While boiling it for 15+ minutes will probably get rid of most of the germs, the water treatment plant might not filter the water and it could be murky or sandy. You can make a water filter though out of half a soda bottle, some aquarium rocks/gravel and activated charcoal at home though that will do a pretty good job. This is the basic idea, though I'd use a lot more activated charcoal if I were to build it. I've made a few of these before and they in fact do work.
While boiling it for 15+ minutes will probably get rid of most of the germs, the water treatment plant might not filter the water and it could be murky or sandy. You can make a water filter though out of half a soda bottle, some aquarium rocks/gravel and activated charcoal at home though that will do a pretty good job. This is the basic idea, though I'd use a lot more activated charcoal if I were to build it. I've made a few of these before and they in fact do work.