Mmiri na-asọba n'ime ụlọ mposi
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Mmiri nsị na-enweghị mmiri (SSO) bụ ọnọdụ ebe a na-ewepụ nsị na'enweghị mmiri site na nsị dị ọcha n'ime gburugburu ebe obibi tupu ị rute n'ụlọ ọgwụ nsị. Mgbe mmiri ozuzo kpatara ya, a makwaara ya dị ka mmiri ozuzo. Ihe na-akpata mbufe nke nsị na-agụnye: Mgbochi nke ahịrị ọwa mmiri, ntinye/nbanye nke oke mmiri ozuzo n'ime ahịrị ọwa mmiri n'oge oke mmiri ozuzo, adịghị arụ ọrụ nke ebe a na-ebuli mmiri ma ọ bụ ike ọkụ eletrik, ahịrị ọwa mmiri gbajiri agbaji. Mgbochi nke mmemme njupụta dị otú ahụ gụnyere nrụzi mgbe niile na nkwalite akụrụngwa n'oge.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f0/Sewer_overflow_RI_EPA.jpg/220px-Sewer_overflow_RI_EPA.jpg)
SSOs nwere ike ịkpata ọrịa gastrointestinal (ọrịa mmiri), mmechi osimiri na mgbochi na azụ na shellfish oriri.