Linked Questions

59
votes
10answers
13k views

What is the safest way to purify water?

There are a number of ways to purify water, off the top of my head we have filters, iodine, and boiling. Clearly each has some advantage/disadvantage (iodine tastes terrible, boiling takes time). ...
32
votes
7answers
12k views

Where in the Alps is it safe to drink the water without filtering?

In some places, the Swedish Lappland for example, it's perfectly fine and even recommended to drink water directly from streams. Is it also recommended whilst hiking in the Alps, and if so is it only ...
27
votes
4answers
3k views

Why are people so worried about Giardia?

Everyone I have ever been camping with seems to have an unwritten rule never to drink from streams no matter how clear they might seem, for fear of Giardia. I have also heard people telling about ...
26
votes
3answers
11k views

Can you boil an egg in dirty water?

I'm going on a one day hike, and I want to cook an egg whilst on it. I'd like to avoid carrying excess water, and the route goes past a couple of waterfalls and several streams, so there is no problem ...
13
votes
3answers
8k views

Is it safe to drink snow?

If it snows, is it safe to drink the water when it melts? What sickness can I get from snow? I am in Europe and would like to know for here, but other places would be interesting too.
17
votes
3answers
6k views

Is drinking water containing dirt harmful?

I noticed that if I collect water from a stream dense of small debris/thin mud, if I keep the water bottle close to the surface, while it takes a longer time to fill the bottle, the water is cleaner ...
17
votes
3answers
30k views

Water filters - why sand and rocks?

Saw a video on youtube where some guy made a water filter out of a bottle, charcoal, sand and little rocks. He commented that since the charcoal is very porous it's great for filtering. Then, after ...
11
votes
3answers
3k views

How do you make an emergency water filter and purifier?

How do you make an effective water filter using the natural elements of the great outdoors? Suppose your only source of water was dirty and questionable at best. How could you make it potable without ...
9
votes
2answers
3k views

Drinking water in Dartmoor

Is it safe to drink water from streams in Dartmoor using simple purification methods? I'm planning a trip and am looking to filter using a Millbank bag and then boil for four minutes to kill off any ...
7
votes
2answers
531 views

Drinking surface water heuristics

I'm curious about some general guidelines, that may represent a probability although not necessarily certainty, especially when combined with other factors, about choosing the best source of emergency ...
6
votes
1answer
708 views

What are the most likely causes of unfilterable water contamination in upland UK areas?

I have a new water filter, which removes bacteria and protozoa. It's tempting to imagine that I can now go around drinking from whatever revolting-looking puddles I come across, but I'm mindful that ...
4
votes
2answers
209 views

Is it ok to bleed a fish in muddy water

Sometimes I go to a secluded lake and want to take some table size Catfish home. However, the lake is particularly muddy and dirty, the water is actually brown. Is there a problem with bleeding fish ...