SOUTH ETHIOPIA REGIONAL STATE WATER, MINES AND ENERGY BUREAU

For Wolayita Zone Water, Mines and Energy Department

For Gamo Zone Water, Mines and Energy Department

Subject: Notifying the Minimum Standard Requirement for Provision of Sustainable Water Service in Rural Areas.

As mentioned above, the PROCEED Initiative, in collaboration with civil society organizations and partners, and with financial support from the French Development Agency, has begun work to expand sustainable rural drinking water services in nine woreda of the two zones(Wolaita and Gamo) of the region.

In this regard, it is known that a rural drinking water supply design manual and standard guide line have been issued by the Federal Minister of Water and Energy. Accordingly the regional water, mines and energy bureau is responsible for establishing a strong system and insuring that the requirements are implemented. Therefore, the deputy bureau head and the water resources study and design department in collaboration with the regional PROCEED initiative task force are monitoring the implementation of the work in accordance with the requirements. We inform you that any government or non-governmental organizations that are implementing projects without meeting their obligations to ensure sustainable rural drinking water services should be aware of this and act accordingly. We also inform you that we will take action up to and including terminating the contract of organizations that fail to implement in accordance with the design manual.

With Regards,

Minimum technical standards for sustainable water service in rural areas

1. Must meet requirements

1.1 WUA and WUAF

Federation (WUAF) are responsible of water service and scheme management in the Kebele by delegation of the WUA that own the network (WASHCO are not recognized)

Regulation N102/2004 - new regulation under redaction

1.2 Proper excavation of springs

• Minimum 2m depth from original ground level

• All spring eyes visible

• Uniform impervious layer reached

• If this requirement cannot be met, the implementer need to define remediation measures.

Reference to legislation:

RWSDCaG - 2.2.9.2.1

Protecting gravity springs PP 89 (pdf: 111/280)

Reference to international Standards:

Excavation should be continued up to the point where the earth cover over the source is thick enough to provide the required protection for the catchment. For a rather impermeable loamy earth, a thickness of 2.0 meters may be enough. When the earth cover remains shallow, special measures have to be taken at the catchment as well as at the protection zone. Meuli, Spring Catchement, SKAT 2001, 5.2.2 p27

1.3 Spring box and manhole door can be easily opened and closed to enable spring maintenance and cleaning

Reference to legislation:

RWSDCaG - 2.2.5.4

Technical requirements for PP 34 (pdf: 56/280)

RWSDCaG – 2.2.9.2.4

Spring box consideration PP 95 (pdf: 117/280)

1.4 Overflow (not higher than spring eye) and washout are mandatory

If the level of over flow is higher than the lowest spring eye, the spring may change direction.

Correct over flow ensures no pressure/head in the spring .

Reference to international Standards:

Install an over flow pipe 5 to 10 cm above the supply pipe. This measure protects the spring catchment in the event of unexpected high flow during the rainy seasons or a blockage of supply pipe. Meuli, Spring Catchment, SKAT 2001, 5.2.4, p34

1.5 Static pressure on WP doesn’t exceed 60m

Locally found faucets cannot withstand head > 60m

Reference to legislation:

RWSDCaG – 4.3.3

Criteria for transmission pipe Table 4.9 PP 204 (pdf: 226/280)

1.6 Fenced spring protection

Reference to legislation:

RWSDCaG – 3.3.6

Source Protection PP 109 (pdf: 131/280)

RWSDCaG – 2.2.9.2.3

Finishing the protection PP 93 (pdf: 115/280)

1.7 HDPE and PVC pipes must be well buries in trench >= 60cm

Reference to legislation:

RWSDCaG – 4.2.3

Criteria for transmission Table 4.5 PP 195 (pdf: 217/280)

RWSDCaG – 4.3.3

Criteria for distribution Table 4.4 PP 204 (pdf: 226/280)

1.8 Dry season spring yield used to design to deliver water to HH (at least 15l/c/day) GTP I

Reference to legislation:

RWSDCaG - 2.2.9.2.5

Spring flow rate PP 95 (pdf: 117/280)

1.9 Restriction on private connections (Mode of service)

Reference to legislation:

RWSDCaG – 1.6.3.1

Indicative criteria for mode of service proportion

Table 1.10 PP 15 (pdf: 37/280)

2. Strongly advised additional requirements

2.1 Multiple water storage (reservoir) near community

2.2 Limitation of number of faucets and valve (Maintenance difficulty)

Type of water point according to its population