Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment

Abstract Quantitative predictions of impacts on public water supplies are essential for planning climate change adaptations. Monitoring data from five full-scale Scottish drinking water treatment plants (DWTPs) showed that significant correlations exist between conditionally carcinogenic trihalometh...

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Autores principales:	Maria Valdivia-Garcia, Paul Weir, David W. Graham, David Werner
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4f3df00872a84828b4ab495f1c1dee7a
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spelling	oai:doaj.org-article:4f3df00872a84828b4ab495f1c1dee7a2021-12-02T15:07:53ZPredicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment10.1038/s41598-019-46238-02045-2322https://doaj.org/article/4f3df00872a84828b4ab495f1c1dee7a2019-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-46238-0https://doaj.org/toc/2045-2322Abstract Quantitative predictions of impacts on public water supplies are essential for planning climate change adaptations. Monitoring data from five full-scale Scottish drinking water treatment plants (DWTPs) showed that significant correlations exist between conditionally carcinogenic trihalomethanes (THMs) levels, water temperature (r = 0.812, p = 0.0013) and dissolved organic carbon (DOC) (r = 0.892, p < 0.0001), respectively. The strong seasonality of these parameters demonstrated how climate can influence THMs formation. We quantified with laboratory experiments the sensitivity of THMs formation to changes in water temperature and DOC concentration. The laboratory data accurately reproduced real-world THM formation in the DWTPs. We then combined these validated relationships with information from the literature about future trends in mean summer temperatures and surface water DOC in the British Isles, to estimate future global warming impacts on THMs formation in DWTPs that use chlorine for disinfection. An increase in mean summer temperatures will likely increase THM formation, with a 1.8 °C temperature increase and 39% THMs increase by 2050 representing our mid-range scenario. Such an increase has major implications to potable water around the world, either an increased health risk or increased water treatment costs to maintain an equivalent quality potable supply.Maria Valdivia-GarciaPaul WeirDavid W. GrahamDavid WernerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-10 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Maria Valdivia-Garcia Paul Weir David W. Graham David Werner Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment
description	Abstract Quantitative predictions of impacts on public water supplies are essential for planning climate change adaptations. Monitoring data from five full-scale Scottish drinking water treatment plants (DWTPs) showed that significant correlations exist between conditionally carcinogenic trihalomethanes (THMs) levels, water temperature (r = 0.812, p = 0.0013) and dissolved organic carbon (DOC) (r = 0.892, p < 0.0001), respectively. The strong seasonality of these parameters demonstrated how climate can influence THMs formation. We quantified with laboratory experiments the sensitivity of THMs formation to changes in water temperature and DOC concentration. The laboratory data accurately reproduced real-world THM formation in the DWTPs. We then combined these validated relationships with information from the literature about future trends in mean summer temperatures and surface water DOC in the British Isles, to estimate future global warming impacts on THMs formation in DWTPs that use chlorine for disinfection. An increase in mean summer temperatures will likely increase THM formation, with a 1.8 °C temperature increase and 39% THMs increase by 2050 representing our mid-range scenario. Such an increase has major implications to potable water around the world, either an increased health risk or increased water treatment costs to maintain an equivalent quality potable supply.
format	article
author	Maria Valdivia-Garcia Paul Weir David W. Graham David Werner
author_facet	Maria Valdivia-Garcia Paul Weir David W. Graham David Werner
author_sort	Maria Valdivia-Garcia
title	Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment
title_short	Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment
title_full	Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment
title_fullStr	Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment
title_full_unstemmed	Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment
title_sort	predicted impact of climate change on trihalomethanes formation in drinking water treatment
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/4f3df00872a84828b4ab495f1c1dee7a
work_keys_str_mv	AT mariavaldiviagarcia predictedimpactofclimatechangeontrihalomethanesformationindrinkingwatertreatment AT paulweir predictedimpactofclimatechangeontrihalomethanesformationindrinkingwatertreatment AT davidwgraham predictedimpactofclimatechangeontrihalomethanesformationindrinkingwatertreatment AT davidwerner predictedimpactofclimatechangeontrihalomethanesformationindrinkingwatertreatment
_version_	1718388314105446400

Predicted Impact of Climate Change on Trihalomethanes Formation in Drinking Water Treatment

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