Kiamugumo coffee factory is part of the New Ngariama Farmer’s Cooperative Society. Current membership stands at 1,500. Kiamugumo factory is situated at Ngariama location, Nyangeni sub-location Kirinyaga County. The factory treats all water in soak pits to ensure no contaminates run into the local waterways, which are a source for drinking water.

After picking, ripe cherry is brought to the factory by smallholder farmers, before it undergoes processing to remove the skin and pulp—known as the wet processing method. The nearest water source is the Kii River.