Nairobi County issues public health alert as heavy rains trigger flooding, contamination fears
The county said the alert aims to curb potential health hazards caused by the rains, including water pollution, power-related accidents and drowning.
Nairobi County has issued a public health alert as heavy rains continue to pound the region, warning residents to report emergencies such as sewer bursts, flooding or foul-smelling tap water that may signal contamination.
In a notice, the county said the alert aims to curb potential health hazards caused by the rains, including water pollution, power-related accidents and drowning.
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“Due to the ongoing rains, please report any events or incidents that pose a risk to public health, flooding, sewer overflows or pipe bursts, dirty or foul-smelling tap water indicating pollution, fallen electrical poles or dangling wires posing electrocution risks, fallen trees blocking roads or damaging property, drowning in swollen rivers or flooded streets and submerged buildings or houses,” the county said in the alert.
Residents have been urged to contact the Nairobi City County Emergency Response and Dispatch Centre via the free call line 1508 for immediate assistance.
The county highlighted specific dangers linked to the heavy downpour, including flooding in low-lying areas, sewer leaks contaminating drinking water and electrical hazards from fallen poles or exposed wires.
Other risks include fallen trees obstructing roads or damaging property, drowning incidents in rivers or flooded streets and submerged buildings that could lead to structural damage or displacement.
The alert aligns with the Kenya Meteorological Department’s forecast issued on October 31, 2025, which predicted rainfall and thunderstorms across much of the country through November 1. Strong southeasterly winds exceeding 25 knots (approximately 12.5 metres per second) are expected in north-western Kenya.
The highlands west of the Rift Valley, including Kakamega, Bungoma, Kisumu, Kericho and Nakuru counties, will experience afternoon and evening showers and thunderstorms, with partly sunny mornings.
In the highlands east of the Rift Valley, covering Nairobi, Nyeri, Kirinyaga, Murang’a, and Embu, mornings will be cloudy before clearing to sunny intervals ahead of afternoon storms. Nairobi’s temperatures are forecast between 16°C and 23°C, with residents advised to anticipate localised flooding.
Other regions, including Turkana, Samburu, Marsabit, Mandera, and Garissa, are expected to have scattered rains and sunny intervals. The south-eastern lowlands, Machakos, Makueni, Kitui, and Kajiado, will see light morning rains and isolated afternoon showers, while the coast, including Mombasa, Kilifi and Lamu, will have mild showers interspersed with sunny periods.
The alert follows a landslide in Elgeyo Marakwet County on November 1, 2025, that killed 21 people.
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