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{|width="100%"|style="width:50%;"|{santable{santable_new|
sys1=[[Blackwater Treatment System with Sewerage|6]]|
sys2=|
|spanish_link=Alcantarillados_Libres_de_Solidos
}}
|[[Image:Solids_free_sewer.png |right|300px]]|}
[[Image:Icon_solids_free_sewer.png |right|95px]]
'''A Solids-Free Sewer is a network of small diameter pipes that transports solids-free or pre-treated wastewater (such as [[Septic Tank]] or settling tank effluent) to a treatment facility for further treatment or to a discharge point. Solids-Free Sewers are also referred to as settled, small-bore, small-diameter, variable-grade gravity, or septic tank effluent gravity sewers.'''