9 4 , ▁as ▁a ▁deput y ▁chair ▁of ▁the ▁CD U / CS U ▁group . ▁▁ ▁In ▁addition ▁he ▁accepted ▁a ▁junior ▁post ▁in ▁Dr . ▁K ohl ' s ▁new ▁government , ▁appointed ▁parliament ary ▁under secret ary ▁in ▁the ▁German ▁Ministry ▁for ▁the ▁Environment , ▁Nature ▁Conserv ation , ▁Building ▁and ▁N uc lear ▁Saf ety . ▁ ▁On ▁ 3 1 ▁January ▁ 1 9 9 4 ▁Wie cz ore k ▁res igned ▁his ▁minister ial ▁post ▁and ▁his ▁membership ▁of ▁the ▁Bund est ag ▁where ▁his ▁seat ▁was ▁taken ▁over ▁by ▁Christ a ▁Schmidt ▁for ▁the ▁two ▁months ▁remaining ▁till ▁the ▁next ▁general ▁election . ▁▁ ▁He ▁now ▁moved ▁to ▁an ▁important ▁position ▁as ▁chairman ▁of ▁the ▁board ▁at ▁the ▁Berlin ▁Water ▁Company . ▁▁ ▁This ▁proved ▁something ▁of ▁a ▁poison ed ▁ch al ice . ▁▁ ▁During ▁the ▁ 1 9 8 0 s ▁water ▁consum ers ▁in ▁West ▁Berlin ▁had ▁paid ▁some ▁of ▁the ▁lowest ▁tar iffs ▁in ▁the ▁Federal ▁Republic , ▁but ▁in ▁ 1 9 9 4 ▁a ▁new ▁legal ▁structure ▁was ▁created ▁for ▁the ▁company ▁supp lying ▁water ▁across ▁the ▁entire ▁reun ified ▁city ▁of ▁Berlin . ▁▁ ▁By ▁ 1 9 9 7 , ▁not ▁quite ▁three ▁years ▁into ▁ ▁Wie cz ore k ' s ▁time ▁at ▁the ▁top , ▁citizens ▁in ▁what ▁had ▁been ▁West ▁Berlin ▁had ▁experienced ▁a ▁ 1 0 0 % ▁increase ▁in ▁their ▁water ▁prices ▁since ▁reun ification ▁while ▁for ▁citizens ▁of ▁what ▁had ▁been