NAIROBI, Kenya Feb 18 – Thousands of households and businesses across Nairobi will experience a 26-hour water supply interruption beginning Friday morning, following a planned shutdown of the Sasumua Water Treatment Plant.
In a public notice, the Nairobi City Water and Sewerage Company (NCWSC) said the plant will be temporarily closed from 6:00 a.m. on February 20 to 8:00 a.m. on February 21, 2026, to facilitate essential maintenance works aimed at improving production efficiency and reliability.
The interruption is expected to affect a wide swathe of estates and commercial hubs across the capital.
Areas to Be Affected
Neighbourhoods in Westlands and Lavington, including Riverside Drive, Gitanga Road, Ole Ndume Road, King’ara Road and Riara Road, will experience reduced or no supply.
In Kileleshwa, roads such as Kandara, Gichugu and Othaya, as well as areas near St. George’s School and the Department of Defence, are also listed.
Parts of the University of Nairobi main campus and customers along Mamlaka Line and Valley Road will be affected, alongside large sections of Kilimani, including Argwings Kodhek Road, Hurlingham, Denis Pritt Road and the Coptic Hospital area.
Residents in Dagoretti, Kawangware and Waithaka, as well as Uthiru and Mutuini, will similarly experience service disruption.
The notice further lists Jamhuri Estate, Upper Hill and the Kenyatta National Hospital (KNH) vicinity, parts of Kibera, Kang’ethe and Togo Flats, Kangemi and Loresho, and sections of Lang’ata, Nairobi West and Madaraka.
In the leafy suburb of Karen, estates along Bogani Road, Lang’ata South Road, Ushirika and the Giraffe Centre area are also set to be impacted.
Diplomatic and commercial zones in Ngara, Gigiri and Limuru Road, including the Village Market, UNEP and the US Embassy area, have likewise been listed among affected locations.
Appeal to Residents
Acting Managing Director Martin Nang’ole urged consumers to use available water sparingly during the shutdown and to store sufficient supplies in advance.
“We appeal to all affected customers to use the available water sparingly during this interruption period,” the notice reads, adding that any inconvenience caused is highly regretted.
The Sasumua plant is one of Nairobi’s key water sources, and periodic maintenance is considered critical to stabilising supply in a city that continues to grapple with rising demand and aging infrastructure.
Residents seeking clarification have been advised to contact the company’s toll-free line or reach out through its official communication channels.
