Residents of Kisumu have been urged to use water sparingly.
The residents were told the current drought will not end soon.
"Kiwasco abstracts water from two sources – River Kibos and Lake Victoria. Currently the water level in River Kibos has dropped significantly, forcing the company to reduce production at the Kajulu treatment plant,” said Kiwasco MD David Onyango said on Thursday as quoted by the Star.
Residents had earlier on complained of irregular supply, which has left them at the mercy of water vendors.
Onyango said some of the worst-hit areas include ADASA, Chiga, Gita, Kanyamedha, Kibos market, Kotunga, Kunya, parts of Nyamasaria, Otonglo, Rarieda and Tiengre.
"Affected customers are advised to store water and use it sparingly,” he said.
Onyango urged residents to be cautious when buying water.
He said the company has put in place measures to manage the low water supply.