 4 or 5 trips into the BWCA. I always paddle into the middle of the lake to get clear water. I will agree It is very easy to use, but I have never gotten more than 40 or 50 gallons of water from a filter. I always take a 2nd filter, because one gets plugged during the trip.
            This time I added a coffie filter over the filter, but this did not help.
            Any one else get more than 50 gallons?
            I would like to know how, these filters are not cheap.
            Great idea simple design, just wish you could clean the filter in the field.

            Have you looked at the Sawyer Water Filtration System? It's a gravity system also. It's more expensive to purchase, but you don't need to buy additional filters - probably ever. You can get it with a water faucet adapter to backflush the system and clear any clogs. You do have to take care that the filter doesn't freeze. Otherwise, easy as pie.

            Good equipment!

              I've read several complaints about flow. After a few trips, with a little experimentation beforehand, the solution in the field is not necessarily to empty bag and clean filter. I notice the biggest culprit to be air bubbles. The solution here is to suck on the hose as if you were siphoning gas. The flow increases and you stick the hose back into container. You can also be a little more careful when you scoop the water and try to avoid debris. Six of us have used this product and are verry pleased with not pumping. Fill it when you hit camp, hang it, forget it. Go set up camp and by the time you're done you have plenty of clean water. During that time, check the flow and fix it (see above). No one has been sick yet and I put everything into bleach water after trip. Rinse it, dry it and you're good to go. I easily recommend this to friends. I also carry a strap to use for a hanger if a good tree hook is not available. Wrap the starp around a tree and hang the bag,

              Best Water Filter on the market

                I've used several different water filters over the years, Still have a nice Katadyn Pocket pump that has been serviced and ready for action. After having used the Base Camp on an ten day trip at Philmont back in 2005, I'll never use another one again. This couldn't be simpler. Scoop up the water, hang it from a limb and hook the tube into an Ortleib 2L water bag for the simplest and easiest filtration ever devised by man. We took two base camps, two Ortlieb water bags and the filters lasted twelve guys for ten days, being used several times per day. The filters never needed replacing.

                For the ultimate protection, we also used MSR Sweetwater drops in each water bag before filling up from the Base Camp. Never had anyone get sick or the runs, just pure, clean water. I'll never forget the comment from a friend of mine who went on the same trip a week prior about how much of a pain it was to always be pumping water and how much time it took away from enjoying the trip. Use your brains people and let gravity do the work on your next trip.

                Good idea, poor filter

                  I bought this thinking how nice it would be to save time and trouble filtering water when backpacking. I used it and almost immediately the filter flow slowed to mere drops. At that rate, it would take about a day to fill up a 1 gallon water container. We're going to switch back to our regular water pump/filter. The water was clean, alpine, high elevation lakes in the California Sierras so we were starting with gin clear water. They need to re design their idea.

                  Amazing water filter

                    I have used this for a few trips into the boundary waters now and it is the way to go for water purification. We used to pump our water through filters and that would take forever (with sore arms afterwards). Got to say this thing is a champ and filters enough water for our entire group of 6 people while we set up camp. We have filtered our at least 60 gallons so far without an issue.

                    Outstanding Tool for the Job

                      I have always hated having to pump water first thing after getting to camp. Well, with this gizmo, you can "pump" water and set up camp (or relax) at the same time. I recently did a 5-day trip, and the performance of the Base Camp was just outstanding. Hang it up (adjust it to the right height so the hose doesn't drag the ground - easy with a short rope and carabiner), fill it, and let gravity fill your Camelbaks, Platys and Nalgenes. We were blessed with relatively clean water, so no problems with clogging - this could be an issue on longer trips with sediment-loaded sources (there's no "backflush" procedure), so carry a backup filter cartridge if you expect these conditions (or wrap a coffee filter around the installed cartridge and secure it with a rubber band).

                      I highly recommend the Base Camp filter.

                      This filter rocks!

                        You know the drill. Sit or squat by a stream or lake, and pump, pump, pump until your Nalgene is full, your arm is too tired, or the filter clogs. Chug water, then repeat. Man, I really hate that. With this filter, that is not necessary! I fill it up, then my biggest problem has been remembering to turn it off when my bottle is full (not uncommonly, I look to see clear water spilling out of my full bottle). This is a great filter for a base camp. My fellow backpackers are always happy to see that I have this filter along; it saves a tremendous amount of time and effort. I really don't know why everyone isn't using a filter like this.

