TY - JOUR
T1 - Mitigation options for futurewater scarcity
T2 - A case study in Santa Cruz Island (Galapagos Archipelago)
AU - Reyes, Maria Fernanda
AU - Trifunović, Nemanja
AU - Sharma, Saroj Kumar
AU - Behzadian, Kourosh
AU - Kapelan, Zoran
AU - Kennedy, Maria D.
PY - 2017/8/12
Y1 - 2017/8/12
N2 - Santa Cruz Island (Galápagos Archipelago), like many other tourist islands, is currently experiencing an exponential increase in tourism and local population growth, jeopardizing current and future water supply. An accurate assessment of the future water supply/demand balance is crucial to capital investment for water infrastructure. This paper aims to present five intervention strategies, which are suggested to solve the future water crisis. The strategies combined include environmentally sustainable options such as rainwater harvesting, greywater recycling and water demand management, as well as desalination. These strategies were evaluated under four population growth scenarios (very fast, fast, moderate and slow growths) by using several Key Performance Indicators (KPI's) including water demand, leakage levels, total costs, energy consumption, rainwater delivered and greywater recycled. Moreover, it also aims to develop a methodology for similar islands, using the WaterMet2 modelling approach, a tool for integrated of sustainable-based performance of urban water systems. The results obtained show that by 2044 only a small portion of the future water demand can be covered assuming business as usual. Therefore, desalination seems to be the most viable option in order to mitigate the lack of water at the end of the planning period considering the growth trends. However, strategies comprising more environmentally friendly alternatives may be sufficient, but only under slow population growth scenarios.
AB - Santa Cruz Island (Galápagos Archipelago), like many other tourist islands, is currently experiencing an exponential increase in tourism and local population growth, jeopardizing current and future water supply. An accurate assessment of the future water supply/demand balance is crucial to capital investment for water infrastructure. This paper aims to present five intervention strategies, which are suggested to solve the future water crisis. The strategies combined include environmentally sustainable options such as rainwater harvesting, greywater recycling and water demand management, as well as desalination. These strategies were evaluated under four population growth scenarios (very fast, fast, moderate and slow growths) by using several Key Performance Indicators (KPI's) including water demand, leakage levels, total costs, energy consumption, rainwater delivered and greywater recycled. Moreover, it also aims to develop a methodology for similar islands, using the WaterMet2 modelling approach, a tool for integrated of sustainable-based performance of urban water systems. The results obtained show that by 2044 only a small portion of the future water demand can be covered assuming business as usual. Therefore, desalination seems to be the most viable option in order to mitigate the lack of water at the end of the planning period considering the growth trends. However, strategies comprising more environmentally friendly alternatives may be sufficient, but only under slow population growth scenarios.
KW - Intervention strategy
KW - Key performance indicators
KW - Water demand prediction
KW - Water scarcity
KW - WaterMet
UR - http://www.scopus.com/inward/record.url?scp=85027553016&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:6e0d6cd9-4f8f-4edb-a822-1937d0e9f99d
U2 - 10.3390/w9080597
DO - 10.3390/w9080597
M3 - Article
AN - SCOPUS:85027553016
VL - 9
JO - Water
JF - Water
SN - 2073-4441
IS - 8
M1 - 597
ER -
