|style="background:#efefef;"|[[Image:active carbon icon.png|center|80px|link=Active carbon]]
|style="background:#efefef;"|[[Image:membrane filtration icon.png|center|80px|link=Membrane filtration]]
|style="background:#efefef;"|[[Image:screen icon.png|center|80px|link=Screens and straining]]
|-
|style="background:#efefef;"|[[Image:Filter_sand small.jpg|center|120px|link=Granular filtration]]
|style="background:#efefef;"|[[Image:Activated_carbon_bags small.jpg|center|120px|link=Active carbon]]
|style="background:#efefef;"|[[Image:Reverse_osmosis small.jpg|center|120px|link=Membrane filtration]]
|style="background:#efefef;"|[[Image:screens small.jpg|center|120px|link=Screens and straining]]
|-
|style="background:#efefef;"|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Granular filtration]]</div>
|style="background:#efefef;"|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Active carbon]]</div>
|style="background:#efefef;"|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Membrane filtration]]</div>
|style="background:#efefef;"|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Screens and straining]]</div>
|-
|colspan="5" style="background-color:#efefef;"|
|}
</div>