Kajiado North residents face a looming health crisis due to the absence of a designated sewerage system, the Oloolaiser Water and Sewerage Company (OLWASCO) has warned.
Speaking during the company’s Annual General Meeting (AGM) held on Friday, November 14, 2025 at the Oloolaiser Water Plaza, OLWASCO Managing Director Gladys Marima cautioned that lack of a dedicated sewer system in Kajiado County threatens the quality of drinking water in the region.
Marima expressed concern over reports of individuals discharging raw sewage into streams that drain into the Kiserian Dam, a key water source for the area. “When sewage finds its way into our water sources,” She noted that the practice forces the company to spend heavily on chemicals to treat contaminated water, a cost that ultimately raises consumer bills. “We are compelled to use more chemicals to make the water safe. This is not only costly but also unsustainable in the long run,” she said.
However, Marima assured residents that progress is being made. She highlighted the completion of designing the Ongata Rongai–Kiserian–Matasia–Ngong sewerage line, describing it as a milestone in expanding sewerage provision. Marima urged for timely allocation of funds to implement the project fully.
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In an exclusive interview with The Metropolitan Shopper, Marima remained optimistic: “We are confident that with the right support and timely funding, Kajiado North will soon benefit from a modern sewerage system that safeguards public health and reduces water treatment costs,” adding that upcoming affordable housing projects in Ngong and Ongata Rongai would pave the way for a dedicated sewer system to serve the growing population
County Executive Committee Member (CECM) for Water Services, Environment, Natural Resources and Climate Change, Michael Semera, echoed her concerns. He admitted that Kajiado County currently lacks a dedicated sewer system, relying instead on exhaustion services. Semera assured residents that decisive action is underway to ensure the county develops a comprehensive sewerage infrastructure in the near future.
This comes at a time when rapid urbanization in Kajiado North has heightened demand for reliable water and sanitation services. Stakeholders agree that without urgent investment in sewerage systems, residents risk facing escalating water bills and serious public health hazards.
By Masaki Enock
