My new low tech water system

Discussion in 'Hydration & Hygiene' started by paul, Apr 25, 2017.

  1. paul

    paul Thru Hiker

    I've decided that the sawyer mini whilst an epic bit of kit is still too heavy. I'm moving over to katadyn liquid to disinfect water.

    I needed something simple with epic flow to act as a pre filter. Not wanting to use a buff so it had to be bottle based.

    Took a standard pop bottle, drilled the lid, whacked in a grommet and then pushed some source bladder tube in to which I plunged in an inline petrol filter.

    Works great. No breather valve needed as air can move freely back into the bottle. Should remove any crud prior to treatment. 30g for the prototype but will get lighter once I trim the tube and go through the mandatory which bottle top is the lightest journey.

    IMG_20170425_184927_582.jpg
    Meadows, Teepee, murpharoo and 5 others like this.
  2. theoctagon

    theoctagon Thru Hiker

    What's the katadyn liquid? I'm not familiar with that one

    Apologies... very lazy of me... googling now...
  3. paul

    paul Thru Hiker

    Micropur forte. UOG have the tablets but as i want to do 500ml bottles ill need the liquid. Alpinetrek has it

    [​IMG]
    JKM and theoctagon like this.
  4. JKM

    JKM Section Hiker

    @paul how does it taste?
  5. paul

    paul Thru Hiker

    not arrived yet mate but im sure it will be fine. Ill only use it for cold drinks during the day which means adding bolero powder so ill not taste the chemicals
    JKM likes this.
  6. MartinK9

    MartinK9 Ultralighter



    But,but it expired 11 years ago......:D
    JKM likes this.
  7. paul

    paul Thru Hiker

    cant belive its been around that long and id never heard of it til yesterday lol. Wonder why UK sellers seem to avoid liquid versions of this. Also odd that aquamira drops are not available over here either
    JKM likes this.
  8. edh

    edh Thru Hiker

    You used to be able to buy Acquamira here, I have.
  9. Mole

    Mole Thru Hiker

    If I wanted to purify for daytime UK hill use I think I'd just use a Sawyer filter. Says that stuff takes 2 hours the drops to work on crypto or giardia cysts which are the main issues as far as anything i can find out about?
    (A-M takes 45mins on cysts)

    A-M equivalent:
    https://www.lifesystems.co.uk/products/water-purification/chlorine-dioxide-drops

    Faster to brew up.;)

    Gunk filter looks good though. Some sources I use are a bit peaty/ mossy. Might be a useful addition to the kit. Though I guess I've coped so far...
    Last edited: Apr 25, 2017
    paul and Tom Finding like this.
  10. tom

    tom Ultralighter

    Great idea with the petrol filter. I used to fiddle with mini coffee filters - a right pain. The taste is not too bad actually - just a little metallic. My main problem with Katadyn was the hour wait which didn`t suit my habits. I carry only little water normally and then drink loads when I get to a source.
  11. Enzo

    Enzo Section Hiker

    Ive read of thru hikers using unscented bleach. Ill stick to my squeeze:)
    Meadows likes this.
  12. paul

    paul Thru Hiker

    I cant claim the idea. nicked it off @Teepee :D
    Teepee, tom and Mole like this.
  13. paul

    paul Thru Hiker

    cheers Mole. Some useful info there. With the life systems is the second bottle just a taste neutraliser? id like to carry just one bottle if possible. 2hrs wait shouldnt cause me any issues though as i always have two bottles on the go but 45 mins for crypto and giardia would clearly be better from an admin perspective
  14. Mole

    Mole Thru Hiker

    Oh. I dunno Paul.

    Just read the product factsheets.
    I just watched the lifesysystems video. 10 minutes wait before you can add it to the water.

    I can see why filters are so popular.

    If l treat water at all (very very rarely), it's been tabs or a filter bottle I was gifted and which was lost a while ago. Need to get something for the September trip. Probably Sawyer mini or squeeze I guess.
  15. paul

    paul Thru Hiker

    its a compromise for sure. guess ill just have to try it out and see if my patience is tested too far. As a rule 2 500ml cold drinks will last me a days walking as i tend to brew stop a fair bit anyway. Its probably only worth the weight saving for longer trips but ill give it a whirl
    Mole likes this.
  16. Mole

    Mole Thru Hiker

    I'm similar ( in UK) unless it's a hot summer day. I start out with 500ml 'clean' from home/wherever, and carry an empty platy. Then, just top up the bottle or use the platy when I pass a spring/source deemed 'ok' at an appropriate time. Or just drink direct from the source. Seems most of my mates/colleagues do similar on Dartmoor or other hill country.

    (We do direct our Explorers to use a ClO2 tab regime or boil in camp.)
  17. Rog Tallbloke

    Rog Tallbloke Thru Hiker

    I like to filter through a 1 micron screen to take out cryptospiridium and Giardia when filling from a non-flowing source (which I do as infrequently as possible).

    I have a military pilots survival kit pumped filter weighing 2.5oz for this purpose. As well as the filter it has a block of iodine inline. It takes a lot of pumping and time to process 1L of water.
    Last edited: Apr 26, 2017
  18. Enzo

    Enzo Section Hiker

    Walked 27 miles of st swithuns way sunday and its usually dotted with clear chalk streams, its now so dry i went 19 miles without seeing water
  19. Whiteburn

    Whiteburn Thru Hiker

    The other thing to be aware of with the Katadyn or Aquamira liquids is their lack of effectiveness, or significantly increased treatment time, with low temperature water.
    IIRC @ 10C (not unusual for Scotland in summer) you need to double the time.
    I can see the point in using liquid treatments for large group particularly when you can give an overnight 'soak' but IMO you can't beat a Sawyer Mini for solo use, 10 - 15mins gets me 2 1/2 L of drinking water (gravity setup) while I get pitched up & I don't begrudge the weight.

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