Some parts of Nairobi County will experience water shortage. This is as a result of Nairobi City Water & Sewerage Company shutting down production at Sasumua Water Treatment Plant starting on Friday.
In a public notice, Nairobi Water said that the disruption is to carry out essential works aimed at improving production efficiency.
“The Nairobi City Water & Sewerage Company will temporarily shut down the Sasumua Water Treatment Plant from February 20 2026, at 6am to February 21, 2026, at 8am to carry out essential works aimed at improving production efficiency,” the notice read.
The areas expected to be affected include Westlands, Parklands, Riverside, Kileleshwa, Kilimani, Hurlingham, Dagoretti, Kangemi, Karen, Lang'ata, Southlands and parts of Ngara and Gigiri.
Other areas likely to experience disruptions include Kibera, Karanja Road, Olympic, Makina and parts of the main campus of the University of Nairobi and surrounding areas, as well as estates along Ngong Road, Waiyaki Way and Valley Road.
Residents in the Eastlands areas of Madaraka, Nairobi West and parts of Mbagathi Way will also experience interruptions.
The water company has explained that this temporary shutdown is necessary in order to carry out essential works at the treatment plant, which plays a significant role in supplying water to the city.
'The Nairobi City Water and Sewerage Company will temporarily shut down the Sasumua Water Treatment Plant to carry out essential works aimed at improving production efficiency,' the notice stated.
The utility has advised residents and institutions in the affected areas to use water sparingly during the interruption period and to store sufficient quantities in advance to minimise inconvenience.
Businesses, schools, hospitals and other institutions that rely heavily on water have also been urged to implement contingency measures to ensure the continuity of their operations.
The water supply is expected to resume progressively once the maintenance works are completed and the treatment plant is brought back into operation.
The company has apologised for any inconvenience caused and assured residents that these works are necessary to improve service delivery and ensure a more reliable water supply in the long term.
In recent years, Nairobi has faced periodic water shortages due to growing demand, ageing infrastructure, and dependence on a limited number of water sources.
Sasumua Dam in Nyandarua County is the second largest source of water for Nairobi City, supplying 11 per cent of the city's water.
The latest water shutdown comes a day after the Nairobi County signed an agreement with the National Government, a partnership anchored in Article 189 of the Constitution, which mandates cooperation between the two levels of government while preserving devolved authority.
The partnership will focus on modernising, among other things, water and sanitation services across the city, which is expected to expedite the Maragua 4 Dam project to increase the city’s water supply by 140 million litres.
The projects will be led by the Athi Water Works Development Agency (AWWDA), which is expected to oversee large-scale, long-term supply projects, including the construction of a new dam in Maragua, advancing the Northern Collector II Tunnel, and expanding trunk sewer lines.
