Abstract: Safe drinking water access is a fundamental human right and is necessary for good health. The ineffective water delivery system in Kenya makes it difficult for water utilities to constantly provide quality water to consumers. Water maybe contaminated due to a variety of circumstances depending on the nature of operations occurring within the pipelines. This study focused on assessing the effect of distribution systems on drinking water quality in Kapsabet and Nandi Hills Towns. 348 water samples were collected at randomly selected taps for six months from November 2022 to April 2023 and analysis done in the laboratory for various water quality parameters.