Water Supply Chonyonyo
The citizens of Chonyonyo, Rukole and the area around have a very stressed water situation. Women and children walk several hours to reach natural water sources and the water is not of good quality. The aim of this project is to supply clean water to the villagers of Chonyonyo and Rukole and also to the Chonyonyo girls secondary school. We have a goal to serve 2500 people with good quality water but already now 5000 people will get benefits from the results of this project.
Engineers without Borders Sweden has a long record of working with MAVUNO in Karagwe in Tanzania. MAVUNO is an NGO working to “capacitate and empower rural communities in Karagwe and Kyerwa districts on sustainable development without any kind of prejudice”.
Water Supply System
In this project, we have studied different solutions for clean water supply to Chonyonyo. It has been discussed to drill new boreholes in a valley close to Chonyonyo. But there is a risk of not finding water and it is expensive to drill. Mavuno decided to use a borehole in Ihanda since it has shown to be a sustainable source of water. There seems to be enough water also to supply the villagers of Chonyonyo and Rukole. We have installed an instrument that will be used to follow up on the level of water in the borehole over time, important for long-term operation.
The water coming from the borehole is clean drinking water and it is important to keep it clean throughout the delivery chain. Therefore, we have calculated the sizes of the tanks in Chonyonyo and Rukole to meet with the daily consumption of water. Still standing water will quickly get contaminated in this climate. There are two tanks in Rukole and now three tanks in Chonyonyo, and there will be five later.
Water is pumped during daylight, with a pump driven by solar panels. The old pump in the borehole is run by electricity from the grid, pumping water daytime to the new system and night times to the tanks in Ihanda.
The system must overcome over 90 meters of height difference and 10 km of distance. The flow of water is about 5 m3 per hour.
The project team
The project team is a mix of people from Mavuno, led by Charles Bahati, and EWB Sweden professionals, led by Anders Ljungman. The team is spread over four different geographical areas.
Bengt Dahlgren AB has sponsored with consultancy hours for the system design and the rest of the Swedish team has participated on their free time.
All material and craftsmanship are sourced in Tanzania. Mwanza Plastics for the pipeline, Davis and Shirtliff in Mwanza for the pump, solar panels and vital components, local plumber, local builders and all the people digging the trench to mention some. The only components from Sweden are two safety valves which we got for free got for free from Ventim.
In the future
The most important project milestone to get water to the villagers was achieved and celebrated by having an inauguration. But we can't rest with this. We now need to continue by following up on the operation and secure the continuous running of the system. Ideas on how to increase the benefits for the villagers are under discussion and a phase 2 of the project.