Ukusetyenziswa kokugcina amanzi emlilweni, ukwakhiwa kweshishini lomlilo, ngokweemfuno zalapha kunye nemigaqo ekufuneka uyikhethile.
Ngokuhambelana ngokungqongqo nomxholo wemigangatho yokhuseleko lokutya eyityabeka iipleyiti zentsimbi, iziqinisekiso ezithile ezifumanekileyo kunye nelungelo elilodwa lomenzi zinokujongwa kwiphepha elifanelekileyo.
Iitanki ze-GFS zibonelela ngokugcina amanzi / ukugcinwa kolwelo kwiindawo ezithile ezikhethekileyo (iindawo zeentaba, iziqithi, indawo zentlango).
Ingenziwa ngemfuneko ngokweemfuno zabathengi, ubungakanani betanki, umbala, inqanaba lokunyikima, njl.