Darco Inc. - Specializing in polyethylene and fiberglass underground water storage tanks for potable water, fire protection, and sewage treatment.
DSM Industries Trichy - Home of the India Mark II and Mark III Deep Well Hand Pumps, and the Emergency/ICU Beds.
Eco sac water bladders - Australian company specialising in equipment for household rainwater harvesting and storage, including water bladders for storage. Includes information about how these systems work.
How Water Towers Works - Text and color illustrations to explain the operation of water storage towers.