Kenya Upgrades Water System Serving 5 Million People

Millions of Kenyans are about to benefit from a critical upgrade that will make their water supply more reliable for years to come.

The Athi Water Works Development Agency announced a carefully planned five-day shutdown starting April 7, 2026, to strengthen the Northern Collector Tunnel Bulk Water System. The system currently delivers 140 million litres of clean water every single day to communities across Nairobi, Kiambu, Murang'a, Kajiado, and Machakos counties.

The upgrades focus on two critical components. Workers will reinforce the raw water pipeline running from Ndakaini Dam to the Kigoro Water Treatment Plant, ensuring the system can handle growing demand. They'll also improve treated water transmission lines extending to the Gigiri Reservoir.

The agency emphasized these aren't emergency repairs. They're proactive investments in resilience and optimization, designed to prevent future problems and improve performance across the regional network.

Residents served by five major water companies will experience the temporary interruption, including those in Nairobi City, Gatanga, Oloolaiser, Mavoko, and the Export Processing Zone. The agency has asked people to store water in advance and use supplies carefully during the five-day period.

The Ripple Effect

This kind of infrastructure investment ripples far beyond convenience. Reliable water access supports public health, powers economic activity, and gives families stability. When water systems work well, children miss fewer school days due to waterborne illness. Businesses can operate predictably. Communities can grow sustainably.

The Northern Collector Tunnel represents Kenya's commitment to building infrastructure that serves its rapidly growing urban population. Rather than waiting for systems to fail, authorities are taking action to strengthen them now.

The shutdown runs from 8:00 a.m. Tuesday, April 7 through 8:00 a.m. Sunday, April 12. Five days of temporary inconvenience will deliver years of improved service for millions of people who depend on clean water every day.