|[[Image:Icon_boiling1.png|center|link=http://akvo.org/wiki/index.php/Boiling]]
|[[Image:coag flocc icon.png|center|link=http://akvo.org/wiki/index.php/Natural_coagulation_/_Flocculation]]
|[[Image:presettle icon.png|center|link=http://akvo.org/wiki/index.php/Storage_/_Pre-settlement]]
|[[Image:aeration icon.png|center|link=http://akvo.org/wiki/index.php/Aeration]]
|-
|[[Image:water pyrammid small.jpg|center|150px|link=http://akvo.org/wiki/index.php/Desalination_/_Evaporation]]
|[[Image:village boiling small.jpg|center|150px|link=http://akvo.org/wiki/index.php/Boiling]]
|[[Image:250px-Moringa_seed_pods small.jpg|center|150px|link=http://akvo.org/wiki/index.php/Natural_coagulation_/_Flocculation]]
|[[Image:300px-Storage_and_sedimentation small.jpg|center|150px|link=http://akvo.org/wiki/index.php/Storage_/_Pre-settlement]]
|[[Image:300px-Aeration_cone small.jpg|center|150px|link=http://akvo.org/wiki/index.php/Aeration]]
|-
|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">
|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Boiling]]</div>
|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Natural_coagulation_/_Flocculation|Natural coagulation <br>/ Flocculation]]</div>
|-
|[[Image:presettle icon.png|center|link=http://akvo.org/wiki/index.php/Storage_/_Pre-settlement]]
|[[Image:aeration icon.png|center|link=http://akvo.org/wiki/index.php/Aeration]]
|-
|[[Image:300px-Storage_and_sedimentation small.jpg|center|150px|link=http://akvo.org/wiki/index.php/Storage_/_Pre-settlement]]
|[[Image:300px-Aeration_cone small.jpg|center|150px|link=http://akvo.org/wiki/index.php/Aeration]]
|-
|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Storage / Pre-settlement]]</div>
|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Aeration]]</div>
|}