The flooding of estates, hotels and farms around Lake Naivasha has led to massive pollution of the water body, raising fears of an environmental crisis in the coming days.

Raw sewage from the estates and hotels, coupled with fertilisers, is being washed into the lake on a daily basis even as water levels continue to rise.

The most affected areas are around Kihoto, Karagita landing beach and North Lake, which hosts dozens of small-scale farms and hotels.

Meanwhile, the number of people displaced by the rising water has surpassed 4,000, forcing them to seek alternative housing.