Valuing the water supply: ecosystem-based potable water supply management for the Legedadie-Dire catchments, Central Ethiopia

Anteneh, Yilikal; Zeleke, Gete; Gebremariam, Ephrem

doi:10.1186/s13717-019-0160-1

Ecological Processes

Table 1 Attributes and levels used in the DCEs to improve EBWSM

From: Valuing the water supply: ecosystem-based potable water supply management for the Legedadie-Dire catchments, Central Ethiopia

No	Attributes	Description	Current status/status quo	Attribute levels
1	Water quality	Improvement of the quality of municipal drinking water from the source via upstream EBWSM interventions (reinstate riparian ecological conditions via buffering along rivers and reservoirs, application of conservation agriculture with controlled grazing, grass filter strips, and reforestation activities on degraded lands) in the Dire-Legedadie catchments. This can improve not only the surface water supply (such as water stored in the reservoirs) but also augment the potential of the upstream catchment in recharging groundwater sources (Akaki wellfields).	High risk of contamination	Risk-free and high-quality water
1	Water quality		High risk of contamination	Moderate water quality yet palatable and safe to drink
2	Water quantity	Application of upstream catchment EBWSM interventions (afforestation and reinstate riparian ecological conditions via buffering along rivers and reservoirs) that can initiate continuous water flow to reservoirs by reducing sedimentation and improving the storage capacity of the reservoirs in the Dire-Legedadie catchments. This will increase the drinking water supply. Such interventions can improve the surface water supply (such as water stored in the reservoirs) and also augment the potential of the upstream catchment in recharging groundwater sources (Akaki wellfields).	2–3 months of shortages annually (1 week–10 days/month)	No months of shortages
2	Water quantity		2–3 months of shortages annually (1 week–10 days/month)	1 month of shortages annually (2–3 days/month)
3	Water pressure	Management of water distribution systems and improvement of flow pressure by installing leak detection and pressure control equipment and other water distribution facilities that can conserve unnecessary drinking water leakage and unaccounted water losses.	Unpredicted and low pressure in most areas	Normal pressure (40 to 55 PSI)
	Compensation payment	Households’ WTP for an improved municipal water supply per month in addition to the monthly water bill.	No payment	12.50, 18, 21, 25, 29, and 36 ETB per month

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