Applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka
Identification and quantification of environmental and socio-economic impact risks and effective monitoring of water projects are crucial for sustainable water resource management. Hence, the present study was conducted with the objectives of identifying potential environmental risks of different st...
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2021
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oai:doaj.org-article:eb23a411c4274cc1a7659f8dbdcc08982021-11-06T07:15:35ZApplicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka1606-97491607-079810.2166/ws.2021.029https://doaj.org/article/eb23a411c4274cc1a7659f8dbdcc08982021-06-01T00:00:00Zhttp://ws.iwaponline.com/content/21/4/1735https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Identification and quantification of environmental and socio-economic impact risks and effective monitoring of water projects are crucial for sustainable water resource management. Hence, the present study was conducted with the objectives of identifying potential environmental risks of different stages of the development of a new water supply scheme located in the wet zone of Sri Lanka, and categorizing identified impacts based on their significance. A rapid environmental assessment (REA) was followed to identify the upstream point source pollution and downstream water uses in the immediate catchment. Subsequently, a semi quantitative approach was conducted to screen the environmental, social, and economic risks concerning likelihood and sensitivity of the impact. Besides, an analysis of physico-chemical and biological parameters of water quality was conducted in the intake location. The semi quantitative method highlighted that low and medium risk with ecological impacts (50%), low risks towards sustainability of water source (75%), medium level constructional impacts (60%), and very high-level impacts at the operational stage were available (50%). A water quality monitoring program revealed that Escherichia coli count, total coliform bacterial count, and colour of the water were above the standard limits in the nearby freshwater source. In conclusion, a similar approach can be implemented worldwide as a reference to determine the potential socio-environmental consequences in water supply projects to minimize the adverse impacts. Through this study, sustainable mitigation measures were proposed accordingly to prevent the impacts and to strengthen the long-term viability of the new Rural Water Supply Scheme. HIGHLIGHTS The safety of drinking water is an ongoing concern within the world.; To reach the targets of safe drinking water, sanitation services should be strengthened.; Identifying potential environmental risks of new water supply projects is crucial for sustainable water resource management.; Rapid environmental assessment and semi quantitative approaches can be applied to screen the socio-economic and environmental risks of water sanitization projects.; Results revealed 50% of ecological, 60% constructional impacts, and 50% operational stage impacts.; Implementing a sustainable environment plan is vital to control environmental impacts.;B. K. A. BellanthudawaD. HalwaturaN. M. S. K. NawalageH. M. A. K. HandapangodaS. R. Y. S. S. B. SundarapperumaD. KudagamaL. WijesingheW. D. DarshanaM. S. M. SifanD. M. J. L. DassanayakeJ. M. S. N. JayasuriyaP. L. A. D. C. PinnagodaR. M. C. Y. RathnayakaIWA Publishingarticleenvironmental impactsenvironmental riskmitigation measuressemi quantitative approachsustainable use of waterwater supplyWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 4, Pp 1735-1751 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
environmental impacts environmental risk mitigation measures semi quantitative approach sustainable use of water water supply Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 |
| spellingShingle |
environmental impacts environmental risk mitigation measures semi quantitative approach sustainable use of water water supply Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 B. K. A. Bellanthudawa D. Halwatura N. M. S. K. Nawalage H. M. A. K. Handapangoda S. R. Y. S. S. B. Sundarapperuma D. Kudagama L. Wijesinghe W. D. Darshana M. S. M. Sifan D. M. J. L. Dassanayake J. M. S. N. Jayasuriya P. L. A. D. C. Pinnagoda R. M. C. Y. Rathnayaka Applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka |
| description |
Identification and quantification of environmental and socio-economic impact risks and effective monitoring of water projects are crucial for sustainable water resource management. Hence, the present study was conducted with the objectives of identifying potential environmental risks of different stages of the development of a new water supply scheme located in the wet zone of Sri Lanka, and categorizing identified impacts based on their significance. A rapid environmental assessment (REA) was followed to identify the upstream point source pollution and downstream water uses in the immediate catchment. Subsequently, a semi quantitative approach was conducted to screen the environmental, social, and economic risks concerning likelihood and sensitivity of the impact. Besides, an analysis of physico-chemical and biological parameters of water quality was conducted in the intake location. The semi quantitative method highlighted that low and medium risk with ecological impacts (50%), low risks towards sustainability of water source (75%), medium level constructional impacts (60%), and very high-level impacts at the operational stage were available (50%). A water quality monitoring program revealed that Escherichia coli count, total coliform bacterial count, and colour of the water were above the standard limits in the nearby freshwater source. In conclusion, a similar approach can be implemented worldwide as a reference to determine the potential socio-environmental consequences in water supply projects to minimize the adverse impacts. Through this study, sustainable mitigation measures were proposed accordingly to prevent the impacts and to strengthen the long-term viability of the new Rural Water Supply Scheme. HIGHLIGHTS
The safety of drinking water is an ongoing concern within the world.;
To reach the targets of safe drinking water, sanitation services should be strengthened.;
Identifying potential environmental risks of new water supply projects is crucial for sustainable water resource management.;
Rapid environmental assessment and semi quantitative approaches can be applied to screen the socio-economic and environmental risks of water sanitization projects.;
Results revealed 50% of ecological, 60% constructional impacts, and 50% operational stage impacts.;
Implementing a sustainable environment plan is vital to control environmental impacts.; |
| format |
article |
| author |
B. K. A. Bellanthudawa D. Halwatura N. M. S. K. Nawalage H. M. A. K. Handapangoda S. R. Y. S. S. B. Sundarapperuma D. Kudagama L. Wijesinghe W. D. Darshana M. S. M. Sifan D. M. J. L. Dassanayake J. M. S. N. Jayasuriya P. L. A. D. C. Pinnagoda R. M. C. Y. Rathnayaka |
| author_facet |
B. K. A. Bellanthudawa D. Halwatura N. M. S. K. Nawalage H. M. A. K. Handapangoda S. R. Y. S. S. B. Sundarapperuma D. Kudagama L. Wijesinghe W. D. Darshana M. S. M. Sifan D. M. J. L. Dassanayake J. M. S. N. Jayasuriya P. L. A. D. C. Pinnagoda R. M. C. Y. Rathnayaka |
| author_sort |
B. K. A. Bellanthudawa |
| title |
Applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka |
| title_short |
Applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka |
| title_full |
Applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka |
| title_fullStr |
Applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka |
| title_full_unstemmed |
Applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of Sri Lanka |
| title_sort |
applicability of semi quantitative approach to assess the potential environmental risks for sustainable implementation of water supply schemes: a case study of sri lanka |
| publisher |
IWA Publishing |
| publishDate |
2021 |
| url |
https://doaj.org/article/eb23a411c4274cc1a7659f8dbdcc0898 |
| work_keys_str_mv |
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| _version_ |
1718443829269364736 |