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MASTER'S THESIS - SuSanA

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6 Site visits and interviews with local stakeholders<br />

again by an expert hired by GIZ. It has to be checked carefully that no sanitation project for the sites is<br />

planned in the near future as this would mean that there is no need to investigate on it.<br />

The complete reports about the site visits and the interviews can be found in Appendix C. The village or site<br />

descriptions, that are the result of the visits and the interviews, do not include climatic or geological<br />

conditions as this was not considered as important for this kind of study. If sites will be selected for a<br />

sanitation project, geological and climate data of the area have to be gathered to adapt the technologies to<br />

it.<br />

6.2 Criteria for the selection of a site<br />

Criteria for the selection of appropriate sites where a small or medium size wastewater treatment plant can<br />

be implemented was discussed between GIZ junior expert Tina Eisele and the author in February 2012. The<br />

results as well as further ideas shall be presented at this point. Criteria will be divided into organisational,<br />

technical and additional criteria.<br />

Organisational criteria, that must be fullfilled:<br />

• Only project: There is no other sanitation project planned for the site at the moment or the next<br />

future. It has to be proofed that the site will not be connected to a central wastewater treatment<br />

plant located in the surrounding area.<br />

• Commitment: The commitment by mayor and inhabitants needs to be given and people want to<br />

improve the situation. People are willing to cooperate and to pay local contributions and the tariffs.<br />

Good contact between mayor and inhabitants isimportant.<br />

• Clear rsponsibility: It has to be clear if a water utility is covering the area or if the service will be<br />

under the commune/municipality. Responsibility for operation and maintenance has to be clarified<br />

to guarantee that the project will last when the donor leaves the site. Clear commitment to<br />

introduce tariffs and collect the bills to cover the costs is necessary.<br />

• Funds: Funds for construction have to be available.<br />

Technical criteria, that must or should be fullfilled:<br />

• Size: Preferred project size ranges between 200 and 2,000 PE.<br />

• Density: If canalisation is required, preferred villages are more or less dense, to keep costs for<br />

canalisation low.<br />

• Land availability: Land for the construction of a wastewater treatment plant must be available.<br />

• Slope: Land has little slope to collect and transport wastewater by gravity.<br />

• Exististance of sewer: A sewer system exists already and a wastewater treatment plant can be<br />

copnnected to it. This will help to keep the costs low as the most expensive part of a sanitation<br />

system will be the sewer system. If no sewer exists, a donor has to be found that covers the costs of<br />

a sewer system. No sewer system is neccessary if on-site treatment plants will be implemented.<br />

• Accessability: Road access for the construction vehicles is necessary. To ensure the possibility of<br />

using the plant for training purpose, the plant should be easy to access by road.<br />

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