Iitanki ze-GFS zisetyenziswa kakhulu kwimveliso yokugcina imveliso yamanzi. Inokuthwala amanzi amaninzi akhethekileyo okanye ulwelo, olufana ne-brine, amanzi acociweyo, amanzi amdaka, amanzi anetyuwa, amanzi athambileyo, amanzi e-RO, amanzi amdaka kunye namanzi amsulwa e-ultra.