Ikigo Gishinzwe Umutungo Kamere w'Amazi mu Rwanda (RWB) ku bufatanye na Banki Nyafurika Itsura Amajyambere, (AfDB), batangije umushinga uzatwara miliyoni icyenda z'amadolari, ugamije guhangana n'ibibazo by'imihindagurikire y'ikirere mu ntara y'Iburengerazuba.