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Ecosystem service impacts of urban water supply and demand management


Kandulu, JM and Hatton MacDonald, D and Dandy, G and Marchi, A, Ecosystem service impacts of urban water supply and demand management, Water Resources Management, 31, (15) pp. 4785-4799. ISSN 0920-4741 (2017) [Refereed Article]

Copyright Statement

# Springer Science+Business Media B.V. 2017

DOI: doi:10.1007/s11269-017-1778-3


Utilities face the challenge of enhancing long-term water security while minimising undesirable economic, social and environmental impacts of supply and demand management options. This paper provides an example of how the ecosystem services concept can be used to enumerate and organise broad impacts of water supply options. A case study of Adelaide, South Australia, is used to examine costs and benefits associated with different sources of water and source-water mix scenarios. Ecosystem service impacts are estimated using estimates from the literature. Seven water supply and demand management options are considered for Adelaide:

1) the River Murray,

2) Mt. Lofty Ranges catchments,

3) wastewater reuse,

4) desalination,

5) stormwater harvesting,

6) groundwater and

7) water conservation.

The largest costs are associated with sourcing water from conservation measures such as water restrictions on outdoor watering estimated at $1.87/kL. Salinity damage costs associated with residential uses are estimated at up to $1.54/kL. Salinity damage costs of wastewater reuse were estimated at $1.16/kL. The largest benefit is coastal amenity services associated with stormwater harvesting and treatment estimated at $1.03/kL. Results show that there is a trade-off between financial costs and ecosystem services impacts with source-water mix scenarios with the highest ecosystem services cost having the lowest financial O&M cost and vice versa. This highlights the importance of taking ecosystem services into account when evaluating water supply options.

Item Details

Item Type:Refereed Article
Keywords:water security, water supply options, environmental impacts, externalities, demand management
Research Division:Economics
Research Group:Applied economics
Research Field:Environment and resource economics
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Environmental policy, legislation and standards
Objective Field:Environmental protection frameworks (incl. economic incentives)
UTAS Author:Hatton MacDonald, D (Professor Darla Hatton MacDonald)
ID Code:122075
Year Published:2017
Web of Science® Times Cited:5
Deposited By:TSBE
Deposited On:2017-10-30
Last Modified:2018-05-24

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