Nairobi City Water and Sewerage Company (Nairobi Water) has announced fresh changes to its water supply, warning customers of longer periods without water across areas served by two major treatment plants.
In a press release issued on Monday, November 9, 2026, Nairobi City Water and Sewerage Company announced a 35% reduction in water production at Ngethu and Kigoro Water Treatment Plants.
“Nairobi City Water and Sewerage Company (Nairobi Water) wishes to inform its customers and the general public of a 35% reduction in water production at Ngethu and Kigoro Water Treatment Plants, following declining water levels at Thika/Ndakaini Dam,” the company said.
Seven Water Service Providers Affected
The reduction takes effect immediately and will likely result in extended water rationing for customers served by seven affected water service providers.
The affected providers are:
- Nairobi City Water and Sewerage Company.
- Githunguri Water and Sanitation Company.
- Kiambu Water and Sanitation Company.
- Karuri Water and Sanitation Company.
- Mavoko Water and Sewerage Company.
- Oloolaiser Water and Sewerage Company.
- Olkejuado Water and Sewerage Company.
Also Read: Nairobi Hospitals and Estates to Go Without Water for 24 Hours
Why Nairobi Water Has Reduced Production
According to the Nairobi Water, the dam has experienced a significant decline in storage levels due to below-average rainfall within its catchment area.
Reduced water inflows have forced the company to temporarily lower water abstraction to preserve available reserves and sustain supplies over the coming months.
Nairobi Water said the production reduction would likely result in longer water rationing periods for customers served by the seven affected providers.
“The reduction in production takes effect immediately and is likely to result in extended water rationing periods for customers served by the affected water service providers.”
Advisory to Customers
Nairobi Water said it was continuously monitoring water levels at the dam and prevailing weather conditions.
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The company added that it would review production volumes periodically based on reservoir recovery and water inflows.
It appealed to customers to use available water prudently, avoid wastage and prioritise essential household and other critical needs during the period.
The company also acknowledged the inconvenience caused by reduced production and appealed for public patience, understanding and cooperation as it manages the available water resources.
“We recognise the inconvenience that the reduced water production may cause and sincerely appeal for the public’s patience, understanding and cooperation as we work to sustainably manage the available water resources,” the company stated.
Customers seeking further information can contact Nairobi Water through its toll-free number, 0800 724366, or email [email protected].
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