by Wollemi » Sat 22 Dec, 2012 12:36 pm
I think there are two reasons for treating everything in the area;
- the soils are poorly drained mineral soils; there is little humus for faecal attachment and interaction with which to break down. So body wastes migrate down with the aspect of a hillside, across a slope, into minor creeks.
- the other is many inexperienced 'bushwalkers' crap anywhere. A dry depression that has been defecated into, holds many 10's of litres of rainwater next week.
Excepting water taken from rapids, I do treat the water in The Main Range. I have had ~15hr gastro a few times in KNP, up high, too. Perhaps consider carrying out your faeces, double bagging with shopping bags - although a Field Officer once insisted I take the packages home and flush them down the toilet.
Easier to digest (!) is the fact that you can easily treat water with 4 to 6 drops of betadine per litre. Put the cap on loosely and invert to treat the threads, too.
Hmm... I have had a few trips where I didn't ever wash anything, from hands to cutlery and dishes, staying in 'dirty' Kosciusko huts and went home well. Other ski and bushwalking trips I have regularly used hand disinfectant and carefully washed cutlery and pots, only to have stomach cramps and diarrhea before getting back to the car.
Live everyday as if it were your last... one day you will be right.