Nairobi’s water and sewer utility programme includes major upgrades at the Ruai and Kariobangi treatment facilities, designed to raise capacity as housing estates densify on the city’s eastern corridor.
When treatment lags population growth, raw sewage spills into rivers and informal drains—public health and environmental costs that hit low-income areas first.
Infrastructure is climate policy
Storm seasons overwhelm weak networks. Expanding treatment is as critical as new trunk sewers and last-mile connections households can actually afford.
