If you don't know how to purity your water then please keep reading. All of the following the information was gained from the United States Environmental Protection Agency. Their link; Https://www.epa.gov
If you are unable to get any bottled water, boiling it is sufficient and heavily recommended to kill pathogenic bacteria, viruses and protozoa.
If the water is cloudy, let it settle using a clean cloth, paperboiling water towel or a coffee filter.
Place your water in pot or pan (made for cooking or general exposer to heat)
Place your water on the stove or heat source (like a fire) until its boiling. Then wait up to 2 to 3 minutes before removing the pan or pot. Let it cool off naturally and store it in a clean container with covers or a lid to avoid it becoming contaminated again.
This is only one method of making your water safe to drink and there is other methods that you unable to boil your water on the site i stated earlier. This is only one of many ways and i heavily recommend once again to go and do your own research to find which method is possible for you.
Stay safe ^^