Tanks and Cisterns are important components in rainwater harvesting systems. Variation in the end use changes if a tank or system will be an open or closed design, what materials it will be composed of, as well as where it will be located. Below is a list of different tanks and cisterns based on different end uses, material availability, and costs.

• 
  Rainwater catchment at Pedregal
  Ferrocement Tank covered in clay lime plaster for aesthetics
• 
  Isla Urbana's Roof Storage Tank for Water Pressure
  Gravity provides water pressure for end uses
• 
  Petegral's Open Rain Catchment
  Open tank catches filtered storm water and is used for irrigation.