Severe drought in southwestern Zimbabwe has dried out water reserves in the city of Bulawayo, triggering widespread water outages that have left sewers clogged.
Local council has asked 1 million city residents to flush their toilets simultaneously in a bid to unclog the drains.
Officials hope the "group flush" will clear waste build-up in Bulawayo's sanitary facilities.
Drought conditions are expected to persist in the region until rainy season begins in November.
Bulawayo has been organizing synchronized toilet flushes since 1992.
With files from the Associated Press