The water aeration capsules provide a quick and highly portable system for aerating polluted water. The capsules contain bubbles of air, oxygen, and/or other gas(es) surrounded by a water soluble membrane. The capsules are ballasted to sink. Magnetically attractive ballast elements may be provided, and a magnetic sheet may be placed on the bottom of a smaller body of water to enhance the settling of the capsules. The gas burial disposal capsules may be formed of non-degradable material for substantially permanent gas storage, or of degradable material to allow the gases to slowly permeate the surrounding earth for slow and relatively harmless release. The gas may be pressurized within the capsules to approximately the pressure of the surrounding earth.