23 August 2014

Tanzania: Lower Ruvu Pump Station Successfully Completed

Spencon technicians work on pipes at Lower Ruvu water pump station in Bagamoyo District. (File photo)

SUCCESSFUL completion of expansion work of Lower Ruvu water pump station in Bagamoyo district, Coast region will provide relief to Dar es Salaam residents who have gone for long without reliable water services.

With great enthusiasm, the Board Chairperson of the Dar es Salaam Water and Sewage Authority (DAWASA), Dr Eve-Hawa Sinare, recently informed journalists about successful testing of four newly installed pumps in Lower Ruvu station.

Each pump has installed capacity to push 90 million litres a day (MLD) to boost production from the source (Ruvu River) from 180 to 270 MLD. The chairperson led fellow board members on a site visit earlier this week.

"Pump testing confirmed operation capacity by 100 per cent. One out of four pumps will remain on standby while three others sustain the supply," Dr Sinare explained.

She added: "A modern water clarifier has been constructed at the site to decontaminate water before supplying to consumers. Power connection has also been perfectly accomplished and testing was equally successful." However, the tough job ahead required serious attention as well. 

"Distribution of water to reach consumers is the ultimate goal of Dawasa. Ongoing renovation of the main water storage tanks near Ardhi University is part of preparation to improve water distribution network," she said.

According to Dawasa Engineer Romanus Mwang'ingo, establishment of new water pipes of 1.8 metres diametre from Lower Ruvu station in Bagamoyo was in good progress as it has already been completed by 82 per cent.

Dawasa Chief Executive Officer (CEO), Mr Archard Mutalemwa spoke about some additional measures taken to address the challenge of varying water level (Ruvu River) due to long dry spells.

"The water level from Ruvu River which is the main supply source decreases so significantly, by 50 per cent operation capacity of installed water pumps at both Upper and Lower Ruvu pump stations. Some 200 million US dollars has already been secured for the construction of Kidunda dam upstream in Morogoro," Mr Mutalemwa explained.

Completion of Kidunda project which is scheduled for the next 40 months (3 years) was considered ideal to allow constant operation of the newly installed pumps. From the Kidunda dam at least 20 MW will be generated in addition to irrigation and fishing to the benefit of neighbouring communities.

"Drilling of deep wells in Mpera and Kimbiji and Kisarawe II is underway. Production of more than 260 MLD is expected and the aim is to supply Dar es Salaam with 760 MLD before end of next year," he clarified.

Collection of sewage remained yet another challenge that a lasting solution was needed. According to Mr Mutalemwa, hardly 30 per cent of dirt water was collected for treatment.

"Three water treatment plants will be constructed in Kurasini, another along Msimbazi valley near Muhimbili National Hospital and the third one near the White Sands Hotel along the beach line," he explained.

As for increased production and supply of water from Upper Ruvu, (Mlandizi area in Coast region), the board members witnessed ongoing construction of a modern water clarifier.

Implementation of the job goes together with expansion work of the pump station for increased capacity from 82 MLD to 196 MLD. The job is scheduled for completion in September next year.

New supply pipes of 1,200mm diametre will also be laid down from Ruvu to Kibamba and other pipes of 1,000mm diametre from Kibamba to Kimara will be laid alongside the high-tension electric supply line to minimize disturbance to residents. An agreement has been concluded between Dawasa and Tanesco.

At least four storage tanks will be constructed being part of the project. The National Water Policy recognizes the fundamental but intricate linkages between water and socio-economic development, including environmental requirements.

The Policy calls for an Integrated Water Resource Management approach to ensure equitable and sustainable use and management of water resources for socioeconomic development, and for maintenance of the environment.

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