Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree Approach

In this study, we use the efficiency analysis trees (EAT) model to evaluate the efficiency of wastewater treatment plants (WWTPs), focusing on identifying the key variables that enhance their performance. While traditional methods consider factors such as the plant size, age, and technology, the EAT...

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Main Authors: Vicent Hernández-Chover, Águeda Bellver-Domingo, Lledó Castellet-Viciano, Francesc Hernández-Sancho
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/15/7/3423
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author Vicent Hernández-Chover
Águeda Bellver-Domingo
Lledó Castellet-Viciano
Francesc Hernández-Sancho
author_facet Vicent Hernández-Chover
Águeda Bellver-Domingo
Lledó Castellet-Viciano
Francesc Hernández-Sancho
author_sort Vicent Hernández-Chover
collection DOAJ
description In this study, we use the efficiency analysis trees (EAT) model to evaluate the efficiency of wastewater treatment plants (WWTPs), focusing on identifying the key variables that enhance their performance. While traditional methods consider factors such as the plant size, age, and technology, the EAT model improves the precision of and reduces errors in the efficiency estimation process. The results highlight the significance of facility size, particularly in areas with smaller populations, suggesting that economies of scale can play a crucial role in optimizing treatment processes. Centralizing the sector could lead to cost savings through ensuring better resource allocation and more effective management strategies. This study provides insights into how facility dimensions impact efficiency, aiding in strategic planning for wastewater treatment operations. The novelty of this study pertains to its implementation of the EAT model to assess efficiency from an economic point of view. Specifically, this makes it possible to identify which facility dimensions ensure better performance and, consequently, will help operators to establish criteria for intervention and geographical planning, both technically and economically.
format Article
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issn 2076-3417
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publishDate 2025-03-01
publisher MDPI AG
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series Applied Sciences
spelling doaj-art-d55a97ce00c444d78a746f7345aec8342025-08-20T02:09:14ZengMDPI AGApplied Sciences2076-34172025-03-01157342310.3390/app15073423Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree ApproachVicent Hernández-Chover0Águeda Bellver-Domingo1Lledó Castellet-Viciano2Francesc Hernández-Sancho3Water Economics Group, International Institute of Local Development (IILD-WATER), University of Valencia, C/Serpis 29, 46022 Valencia, SpainWater Economics Group, International Institute of Local Development (IILD-WATER), University of Valencia, C/Serpis 29, 46022 Valencia, SpainWater Economics Group, International Institute of Local Development (IILD-WATER), University of Valencia, C/Serpis 29, 46022 Valencia, SpainWater Economics Group, International Institute of Local Development (IILD-WATER), University of Valencia, C/Serpis 29, 46022 Valencia, SpainIn this study, we use the efficiency analysis trees (EAT) model to evaluate the efficiency of wastewater treatment plants (WWTPs), focusing on identifying the key variables that enhance their performance. While traditional methods consider factors such as the plant size, age, and technology, the EAT model improves the precision of and reduces errors in the efficiency estimation process. The results highlight the significance of facility size, particularly in areas with smaller populations, suggesting that economies of scale can play a crucial role in optimizing treatment processes. Centralizing the sector could lead to cost savings through ensuring better resource allocation and more effective management strategies. This study provides insights into how facility dimensions impact efficiency, aiding in strategic planning for wastewater treatment operations. The novelty of this study pertains to its implementation of the EAT model to assess efficiency from an economic point of view. Specifically, this makes it possible to identify which facility dimensions ensure better performance and, consequently, will help operators to establish criteria for intervention and geographical planning, both technically and economically.https://www.mdpi.com/2076-3417/15/7/3423corporate sustainabilitywastewater treatment plantefficiency analysis treesenvironmental economics
spellingShingle Vicent Hernández-Chover
Águeda Bellver-Domingo
Lledó Castellet-Viciano
Francesc Hernández-Sancho
Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree Approach
Applied Sciences
corporate sustainability
wastewater treatment plant
efficiency analysis trees
environmental economics
title Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree Approach
title_full Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree Approach
title_fullStr Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree Approach
title_full_unstemmed Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree Approach
title_short Economies of Scale and Efficiency in the Wastewater Treatment Sector: A Decision Tree Approach
title_sort economies of scale and efficiency in the wastewater treatment sector a decision tree approach
topic corporate sustainability
wastewater treatment plant
efficiency analysis trees
environmental economics
url https://www.mdpi.com/2076-3417/15/7/3423
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AT aguedabellverdomingo economiesofscaleandefficiencyinthewastewatertreatmentsectoradecisiontreeapproach
AT lledocastelletviciano economiesofscaleandefficiencyinthewastewatertreatmentsectoradecisiontreeapproach
AT franceschernandezsancho economiesofscaleandefficiencyinthewastewatertreatmentsectoradecisiontreeapproach