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.
These projects may be utilizing below ground tanks and are part of the project listing in [http://akvo.org/products/rsr/ Really Simple Reporting (RSR) ] on [http://www.akvo.org Akvo.org].
{| style="border: 2px solid #e0e0e0; width: 7060%; text-align: justify; background-color: #f5f5f5e9f5fd;" cellpadding="2"|- style="vertical-align: top"|[[Image:akvorsr logo_lite.png|center|60px|link=http://akvo.org/products/rsr /]]|- style="vertical-align: bottom"|[[Image:project 644.jpg|thumb|nonecenter|200px140px|<font size="2"><center>[http://rsr.akvo.org/project/644/ RSR Project 644]<br>Rwenzori Integrated School WASH Project</center></font>|link=http://wandelenvoorwater2014rsr.akvoappakvo.org/en/project/644/]]|'''Akvo [[Image:akvorsr.png |thumb|center|140px|<font size="2"><center>[https://akvo.org/improve-and-showcase-your-results RSR Project0]<br>RSR Project</center></font>|link=https://akvo.org/improve-and-showcase-your-results ]] |[[Image:''' project 840.png |thumb|center|140px|<font size="2"><center>[http://wandelenvoorwater2014rsr.akvoappakvo.org/en/project/644840/ Rwenzori Integrated School WASH RSR Project840]HEWASA and JESE will jointly implement this 3-years school WASH program <br>Rainwater harvesting in Kabarole district in the West of UgandaGuinee Bissau 2</center></font>|link=http://rsr. Not only 24 schools will be supplied with WASH facilities (Rainwater Harvesting Tanks, Ecosan Latrines and Handwashing facilities) but 72 surrounding communities will be included for household latrine construction through CLTS, hygiene and health education and promotionakvo.org/project/840/ ]]
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===Below ground tank links===
* VIDEO: [httphttps://blipvimeo.tvcom/mobile-school-for-water-and-sanitation/tanks-underground-cistern-in-sandy-soil-2468875 8453929 Tanks - underground cistern in sandy soil.] EMAS video.