#1 Pervasive
Spreading widely throughout an area or a group of people, often with a subtle but powerful effect.
#2 Omnipresent
Present everywhere at the same time, often used to describe a phenomenon that seems to be in all places at once.
#3 Universal
Affecting, or done by all people or things in the world or in a particular group; applicable to all cases.
#4 Rife
Of common occurrence; widespread, especially of something undesirable or harmful.
#5 Everywhere
In all places; in every part. A simple and direct synonym for being found in any location.