Don’t assume that water at a campground is safe to drink, even if it comes from a spigot. The water in lakes, rivers, and springs may look crystal clear but often contains various bacteria that can cause illness. Unless it is posted or an official from the campground has told you that the water is safe to drink, you must use one of three purification methods: water filter, chemical tablets, or boiling. • Water Filters: With a filter, you simply pump water from the source into a container. The filter mechanically removes protozoa and bacteria, and you are good to go. If the filter also has an iodine system built-in, it will kill viruses too. • Chemical tablets: Water purification tablets, such as Potable Aqua, are a second option. They employ chemicals, usually iodine, to kill harmful bacteria. Tablets are easy, inexpensive, and quick, but can affect the taste of the water. Tablets also have a limited shelf life — six months once the bottle is opened. Another concern is that chemicals are ineffective against some protozoa, such as cryptosporidium, and require much longer to work if the water is full of sediment or is very cold. • Boiling: Bringing water to a rolling boil is a third option. Boiling has no effect on taste. But it has drawbacks as well. Boiling water is time-consuming, must be done in small batches, requires pouring hot water into containers and then waiting for it to cool, and uses up fuel. CAMPING PORTABLE WATER FILTER
These days, there’s really no excuse for going without a water filter: Handheld filters are getting more compact, lighter, and easier to use, and you can find filters ranging in price from $25 up to $300. Unless your needs are very basic indeed, filters in the $50-and-up range offer more versatility and far more durability and function than their cheaper counterparts. A filter’s purpose is to strain out microscopic contaminants, rendering water clear and somewhat pure, depending on the size of the filter’s pores — what manufacturers call pore-size efficiency. A filter with a rating of one micron or smaller will remove protozoa like giardia and cryptosporidium, as well as parasitic eggs and larvae, but it takes a pore-size efficiency of less than 0.4 microns to remove bacteria. (A micron is one thousandth of a millimeter — you can’t see it with the naked eye.) A good back country water filter weighs less than 20 ounces and is easy to grasp, simple to use, and a snap to clean and maintain. At the very least, buy one that removes protozoa and bacteria. (A number of cheap, pocket-sized filters remove only giardia and cryptosporidium, so buying one of these is risking your health to save money.) Consider the filter’s flow rate, too: A liter per minute won’t leave you dying for a drink. The other filters require chemical assistance, either by incorporating iodine into the filter or using iodine tablets like Potable Aqua. Iodine tastes awful and can be a health risk to some people, so many filters employing it also have a carbon element that removes the iodine when its job is done. Carbon also gets rid of pesticides, herbicides, heavy metals, and chlorine, but there are a couple of carbon-use caveats. My friend and I usually go to camping, hikking and trekking, sometime we need the most is water, Sure we need only clean water. But when you are in the forest you can’t find what you need. Finally We found a good portable water filter, we called it Lifestraw, You can read more about it here, This portable water filter was help us a lot. We can drink the water directly from the river with this water filter. I think this is the most useful that everybody, who love trekking, hikking or camping should own.