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: filter, chemical tablets, or boiling.
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.
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. Jet-Boil a self contained cooking unit works well for this.
