WASAC Group Ltd ni kompanyi ishinzwe gucunga serivisi z’amazi n’isukura mu Rwanda, aho Leta y’u Rwanda ari yo ifite imigabane yose. Yashinzwe muri Nzeri 2023, ikorera binyuze mu bigo bibiri biyishamikiyeho: WASAC Utility, itanga serivisi z’amazi n’isukura, na WASAC Development, ishinzwe guteza imbere ibikorwa remezo by’amazi n’isukura. Iyi mpinduka yakozwe hagamijwe kunoza itangwa rya serivisi no gufasha igihugu kugera ku ntego zacyo mu by’amazi n’isukura.

Nubwo WASAC Group ari kompanyi nshya, amateka y’itangwa rya serivisi z’amazi n’isukura mu Rwanda atangira mu mwaka wa 1939, ubwo ubutegetsi bw’abakoloni bwashinga REGIDESO, yari ishinzwe gutanga amazi, amashanyarazi n’igitoro mu Rwanda-Urundi. Mu 1963, REGIDESO yaje kugabanywamo ibigo bibiri byigenga: icya Rwanda n’icya Burundi. Mu 1976, REGIDESO Rwanda yahindutse ELECTROGAZ, ihabwa ububasha bwihariye ku itangwa ry’amazi n’amashanyarazi mu gihugu. Nyuma ya Jenoside yo mu 1994, ubwikorezi bwihuse bwateje izamuka rikabije ry’ibikenewe by’amazi n’amashanyarazi, bigaragaza ko hakenewe kongerwa ubushobozi.

Mu 1999, hashyizweho itegeko rihagarika uburenganzira bwihariye kuri ELECTROGAZ, ritangira kwemerera abandi bashoramari bigenga kujya ku isoko. Mu 2003, ELECTROGAZ yahawe ubuyobozi bushya binyuze mu masezerano yo gucungwa na Lahmayer International na Hamburg Water Works mu rwego rwo kuvugurura imikorere yayo, ariko ayo masezerano yaje guhagarikwa mu 2006, ubuyobozi busubizwa Leta y’u Rwanda.

Mu 2008, ELECTROGAZ yagabanyijemo ibigo bibiri: RECO (Rwanda Electricity Corporation) na RWASCO (Rwanda Water and Sanitation Corporation), hashingiwe ku itegeko rishya. Mu 2010, ibyo bigo byombi byahujwe bibyara EWSA (Energy, Water and Sanitation Authority). Ariko nyuma y’imyaka ine, Leta yongeye kuvugurura EWSA, ibyara ibigo bibiri byigenga: REG, ishinzwe ingufu, na WASAC, ari na yo yaje kuvamo WASAC Group, ishinzwe gucunga serivisi z’amazi n’isukura mu Rwanda.