Mwea Rice Mills Ltd (MRM) is a subsidiary of the National Irrigation Authority. The rice mill is a limited liability company jointly owned by the Irrigation Authority (55%) and Mwea rice farmers through Mwea Rice Growers Multipurpose Co-operative Society Limited (MRGM) (45%).
Mwea Rice Mills Ltd dates back to May 1967 where it was incorporated in Kenya to operate as the main rice mill at Mwea Irrigation Scheme with its major function being storage, milling and marketing of rice from the Irrigation Scheme. Initially at the time of incorporation, the installed milling equipment comprised of four mills of a total rated capacity of 15 tons per hour on paddy basis which was enough to process the entire paddy produced in the scheme. However, in the early 1990s the grain sector including rice was liberalized. With this development, MRM was left to compete with other millers for paddy purchase and milling services to date.