Nairobi residents will soon dig deeper into their pockets for water and sewerage services after the Nairobi City Water and Sewerage Company (NCWSC) adjusted its tariffs for both domestic and commercial users.
With the new pricing, households consuming about 10,000 litres monthly will now pay Sh748, up from the previous Sh538. The changes were approved by the Water Services Regulatory Board (WASREB) after a public participation exercise.
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Water kiosks will now be billed at Sh44 per 1,000 litres, translating to less than Sh1 for a 20-litre jerrycan.
NCWSC explained that the 20 to 30 percent tariff increase is aimed at meeting rising operational expenses and financing improvements to outdated infrastructure.
Acting Managing Director Martin Nang’ole said the utility plans to lay 180 kilometres of new water pipelines and 100 kilometres of additional sewer lines. He noted that simplified sewer systems will also be introduced in informal settlements to expand coverage.
He pointed out that Nairobi’s population has surpassed five million, stretching the city’s existing water and sewer systems beyond their capacity.
The revised rates come amid rapid development in estates such as South B, South C, Kilimani and Kileleshwa, where high-rise and high-density projects are driving up demand for services.

According to Nang’ole, costs related to water treatment, sewer systems, electricity, materials and maintenance have increased significantly since the last tariff adjustment in 2023. He cautioned that without higher charges, sustaining upgrades and reliable service delivery would be challenging.
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He assured residents that the extra revenue will go toward rehabilitating infrastructure, improving efficiency and widening access to water services.
Planned projects also include building a six-kilometre Ngethu raw water pipeline and upgrading the backwash system at the Kabete treatment plant.
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