Akvouser
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| align="center" style="background:#efefef;"| [[Image:human_urine_as_fertiliser_icon.png]] <br> [[Human urine as fertiliser]]
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| align="center" style="background:#efefef;"| [[Image:pour_flush_slabs_icon.png]] <br> [[Pour_flush_slabsPour flush slabs]]
| align="center" | [[Image:vaults_and_chambers_icon.png]] <br> [[Vaults and chambers]]
| align="center" style="background:#efefef;"| [[Image:settled_sewerage_small_icon.png]] <br> [[Settled sewerage (small diameter)]]
