Sediment Buildup

• Waterlogging can be caused by sediment buildup along the surface of the bladder causing the bladder to become too hard and inflexible. Iron and manganese buildup tends do to this. Sediment buildup also prevents the bladder from taking in water and emptying correctly, weakening water pressure throughout the system.
  
  

Chlorine Problems

• Both the bladder and the tank may be damaged by chlorine. Too much chlorine in the water will cause the bladder to become brittle and less flexible over time, which will either cause the bladder to leak or to be less efficient. Chlorinators also cause a problem by releasing corrosive vapors that cause the tank to rust through, eliminating the tank's ability to be a pressurized system.
  
  

Tank Problems

• It is possible that the reason your holding tank has become waterlogged is because the tank has lost its structural integrity. Tanks located on the ground rust through and even a small leak in the tank weakens the air pressure's ability to drive water through the plumbing.
  
  

Fixing the Problem

• Once you have diagnosed the problem and have some idea of its cause, there is not much you can do to fix a waterlogged tank besides replacing either the bladder or the tank. If you don't, you risk damaging the pump as well.