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Fast urban growth of the city of Tete and poor sanitation facilities in the informal settlement form a hazard for the quality of the groundwater. This is also the case for the aquifer of the so called Nhartanda Valley, which is used for the drinking water supply of part of the city. The Nhartanda Valley is an old branch of the Zambeze river and situated near the center of the city of Tete. ARA-Zambeze is the responsible institution for the management of water resources, including groundwater. The Municipality of the city of Tete is responsible for urban planning and enforcement of these plans. Both organizations are collabarating since 2014 to implement measures and actions to avoid the pollution of the Nhartanda Valley aquifer. The action plan for this purpose has been approved by the Municipal Assembly in 2017 and involves other parties like e.g. the drinking water company FIPAG.
The protection of the groundwater is a complex process and involves technical measures, communication, community involvement, legal instruments. As there is limited experience on succesful approaches, an experimental approach with constant monitoring is appropriate. The philosophy of the Nhartanda Verde project fits in this approach.
A detailed plan for the implementation of the project will become available after conclusion of the *inception phase* of the project
- Inhabitants of the Matemba Neighbourhood
- Potential care takers / service providers of the public sanitation
+ Induce ownership by the Matemba community of the public spaces and sanddam, by their involvement in site selection, construction and maintenance
+ The neighbourhood community will get a stake in the sand dams by the opportunity to use the upstream area for urban agriculture
+ Design and construction for robust and low maintance infrastructure
+ Involvement of the municipality as owner of the public sanitation units
+ Management contract with private operators for operation and maintenance of the sanitation units
+ Awareness of the formal neighbourhood authorities by their involvement in all stages of the project
Overview of Goals
Forestation (partial) of the Nhartanda Valley to avoid actvities and soil use that pollute the aquifer.
Upgrade of 4 public spaces to Pocket Parks, including public sanitation facilities
Construction of 4 sand dams to intercept and biologically treat waste water
Results and indicators
- Improved quality of the public space in the neighbourhoud Matemba.
- Number of pocket parks realized
- Nutrient concentration
- Conentration of Nitrate, comparing upstream and downstream of the sand dams
- Reduced contamination of the groundwater of the Nhartanda Valley by nitrates and coliforms from faeces and urine
- Number of sand dams constructed
- Nutrient load
- Concentration of Nitrate in water, comparing upstream and downstream of the sand dams
- Forestation of the Nhartanda Valley
- Number of trees plantes
- Improved sanitation
- Number of public sanitation facilities realized