                        I have a katadyn base camp water filter...

                        I have a katadyn base camp water filter system and I am going to Isle Royale National Park where the ranger states they have trouble with tape worm cysts in there water there. I believe that these cysts are 0.1 to 0.15 microns and that this filter does not filter that small of organisms. Do you have the specifics on this?????

                        I can speak for the size of the tape worm cysts, that might be best answered by somebody with a micro-biology degree, or by the rangers in Isle Royale. You are correct though, this filter does filter only down to 0.3 microns.

                        Now to put you at ease, I did spend a lot of my time growing up camping and hunting up in the Houghton/Copper Harbor area and never had much any issue with parasites, and I never filtered a thing back then, but if you do want a beefier filtration system check out the Sawyer water treatment system listed below:


                        Best Answer

                        Hey Glenn,

                        Yeah, the only filter system that goes down to the 1 micron diameter is the Sawyer. Chlorine dioxide (Aqua Mira and Micro Pure) and UV treatment (SteriPen) supposedly won't do it, or at least have never been tested on that particular species of cysts by the manufacturers. Even though, after reading up on the specific tape worm cysts in IR, it looks like people are finding it effective to filter down to several microns, followed by either treatment with Chlorine dioxide or iodine. Without spending money on another filter system, your best bet is good old fashioned boiling, or, based on the recommendations of the rangers at Isle Royale, only drink from spigots or taps at certain locations. What is sort of strange is that, in spite of the size of the cysts, their NPS website only recommends filters with the capacity to go down to 25 microns, so before you buy a new system, you might want to get to the bottom of it. Maybe ask them what they're using to treat the water from those sources. It's got to be either chemical or pumped up from down deep in the aquafir. Although with the Sawyer, they offer their "1 million gallon guarantee". Along with the amazingly small pore size, capacity like that is absolutely unheard of in the industry. Hope this helps.

                        Here's a link to a Backpacking light forum with some recommendations and thoughts:


                        Hi, what type of cartridge does the KATADYN...

                        Hi, what type of cartridge does the KATADYN BASE CAMP WATER FILTER use as replacement?


                        is there anyway to backflush this filter....

                        is there anyway to backflush this filter. I don't get 200 gallons from it.

                        Best Answer

                        Hey Christian,

                        No back flush, it's not a directional flow type of filter, but remove and clean your pleated filter cartridge and see how that works. 200 gallons is a measure when filtering water that's basically pretty free from suspended particles to begin with. Anything else is going to require more frequent maintenance and is going to shorten the filter's life expectancy. Hope this works for you.

                        i live in northern australia and was curious...

                        i live in northern australia and was curious about the bacteria in tropics ands would this product be suitable.

                        Best Answer


                        This product will filter bacteria out of water, yes. If you're looking for something to filter large amounts of water in a base-camp-type setting, this would be an excellent choice.

                        i took this filter on a 5 day canoe trip...

                        i took this filter on a 5 day canoe trip in algonquin park ont. worked great for the first two uses then slowed to a drip. used what looked to be clear lake water, is thier a way to clean the filter in the field?

                        i took this filter on a 5 day canoe trip...
                        Best Answer

                        It's interesting that you had this experience, because with fairly clear water you should be able to filter much more water without having to clean the filter. However, I have had a similar experience. When I first got this filter, I was able to filter probably 30-40 gallons of murky water with little problem. However, I eventually replaced the filter, and on my last trip I had to clean it after only about 20 gallons of relatively clean water.

                        Yes, it can be cleaned in the field (without fully dissembling it). Drain the water, turn it inside out, and then take the mesh off of the filter and clean it (there is a tubular netting that slips off of the filter and allows you to unwind the mesh). Then, I put the filter in the water and (underwater) scrub it with a sponge or clothe. This can improve the flow for a while.

                        One other trick I have found is that if the filter begins to slow down, with the bag still full of water I will pinch the bag and 'rub' the filter through the bag. This usually speeds up flow for a little while.

                        When this filter works, it works great. However, I am always sure to have another filter (or water purification method) just in case.

