Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
The Interaction Between Heterotrophic Bacteria and Coliform, Fecal Coliform, Fecal Streptococci Bacteria in the Water Supply Networks



Amanidaz N1 ; Zafarzadeh A2 ; Mahvi AH1, 3
Authors
Show Affiliations
Authors Affiliations
  1. 1. Dept. of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Research Center for Environmental Health, Department of Environmental Health Engineering, School of Public Health, Golestan University of Medical Sciences, Gorgan, Iran
  3. 3. Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran

Source: Iranian Journal of Public Health Published:2015

Abstract

Background: This study investigated the interaction between heterotrophic bacteria and coliform, fecal coliforms, fecal streptococci bacteria in water supply networks. Methods: This study was conducted during 2013 on water supply distribution network in Aq Qala City, Golestan Province, Northern Iran and standard methods were applied for microbiological analysis. The surface method was applied to test the heterotrophic bacteria and MPN method was used for coliform, fecal coliform and fecal strepto-cocci bacteria measurements. Results: In 114 samples, heterotrophic bacteria count were over 500 CFU/ml, which the amount of fecal coliform, coliform, and fecal streptococci were 8, 32, and 20 CFU/100 ml, respectively. However, in the other 242 samples, with heterotrophic bacteria count being less than 500 CFU/ml, the amount of fecal coliform, coliform, and fecal strepto-cocci was 7, 23, and 11 CFU/100ml, respectively. The relationship between heterotrophic bacteria, coliforms and fecal streptococci was highly significant (P<0.05). We observed the concentration of coliforms, fecal streptococci bacteria being high, whenever the concentration of heterotrophic bacteria in the water network systems was high. Conclusion: Interaction between heterotrophic bacteria and coliform, fecal coliforms, fecal streptococci bacteria in the Aq Qala City water supply networks was not notable. It can be due to high concentrations of organic carbon, bio-films and nutrients, which are necessary for growth, and survival of all microorganisms. © 2015, Iranian Journal of Public Health. All rights reserved.
Related Docs
1. Enhanced Biological Denitrification in the Cyclic Rotating Bed Reactor With Catechol As Carbon Source, Bioresource Technology (2015)
2. Synthesis and Characterization of Sno2 Crystalline Nanoparticles: A New Approach for Enhancing the Catalytic Ozonation of Acetaminophen, Journal of Hazardous Materials (2021)
3. Spatial and Temporal Variability of Fluoride Concentrations in Groundwater Resources of Larestan and Gerash Regions in Iran From 2003 to 2010, Environmental Geochemistry and Health (2016)
4. Microbial Quality and Physical–Chemical Characteristics of Thermal Springs, Environmental Geochemistry and Health (2016)
5. Carcinogenic and Non-Carcinogenic Risk Assessment of Heavy Metals in Groundwater Wells in Neyshabur Plain, Iran, Biological Trace Element Research (2019)
6. Survey of Drinking Water Quality of Household Water Treatment and Public Distribution Network in Garmsar City, Under the Control of Water Safety Plan, Iranian Journal of Health and Environment (2019)
Experts (# of related papers)
View all Related Experts
Kamyar Yaghmaeian (3)
Masoud Yunesian (2)