PWM water injection?

[Jason96SL2]

I just found this board...I think it's awesome. Tons of good info.

Is it possible to run a pwm injector that's alcohol rated for water injection? I have a full standalone fuel system that can run a few extra injectors. I was thinking about buying one of those injectors and making a reservoir/pump to keep it supplied and just have it computer controlled. I can't find any info on how much pressure water/alcohol mixes need to be at to properly atomize the mixture and not end up warping things as drops of water hit my hot metal components. Also, since I'm scared of the effects methanol has on seals etc, is isoproponal from the drug store a good replacement? Thanks. -Jason