Cited by 11Per- and polyfluoroalkyl substances researchWater Quality and Resources StudiesFluoride Effects and Removal

Perfluoroalkyl substances (PFASs) in groundwater and surface water in the Turin metropolitan area (Italy): An attempt to unravel potential point sources and compliance with environmental/drinking water quality standards

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Randazzo, A., Pavan, F., Gea, M., Maffiotti, A.·2025·Science of The Total Environment

Abstract

The study investigated the contribution of five potential point source categories on the occurrence of 19 highly hazardous perfluoroalkyl substances (PFASs) in freshwater from the Turin metropolitan area (Italy) and assessed the quality of groundwater and surface water in compliance with European and Italian guidelines. PFASs were revealed in 29 and 24 % of the investigated shallow (unconfined aquifers) and deep (semi- and confined aquifers) wells with a total concentration, as a sum (ΣPFASs), of 0.01–0.71 and 0.01–0.16 μg/L, respectively. The PFAS occurrence in shallow groundwaters appeared more related to (potentially-) contaminated and reclaimed areas, landfills and waste management plants rather than plants subjected to integrated environmental authorisations and wastewater treatment plants. Overall, PFAS occurrences increased with the degree of industrialisation and urbanisation in both unconfined and (semi-) confined aquifers. PFASs were found in 96 % of the sampling sites in streams with ΣPFASs values of 0.0002–0.47 μg/L, whilst they do not occur in the investigated lake. A slight correlation was found between wastewater treatment plants and the occurrence of PFASs in streams. The annual ΣPFASs loads downstream of the Turin metropolitan Area were estimated around 150–220 kg. Exceedances of the environmental and drinking water quality standards of Italy and Europe were frequently revealed. • Some exceedances of environmental/drinking quality standards of PFASs are revealed. • Exceedances occurred more in the unconfined than (semi-)confined aquifers. • PFASs in shallow groundwaters originate from contaminated areas and waste plants. • No evidence of PFAS releases is seen for industrial and wastewater treatment plants • PFAS mass loads in streams were slightly correlated with wastewater treatment plants

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Crossref · 10.1016/j.scitotenv.2024.177973

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Authors
Randazzo, A., Pavan, F., Gea, M., & Maffiotti, A.
Affiliations
Agenzia Regionale per la Protezione Ambientale del Piemonte (IT)
Corresponding author
Randazzo, A.
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2025-01
Volume
958
Pages
177973
ISSN
0048-9697 (ISSN-L)
OpenAlex
W4405312839
Cited by
11
References
91
Citations by year
2026: 7 · 2025: 4
FWCI
1.45
Type
journal article
Language
en
Open access
Locations
  • The Science of The Total Environment (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Physical Sciences › Environmental Science › Water Science and Technology › Water Quality and Resources Studies
  • Physical Sciences › Environmental Science › Water Science and Technology › Fluoride Effects and Removal
Keywords
perfluorinated compounds, PFAS contamination, groundwater, surface water, drinking water standards, point source detection, landfill contamination, wastewater treatment plants, urbanization, industrialization, unconfined aquifer, confined aquifer, Turin metropolitan area

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