AS ), ▁the ▁public ▁san itation ▁company . ▁S ON ES ▁own s ▁the ▁assets , ▁is ▁in ▁charge ▁of ▁invest ments ▁in ▁infrastr ucture , ▁and ▁reg ulation ▁of ▁S DE . ▁S DE ▁is ▁responsible ▁for ▁operation , ▁regular ▁maintenance , ▁some ▁invest ment ▁for ▁system ▁expansion , ▁as ▁well ▁as ▁b illing ▁and ▁collection . ▁According ▁to ▁the ▁World ▁Bank , ▁good ▁relationships ▁were ▁helped ▁by ▁the ▁fact ▁that ▁no ▁major ▁lay offs ▁were ▁necessary ▁during ▁the ▁re forms , ▁as ▁the ▁utility ▁was ▁not ▁very ▁over st aff ed ▁to ▁begin ▁with . ▁▁ 1 9 9 8 : ▁S ON ES ▁and ▁S DE ▁successfully ▁ren eg oti ate ▁several ▁un att ain able ▁targets ▁in ▁the ▁contract ▁without ▁resort ing ▁to ▁arbitr ation ▁or ▁lit ig ation . ▁▁ 1 9 9 8 : ▁A ▁Conseil ▁Sup érieur ▁de ▁l ’ E au , ▁pres ided ▁by ▁the ▁Prime ▁Minister , ▁is ▁created ▁to ▁set ▁policies ▁for ▁water ▁resources ▁management ▁and ▁water ▁supply . ▁▁ 1 9 9 9 : ▁The ▁pilot ▁project ▁RE GE FOR ▁is ▁initi ated ▁in ▁Central ▁Sen eg al ▁with ▁the ▁support ▁of ▁the ▁French ▁Development ▁Agency ▁AF D ▁with ▁the ▁objective ▁to ▁develop ▁new ▁management ▁principles ▁based ▁on ▁the ▁dis eng agement ▁of ▁the ▁State ▁in ▁favor ▁of ▁users ▁and ▁the ▁private ▁sector : ▁ ▁meter ing , ▁vol um et ric ▁pr icing , ▁trained ▁man agers ▁and ▁techn icians ▁and ▁clear ▁relationships ▁between ▁the ▁different ▁actors . ▁This ▁required