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GTAP Resources: Resource Display

GTAP Resource #7466

"Effects of Wastewater Regulation Policies on Italian Agriculture: A georeferenced approach using the SIMPLE-G framework"
by Ojeda, Maria Laura, Exequiel Romero Gomez, Luca Salvatici and Cristina Vaquero-Piñeiro


Abstract
In the face of rising water demand and climate change, sustainable water use is a growing concern for agriculture in Mediterranean countries like Italy. Although only 20.6% of Italy’s agricultural land is irrigated, it accounts for nearly 40% of total crop output, with strong regional disparities. Emilia-Romagna, for instance, heavily depends on irrigation for water-intensive crops. In this context, the reuse of treated wastewater emerges as a key strategy for circular economy and sustainable agriculture. While the EU only regulated its use in 2020 (Reg. 2020/741), Italy anticipated this with early legislation and transposed EU rules in 2023. However, local-level analyses of its impact remain limited. This paper uses the gridded version of the SIMPLE-G model adapted for to evaluate the potential effects of wastewater reuse policies, focusing on Emilia-Romagna. After building a 2017 georeferenced agricultural database, we simulate a baseline to 2030 under increasing demand, a climate change scenario with localized productivity shocks, and three wastewater reuse policy scenarios, assuming 30%, 47%, and 70% increases in surface water availability. Results quantify impacts on crop production, input use, and prices, offering insight into the role of wastewater in supporting climate-resilient and resource-efficient agriculture in Italy.


Resource Details (Export Citation) GTAP Keywords
Category: 2025 Conference Paper
Status: Not published
By/In: Presented during the 28th Annual Conference on Global Economic Analysis (Kigali, Rwanda)
Date: 2025
Version: 1
Created: Ojeda, M. (4/11/2025)
Updated: Ojeda, M. (4/11/2025)
Visits: 33
- Climate change policy
- Climate impacts
- Water availability
- Other data bases and data issues
- Agricultural policies
- Multi-scale and geospatial modeling
- Europe (Southern)
- European Union


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