Make electrical equipment have a chance to short out depending on the amount of water

[APARTHEID]

Fluids interacting with air temperatures. Fluids turn into slick ice in cold, or create steam in a warmer one
Fluids having a flow speed in relation to it's spread weight. When a great deal of water is moving through an area quickly, the flow speed pushes back items, knocking people down, and pushing people into surfaces

You might want to check out the Toxins Lab sometime. There's a lot of odd reactions relating to these two things in the combustion chambers...