Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)

Groundwater is an essential resource for humans concerning freshwater supply; therefore, preserving and protecting its quality is necessary. Risk assessment, based on hazard, intrinsic vulnerability information and mapping, may be considered as a key aspect of sustainable groundwater management. An...

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Main Authors: José María Orellana-Macías, María Jesús Perles Roselló
Format: Article
Language:English
Published: MDPI AG 2022-01-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/14/2/202
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author José María Orellana-Macías
María Jesús Perles Roselló
author_facet José María Orellana-Macías
María Jesús Perles Roselló
author_sort José María Orellana-Macías
collection DOAJ
description Groundwater is an essential resource for humans concerning freshwater supply; therefore, preserving and protecting its quality is necessary. Risk assessment, based on hazard, intrinsic vulnerability information and mapping, may be considered as a key aspect of sustainable groundwater management. An approach has been made by combining the Nitrogen Input Hazard Index and the hydrogeological parameters considered in a modified DRASTIC method. A three-level classification has been used to determine the degree of risk, and the thresholds have been established following measurable criteria related to the potential nitrate concentration in groundwater. The second part of the study focused on estimating the socioeconomic impact of groundwater pollution by relating the degree of risk and social vulnerability to groundwater pollution. The method has been tested in the Gallocanta Groundwater Body (Spain). As a result, a risk map and an impact map are provided. The risk map shows that 67% of the study area can be classified as moderate and high-risk areas, corresponding to high hazard sources located in moderate and high vulnerability zones, whereas the impact of groundwater pollution is classified as moderate in the whole groundwater body. The proposed analysis allows comparison between aquifers in different areas and the results required by water authorities to implement control and mitigation measures.
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spelling doaj.art-b0034471f1ea45468ba4b01630c8fdb92023-11-23T15:44:29ZengMDPI AGWater2073-44412022-01-0114220210.3390/w14020202Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)José María Orellana-Macías0María Jesús Perles Roselló1Departamento de Investigación en Recursos Geológicos, Centro Nacional Instituto Geológico y Minero de España, 50006 Zaragoza, SpainDepartamento de Geografía, Universidad de Málaga, 29010 Málaga, SpainGroundwater is an essential resource for humans concerning freshwater supply; therefore, preserving and protecting its quality is necessary. Risk assessment, based on hazard, intrinsic vulnerability information and mapping, may be considered as a key aspect of sustainable groundwater management. An approach has been made by combining the Nitrogen Input Hazard Index and the hydrogeological parameters considered in a modified DRASTIC method. A three-level classification has been used to determine the degree of risk, and the thresholds have been established following measurable criteria related to the potential nitrate concentration in groundwater. The second part of the study focused on estimating the socioeconomic impact of groundwater pollution by relating the degree of risk and social vulnerability to groundwater pollution. The method has been tested in the Gallocanta Groundwater Body (Spain). As a result, a risk map and an impact map are provided. The risk map shows that 67% of the study area can be classified as moderate and high-risk areas, corresponding to high hazard sources located in moderate and high vulnerability zones, whereas the impact of groundwater pollution is classified as moderate in the whole groundwater body. The proposed analysis allows comparison between aquifers in different areas and the results required by water authorities to implement control and mitigation measures.https://www.mdpi.com/2073-4441/14/2/202groundwater contaminationrisk assessmentpollution sourcesintrinsic vulnerabilityGallocanta
spellingShingle José María Orellana-Macías
María Jesús Perles Roselló
Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)
Water
groundwater contamination
risk assessment
pollution sources
intrinsic vulnerability
Gallocanta
title Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)
title_full Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)
title_fullStr Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)
title_full_unstemmed Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)
title_short Assessment of Risk and Social Impact on Groundwater Pollution by Nitrates. Implementation in the Gallocanta Groundwater Body (NE Spain)
title_sort assessment of risk and social impact on groundwater pollution by nitrates implementation in the gallocanta groundwater body ne spain
topic groundwater contamination
risk assessment
pollution sources
intrinsic vulnerability
Gallocanta
url https://www.mdpi.com/2073-4441/14/2/202
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