Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water

Abstract This study investigated the changes in water quality and microbial risks resulting from trace metal pollutants in stagnant drinking water conditions using a 168-h experimental simulation and a metagenomic approach. The results showed that Fe(III) increased the water turbidity. Stagnation al...

Full description

Saved in:
Bibliographic Details
Main Authors: Bowei Li, Ling Feng, Rakia Chouari, Sofia Samoili, Stefanos Giannakis
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:npj Clean Water
Online Access:https://doi.org/10.1038/s41545-025-00436-8
Tags: Add Tag
No Tags, Be the first to tag this record!
_version_ 1823863442461687808
author Bowei Li
Ling Feng
Rakia Chouari
Sofia Samoili
Stefanos Giannakis
author_facet Bowei Li
Ling Feng
Rakia Chouari
Sofia Samoili
Stefanos Giannakis
author_sort Bowei Li
collection DOAJ
description Abstract This study investigated the changes in water quality and microbial risks resulting from trace metal pollutants in stagnant drinking water conditions using a 168-h experimental simulation and a metagenomic approach. The results showed that Fe(III) increased the water turbidity. Stagnation also caused significant biofilm growth, which was increased by trace metal pollutants, resulting in a higher production of extracellular polymeric substances (EPS). Adaptive mechanisms of bacterial communities dominated by Pseudomonadota in response to trace metal pollutant stress were discovered. Pathogenic bacteria, particularly Salmonella enterica and Pseudomonas aeruginosa, were found in stagnant drinking water, potentially exacerbated by Al(III). The overall exposure risk of antibiotic resistance genes (ARGs) increased, whereas Fe(III) enhanced the co-occurrence of ARGs and pathogens, potentially leading to serious hidden microbial risks. This study reveals imperceptible microbial risks posed by trace metal pollutants in stagnant drinking water, providing scientific warning and advice for drinking water safety.
format Article
id doaj-art-df39701893c0461ebebf6787fbf39965
institution Kabale University
issn 2059-7037
language English
publishDate 2025-02-01
publisher Nature Portfolio
record_format Article
series npj Clean Water
spelling doaj-art-df39701893c0461ebebf6787fbf399652025-02-09T12:09:18ZengNature Portfolionpj Clean Water2059-70372025-02-018111210.1038/s41545-025-00436-8Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking waterBowei Li0Ling Feng1Rakia Chouari2Sofia Samoili3Stefanos Giannakis4Inner Mongolia Key Laboratory of Environment Pollution Control & Waste Resource Reuse, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau and Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia UniversityInner Mongolia Key Laboratory of Environment Pollution Control & Waste Resource Reuse, Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau and Inner Mongolia Key Laboratory of Grassland Ecology, School of Ecology and Environment, Inner Mongolia UniversityUniversity of Carthage, Laboratory of Plant Toxicology and Environmental Microbiology (LR18ES38), Faculty of Sciences of BizerteInstituto Superior de Ciências do Trabalho e da Empresa-Instituto Universitário de Lisboa (ISCTE-IUL), Business Research Unit (BRU-IUL), Avenida das Forças ArmadasUniversidad Politécnica de Madrid (UPM), E.T.S. de Ingenieros de Caminos, Canales y Puertos, Departamento de Ingeniería Civil: Hidráulica, Energía y Medio Ambiente, Environment, Coast and Ocean Research Laboratory (ECOREL-UPM)Abstract This study investigated the changes in water quality and microbial risks resulting from trace metal pollutants in stagnant drinking water conditions using a 168-h experimental simulation and a metagenomic approach. The results showed that Fe(III) increased the water turbidity. Stagnation also caused significant biofilm growth, which was increased by trace metal pollutants, resulting in a higher production of extracellular polymeric substances (EPS). Adaptive mechanisms of bacterial communities dominated by Pseudomonadota in response to trace metal pollutant stress were discovered. Pathogenic bacteria, particularly Salmonella enterica and Pseudomonas aeruginosa, were found in stagnant drinking water, potentially exacerbated by Al(III). The overall exposure risk of antibiotic resistance genes (ARGs) increased, whereas Fe(III) enhanced the co-occurrence of ARGs and pathogens, potentially leading to serious hidden microbial risks. This study reveals imperceptible microbial risks posed by trace metal pollutants in stagnant drinking water, providing scientific warning and advice for drinking water safety.https://doi.org/10.1038/s41545-025-00436-8
spellingShingle Bowei Li
Ling Feng
Rakia Chouari
Sofia Samoili
Stefanos Giannakis
Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water
npj Clean Water
title Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water
title_full Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water
title_fullStr Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water
title_full_unstemmed Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water
title_short Trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water
title_sort trace metals induce microbial risk and antimicrobial resistance in biofilm in drinking water
url https://doi.org/10.1038/s41545-025-00436-8
work_keys_str_mv AT boweili tracemetalsinducemicrobialriskandantimicrobialresistanceinbiofilmindrinkingwater
AT lingfeng tracemetalsinducemicrobialriskandantimicrobialresistanceinbiofilmindrinkingwater
AT rakiachouari tracemetalsinducemicrobialriskandantimicrobialresistanceinbiofilmindrinkingwater
AT sofiasamoili tracemetalsinducemicrobialriskandantimicrobialresistanceinbiofilmindrinkingwater
AT stefanosgiannakis tracemetalsinducemicrobialriskandantimicrobialresistanceinbiofilmindrinkingwater