Trans Nzoia County Water & Sanitation Company Ltd (formerly known as Trans Nzoia County Water and Sewerage Company Ltd) was incorporated on 2nd July, 2020 under Companies Act, 2015. The company started its operations on 1st July 2024, following declustering of Nzoia Water Services Company Limited. The company is fully owned by the County Government of Trans Nzoia. The company is licensed by Water Services Regulatory Board (WASREB) as the sole water and sanitation services provider in TransNzoia County.