Below ground tanks

One of the best advantages of underground water tanks is the space conserved by simply installing the water tank in the ground. This provides extra or larger space which may be utilized for other purposes. The underground water tank eliminates exposure to weather conditions but must lie above the water-table level. However, below ground tanks are more expensive to build. The plastic-lined tank and the ferrocement jar tank can be either above ground or below ground.

Underground tank	Sump tank	Horizontal cistern	EMAS cistern	Plastic-lined tank	Small household ferrocement tanks (jars)

Field experiences

These projects may be utilizing below ground tanks and are part of the project listing in Really Simple Reporting (RSR) on Akvo.org.

RSR Project 644 Rwenzori Integrated School WASH Project	RSR Project 0 RSR Project	RSR Project 840 Rainwater harvesting in Guinee Bissau 2

Below ground tank links

• VIDEO: Tanks - underground cistern in sandy soil. EMAS video.