Assessment of risks to public water supply from low flows and harmful water quality in a changing climate
Water resources planning and management by water utilities has traditionally been based on consideration of water availability. However, the reliability of public water supplies can also be influenced by the quality of water bodies. In this study, we proposed a framework that integrates analysis of...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Geological Union
2019
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| _version_ | 1797097279086133248 |
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| author | Mortazavi‐Naeini, M Bussi, G Elliott, J Hall, J Whitehead, P |
| author_facet | Mortazavi‐Naeini, M Bussi, G Elliott, J Hall, J Whitehead, P |
| author_sort | Mortazavi‐Naeini, M |
| collection | OXFORD |
| description | Water resources planning and management by water utilities has traditionally been based on consideration of water availability. However, the reliability of public water supplies can also be influenced by the quality of water bodies. In this study, we proposed a framework that integrates analysis of risks of inadequate water quality and risks of insufficient water availability. We have developed a coupled modelling system that combines hydrological modelling of river water quantity and quality, rules for water withdrawals from rivers into storage reservoirs, and dynamical simulation of harmful algal blooms in storage reservoirs. We use this framework to assess the impact of climate change, demand growth and land‐use change on reliability of public water supplies. The proposed method is tested on the River Thames catchment, in the South of England. The results show that, alongside the well‐known risks of rising water demand in the South of England and uncertain impacts of climate change, diffuse pollution from agriculture and effluent from upstream waste water treatment works potentially represents a threat to the reliability of public water supplies in London. We quantify the steps that could be taken to ameliorate these threats, though even a vigorous pollution‐prevention strategy would not be sufficient to offset the projected effects of climate change on water quality and the reliability of public water supplies. The proposed method can help water utilities to recognise their system vulnerability and evaluate the potential solutions to achieve more reliable water supplies. |
| first_indexed | 2024-03-07T04:53:14Z |
| format | Journal article |
| id | oxford-uuid:d5b3de23-f077-4f21-ac79-ec9d3de8b2ba |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:53:14Z |
| publishDate | 2019 |
| publisher | American Geological Union |
| record_format | dspace |
| spelling | oxford-uuid:d5b3de23-f077-4f21-ac79-ec9d3de8b2ba2022-03-27T08:27:55ZAssessment of risks to public water supply from low flows and harmful water quality in a changing climateJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d5b3de23-f077-4f21-ac79-ec9d3de8b2baEnglishSymplectic Elements at OxfordAmerican Geological Union2019Mortazavi‐Naeini, MBussi, GElliott, JHall, JWhitehead, PWater resources planning and management by water utilities has traditionally been based on consideration of water availability. However, the reliability of public water supplies can also be influenced by the quality of water bodies. In this study, we proposed a framework that integrates analysis of risks of inadequate water quality and risks of insufficient water availability. We have developed a coupled modelling system that combines hydrological modelling of river water quantity and quality, rules for water withdrawals from rivers into storage reservoirs, and dynamical simulation of harmful algal blooms in storage reservoirs. We use this framework to assess the impact of climate change, demand growth and land‐use change on reliability of public water supplies. The proposed method is tested on the River Thames catchment, in the South of England. The results show that, alongside the well‐known risks of rising water demand in the South of England and uncertain impacts of climate change, diffuse pollution from agriculture and effluent from upstream waste water treatment works potentially represents a threat to the reliability of public water supplies in London. We quantify the steps that could be taken to ameliorate these threats, though even a vigorous pollution‐prevention strategy would not be sufficient to offset the projected effects of climate change on water quality and the reliability of public water supplies. The proposed method can help water utilities to recognise their system vulnerability and evaluate the potential solutions to achieve more reliable water supplies. |
| spellingShingle | Mortazavi‐Naeini, M Bussi, G Elliott, J Hall, J Whitehead, P Assessment of risks to public water supply from low flows and harmful water quality in a changing climate |
| title | Assessment of risks to public water supply from low flows and harmful water quality in a changing climate |
| title_full | Assessment of risks to public water supply from low flows and harmful water quality in a changing climate |
| title_fullStr | Assessment of risks to public water supply from low flows and harmful water quality in a changing climate |
| title_full_unstemmed | Assessment of risks to public water supply from low flows and harmful water quality in a changing climate |
| title_short | Assessment of risks to public water supply from low flows and harmful water quality in a changing climate |
| title_sort | assessment of risks to public water supply from low flows and harmful water quality in a changing climate |
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