How do I increase the water pressure in my shower in spite of water-saving hardware?
If Jeff's suggestions don't fix the problem, it could simply be that the water-saving showerhead doesn't allow the pressure / flow rate you want. This was the case in all of the apartments I lived in; I went to Home Depot and bought a decent new showerhead for $30, and moved it with me from apartment to apartment. Each time I moved out I simply put the original one back on.

They aren't difficult to replace; all you need is:


A pair of pliers large enough to grasp the collar (tongue-and-groove pliers work best)
A rag to wrap around the collar, to prevent damage from the pliers
A small amount of Teflon pipe thread tape


Take the old one off and clean the threads of any old sealant or Teflon tape. Apply 2-3 wraps of new Teflon tape in a clockwise direction - direction of wrap is important so that when you thread on the shower head, you're going in the same direction as the wrap and not unraveling it as you tighten. Thread on the new showerhead until snug and check for leaks.