Whether the water in the wild is to be treated after drinking, everyone has different ideas for each person. Some people think that there is no trace of pollution in the wild and that there will be no pollution. The use of water purification tablets is based on chemical purification, most of which use chlorine and iodine. The mainstream in the market is the use of iodine. For example, in the picture above, the white bottle is an iodine tablet. The preservation of iodine tablets needs attention to avoid light and avoid moisture. The advantages of using water purification tablets are cheap, convenient and lightweight. More time-consuming, generally add water purification pills about 20 minutes after drinking. The disadvantage is that there is a strange smell. This can be solved by post-processing. For example, the yellow pill above is used to deodorize. Or add something to Jane. The second is that there is a major virus that cannot be removed, cryptosporidium, which is probably the most common parasite in water. The third is prone to allergies, and it reacts chemically with certain foods or utensils. Filtration purification The general filter purifier is based on the filtration, and then chemically remove the virus, such as iodine, so it also has the shortcomings of the previous water purification tablets of water purification. The name posted above is the only water purifier that does not chemically remove the virus. 4 Person Sound Proof Meeting Pod 4 Person Sound Proof Meeting Pod,Acoustic Office phone booth, soundproof pod,Private Meeting Pod Feat Top International(China) CO.,LTD , https://www.lounge-seating.com
In fact, as long as it is amateurs like us who can get there, what else can there really be no pollution? In fact, even if there is no pollution, it does not mean that there is no virus, bacteria, or various harmful substances in the water. It is still best if we can deal with the situation when conditions permit.
Now the way of water treatment is mainly boiling, water purification drugs and filters
boil
This is the most practical and most effective means. The downside is that it wastes fuel (except, of course, with the zip oven I mentioned before) and it takes time.
Clean water pill 
In general, water purification tablets have a large market because of their light weight, low cost and small size. It is important to note that the use of at least 20 minutes, the second is not to use more than one week.
Purification filter
There are actually two categories, filters and filter purifiers. The main difference is that the filter removes bacteria and parasites in a filtered manner. In addition to removing bacteria and parasites, filter purifiers also remove viruses. (based on REI classification)
filter 
The advantage of using a purifying filter is that you can drink water immediately, almost without waiting, and it is almost the safest method of purifying your water (using a filter purifier). The downside is that the price is expensive, there are few less than 60 US dollars, the latter part of the cost is high, the filter also need to spend money. Large, heavy, almost 1 lbs. It also needs frequent maintenance when used, and it is easy to block.
The three methods have their own strengths. How to choose is the point of view of everyone.
Piloteer manuscript for China's outdoor data network, originated in the frog photography forum
Outdoor water treatment [Photos]