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Main Authors:	Gudisa, Iyasu, Mengistie, Bezatu, Desta, Adey Feleke, Alemayehu, Haile, Gari, Sirak Robele
Format:	Artículo científico
Language:	en
Published:	Environmental health insights 2026
Online Access:	https://pubmed.ncbi.nlm.nih.gov/42079487/
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author	Gudisa, Iyasu Mengistie, Bezatu Desta, Adey Feleke Alemayehu, Haile Gari, Sirak Robele
author_facet	Gudisa, Iyasu Mengistie, Bezatu Desta, Adey Feleke Alemayehu, Haile Gari, Sirak Robele Gudisa, Iyasu Mengistie, Bezatu Desta, Adey Feleke Alemayehu, Haile Gari, Sirak Robele
collection	PubMed - marine biology
contents	Indicator Bacteria-Based Assessment of Microbial Contamination with Wastewater-Agriculture-Health Nexus: Implication for Irrigation Water Safety in Gelan, Ethiopia. Gudisa, Iyasu Mengistie, Bezatu Desta, Adey Feleke Alemayehu, Haile Gari, Sirak Robele Urban rivers in rapidly urbanizing low-income countries frequently receive untreated wastewater, converting downstream irrigation systems into persistent exposure interfaces within a wastewater-agriculture-health nexus. This study quantified Escherichia coli and total coliform concentrations in irrigation water from 16 sites along the Akaki and Dongora Rivers in Gelan, Ethiopia, over 7 weeks (n = 112) using membrane filtration on CHROMagar™ ECC to assess spatiotemporal fecal contamination loads. Indicator bacteria were detected at all locations, with concentrations routinely surpassing internationally accepted limits for irrigation water by several orders of magnitude. The Escherichia coli concentrations ranged from 1.10 × 10 to 2.82 × 10 CFU/100 mL and total coliforms from 1.13 × 10 to 2.95 × 10 CFU/100 mL, with Akaki River loads substantially higher than the Dongora River (
format	Artículo científico
id	pubmed_42079487
institution	PubMed
language	en
publishDate	2026
publisher	Environmental health insights
record_format	pubmed
spellingShingle	Indicator Bacteria-Based Assessment of Microbial Contamination with Wastewater-Agriculture-Health Nexus: Implication for Irrigation Water Safety in Gelan, Ethiopia. Gudisa, Iyasu Mengistie, Bezatu Desta, Adey Feleke Alemayehu, Haile Gari, Sirak Robele Indicator Bacteria-Based Assessment of Microbial Contamination with Wastewater-Agriculture-Health Nexus: Implication for Irrigation Water Safety in Gelan, Ethiopia. Gudisa, Iyasu Mengistie, Bezatu Desta, Adey Feleke Alemayehu, Haile Gari, Sirak Robele Urban rivers in rapidly urbanizing low-income countries frequently receive untreated wastewater, converting downstream irrigation systems into persistent exposure interfaces within a wastewater-agriculture-health nexus. This study quantified Escherichia coli and total coliform concentrations in irrigation water from 16 sites along the Akaki and Dongora Rivers in Gelan, Ethiopia, over 7 weeks (n = 112) using membrane filtration on CHROMagar™ ECC to assess spatiotemporal fecal contamination loads. Indicator bacteria were detected at all locations, with concentrations routinely surpassing internationally accepted limits for irrigation water by several orders of magnitude. The Escherichia coli concentrations ranged from 1.10 × 10 to 2.82 × 10 CFU/100 mL and total coliforms from 1.13 × 10 to 2.95 × 10 CFU/100 mL, with Akaki River loads substantially higher than the Dongora River (
title	Indicator Bacteria-Based Assessment of Microbial Contamination with Wastewater-Agriculture-Health Nexus: Implication for Irrigation Water Safety in Gelan, Ethiopia.
url	https://pubmed.ncbi.nlm.nih.gov/42079487/

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