![](https://scontent.ffnc1-1.fna.fbcdn.net/v/t39.30808-6/396973681_732545722249767_3162441085701664940_n.jpg?stp=dst-jpg_p526x395&_nc_cat=102&ccb=1-7&_nc_sid=5f2048&_nc_eui2=AeHYve_u8BTzUINlYGSPjwOhy48sVPl_qQbLjyxU-X-pBtMpjNQyLNfepZ8FwMOE1-hrL2CUXOawzUynuAYxBWd-&_nc_ohc=7RyzQ6uSH8kAX8-5TPL&_nc_ht=scontent.ffnc1-1.fna&oh=00_AfBOWQkQttGTMdlcIc2VAg4UzWvcsbhtQObhv1Ee_gvgrg&oe=6553CC75)
![](https://scontent.ffnc1-1.fna.fbcdn.net/v/t39.30808-6/398131485_732545748916431_3107029218720351110_n.jpg?stp=dst-jpg_p526x395&_nc_cat=111&ccb=1-7&_nc_sid=5f2048&_nc_eui2=AeFNYX2Z4rgBR8LjNeOFEuqwfDMxSBJRxS18MzFIElHFLWqp9x99uGrh9UFYnmMoWxja8E2-L0jwTV2L5echZxP7&_nc_ohc=Bkg5Z04nyxIAX8FY74V&_nc_ht=scontent.ffnc1-1.fna&oh=00_AfCINI-NxpK7pAPc-m_VgVmDwzEy1xAH5E-77QVNEztwLw&oe=655311FE)
![](https://scontent.ffnc1-1.fna.fbcdn.net/v/t39.30808-6/396981863_732545778916428_347694801493365700_n.jpg?stp=dst-jpg_p526x395&_nc_cat=102&ccb=1-7&_nc_sid=5f2048&_nc_eui2=AeF2jtO3440hYsHawOptAXmnyIz2HeRJMHTIjPYd5EkwdHkf0EOdVQnkWTgIuuDiXOf0M4xOnjSizTIVsxf8uKCK&_nc_ohc=uhknEAQZdLEAX-flygT&_nc_ht=scontent.ffnc1-1.fna&oh=00_AfC_0FPElj_uV50cx9T6goQ7eqhtitWi-sZiia7eOb4kMA&oe=65527788)
Como afirmou Edgar Silva, " não se pode continuar a permitir que as descargas de esgotos a céu aberto contaminem linhas de água, lesem áreas agrícolas, poluam ribeiros, ribeiras e o oceano. O saneamento básico seguro é essencial à promoção da saúde pública".