How do I save myself. Prevalent in up?

I use underground water drawn via submersible pump that we store in tank on terrace. The problem is I hardly get a chance to clean the tank since there isn't a proper staircase made. Often while flushing or washing a few drizzles or drops of water fall in face and sometimes I can feel the droplets falling in nostrils too. Ever since I read about N Fowleri infection, try as much but each time such incidence happens I fear for my life as I read it is mostly fatal. Can such infection happen merely by some droplets falling in nostril and us breathing them or it usually can occur when a lot of water enters nose forcibly. I consulted many doctors but can someone please clarify this for me.  It is summer so that makes me more scared. Is it prevalent in UP?