Prioritization approaches for substances of emerging concern in groundwater: a critical review

Gaston, Lorraine; Lapworth, Dan J. ORCID: https://orcid.org/0000-0001-7838-7960; Stuart, Marianne; Arnscheidt, Joerg. 2019 Prioritization approaches for substances of emerging concern in groundwater: a critical review. Environmental Science & Technology, 53 (11). 6107-6122. 10.1021/acs.est.8b04490

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Official URL: http://dx.doi.org/10.1021/acs.est.8b04490

Abstract/Summary

Risks from emerging contaminants (ECs) in groundwater to human health and aquatic ecology remain difficult to quantify. The number of ECs potentially found in groundwater presents challenges for regulators and water managers regarding selection for monitoring. This study is the first systematic review of prioritization approaches for selecting ECs that may pose a risk in groundwater. Online databases were searched for prioritization approaches relating to ECs in the aquatic environment using standardized key word search combinations. From a total of 672, 33 studies met the eligibility criteria based primarily on the relevance to prioritizing ECs in groundwater. The review revealed the lack of a groundwater specific contaminant prioritization methodology in spite of widely recognized differences between groundwater and surface water environments with regard to pathways to receptors. The findings highlight a lack of adequate evaluation of methodologies for predicting the likelihood of an EC entering groundwater and knowledge gaps regarding the occurrence and fate of ECs in this environment. The review concludes with a proposal for a prioritization framework for ECs in groundwater monitoring that enables priority lists to be updated as new information becomes available for substances with regard to their usage, physicochemical properties, and hazards.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1021/acs.est.8b04490
ISSN:	0013-936X
Additional Keywords:	GroundwaterBGS, Groundwater, Groundwater quality, Diffuse pollution, Pesticide pollution, Point source pollution, EOC
Date made live:	06 Aug 2019 13:27 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/524638

Item Type:

Publication - Article

Digital Object Identifier (DOI):

10.1021/acs.est.8b04490

ISSN:

0013-936X

Additional Keywords:

GroundwaterBGS, Groundwater, Groundwater quality, Diffuse pollution, Pesticide pollution, Point source pollution, EOC

Date made live:

06 Aug 2019 13:27 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/524638