                        Write your question here...what is the...

                        Write your question here...what is the replacement filter that you use for this?

                        I just recieved2 of these filters new in...

                        I just recieved2 of these filters new in the box put a gallon water in them and am getting nothing but a dribble. It has been hanging for an hour and is still has more than the water in it. What am I doing wrong???

                        Best Answer

                        1. Is the 4' hose fully extended and the Base Camp bag raised well (best is 4') above the recepticle container?

                        2. There is a plastic clamp on the hose. Make sure this is in the relaxed position.

                        3. Just finished dinner and wine and I'm out of ideas. I have never heard of one of these that did not work----but "excrement occurs!"

                        4. Contact

                        I'm taking a Katadyn Base Camp into the...

                        I'm taking a Katadyn Base Camp into the BWCA for a week long trip. I was about to purchase a Dromedary or other similar product, when it occurred to me that I might just use the Base Camp as my water storage device. Does anybody see any reason why I wouldn't just fill the Base Camp with lake water, hang it from a tree, and leave the water in it until I want to fill a water bottle, cooking pot, etc.?

                        We are doing a 16 day 16 person Grand...

                        We are doing a 16 day 16 person Grand Canyon river rafting trip in May 2009. Anyone have any experiance with the Katadyn Base Camp Water Filter. Is the river silt a problem?

                        Best Answer

                        I've used this filter with murky river water, but not water with a lot of silt. I would imagine that--with lots of silt--you'll just need to clean the filter more often (just like you would with other filters). There is a thin mesh filter before water gets to the actual filter, and this catches most of the larger debris. On a long trip like that (with that many people) I'd make sure that you have numerous filtration systems. For example, if I were going on a 4 person, 2 week trip, at a bare minimum I'd have the Katadyn Base Camp, an extra filter for it, and at least 1-2 hand-pump filters. On a raft, weight and size are less important than on a backpacking trip, so I would rather be over-prepared when it comes to ensuring that there's no chance that I would need to skimp on fresh water. Other than an injury, there's no other thing that can sabotage a trip like running out of fresh water can.

                        If I was using a water source where there was a large amount of silt I would purchase a collapsible sink fill it with water first and let it sit for a while to let the silt settle to the bottom before pouring it into the filter bag, this will cut down on constantly cleaning the filter. This method takes a bit longer for setup but evens out over time.

                        Has anybody used this in freezing conditions?...

                        Has anybody used this in freezing conditions? Does it work for that? I could just imagine water freezing in the tube or filter and having a problem. Anybody know? have any experience with that?

                        Best Answer

                        Well if it's outside in sub-freezing conditions, the water will obviously freeze. This isn't pressurized or forced at all, so it probably won't keep it from freezing. That said, it won't suffer any damage from freezing, it just won't run, so if it's out overnight and happens to freeze and thaw in the morning, you're fine.

                        I took one of the Base Camp filters to...

                        I took one of the Base Camp filters to India to filter tap water. Should i be concerned about what might be growing in the filter now? thanks.

                        Best Answer

                        Your concerns are justified but the main compartment is designed to contain suspect water. If you're still concerned, run a 32 to 1, water to bleach solution through it followed by a liter or two of clean water. From Ray. I just returned from doing a 16 day trek in Nepal. Our outfitter used 2 Base Camps. They love them, but also supplement them with Katadyn Micropur tablets if they suspect their water is below human feces and thus possibly contaminated with dangerous viruses. First they filter,then add one Micropur tablet per liter of water. Since the filter has taken out hard to kill protozoa (plus all bacteria), the remaining viruses are killed in 15 minutes. No chlorine or iodine taste either. I'll admit that chlorine bleach would also work, but I don't like carrying bleach, measuring bleach, pouring bleach, or tasting bleach. thanks, Ray

                        In India, water is often treated with lime... This precipitates out with boiling but not with filtering alone. For maximum safety in India and surrounding areas, depending on your location, filter your water first, followed by boiling and cooling to near room temp, followed by a filtration through a bandana to remove the precipitate. When an Indian tells me that the water isn't safe without the extra steps, I listen. Consequently, even though it was a pain, I followed through every single morning and night. No illnesses or stomach upsets ensued. I traveled throughout North and South India continuously for 5 months without illness or mishap.