Seasonal variation in bacterial contamination of water sources with antibiotic resistant faecal coliforms in relation to pollution

Tripathi, Kshama; Sharma, Anoop

doi:10.31018/jans.v3i2.202

Cited by 8 publications

(6 citation statements)

References 13 publications

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“…Antibiotics have also been added to fish and crustacean sea foods in Tamilnadu state prior to export [ 16 ]. This increased and indiscriminate use of antibiotics for treatment, in animal husbandry, aquaculture and food preservation in the last two decades has contributed to the growing pool of antibiotic-resistant bacteria [ 9 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Antibiotic Resistance Characterization of Environmental E. coli Isolated from River Mula-Mutha, Pune District, India

Dhawde

Macaden²,

Saranath³

et al. 2018

IJERPH

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In the current study, ceftazidime- and ciprofloxacin-resistant—or dual drug-resistant (DDR)—E. coli were isolated from river Mula-Mutha, which flows through rural Pune district and Pune city. The DDR E. coli were further examined for antibiotic resistance to six additional antibiotics. The study also included detection of genes responsible for ceftazidime and ciprofloxacin resistance and vectors for horizontal gene transfer. Twenty-eight percent of the identified DDR E. coli were resistant to more than six antibiotics, with 12% being resistant to all eight antibiotics tested. Quinolone resistance was determined through the detection of qnrA, qnrB, qnrS and oqxA genes, whereas cephalosporin resistance was confirmed through detection of TEM, CTX-M-15, CTX-M-27 and SHV genes. Out of 219 DDR E. coli, 8.2% were qnrS positive and 0.4% were qnrB positive. Percentage of isolates positive for the TEM, CTX-M-15 and CTX-M-27 genes were 32%, 46% and 0.9%, respectively. None of the DDR E. coli tested carried the qnrA, SHV and oqxA genes. Percentage of DDR E. coli carrying Class 1 and 2 integrons (mobile genetic elements) were 47% and 8%, respectively. The results showed that antibiotic resistance genes (ARGs) and integrons were present in the E. coli isolated from the river at points adjoining and downstream of Pune city.

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Section: Introductionmentioning

confidence: 99%

Antibiotic Resistance Characterization of Environmental E. coli Isolated from River Mula-Mutha, Pune District, India

Dhawde

Macaden²,

Saranath³

et al. 2018

IJERPH

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“…Another influence to be considered in the survival rates are the seasonal variation, it well known that fecal survival bacterial rates can vary from a few minutes to many days depending upon the environmental conditions (Hughes, 2003). In this study seasonal variations of bacterial populations and their occupancy were surveyed in the water sources, and studies have shown that the numbers of bacteria increase in their densities (Drasar et al, 1981;Tripathi and Sharma, 2011;Javed et al, 2014;Nogueira et al, 2003;Maipa et al, 2001;and Van Donsel et al,1967). In a study nearby the area have reported that the coliform bacteria were highly isolated in Autumn and Winter (Almhgoob, 2005).…”

Section: Discussionmentioning

confidence: 95%

Bacteriological Assessment for Different Water Resources, Ka'am Region, Libya

Ali,

El Sharief,

Aborgabh

et al. 2015

JMSET

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Objectives: The principal sources of drinking water in the state of Libya are desalinated and underground well water. This study was carried out to determine the bacteriological quality of drinking and cultivation water obtained from the stream surface and wells water of the Ka'am Valley in Al-Khoms and the susceptibility of isolated bacteria to antimicrobial agents. Methods: Water samples taken from 80 different sources were examined for coliform, Escherichia coli, and also, Isolated bacteria were tested for their resistance to antibiotics by the BD Phoenix Automated Microbiology. Results: Of the water samples examined, 3 (3.75%) were positive for Escherichia coli, 46 (53.49%) for Coliform spp., and 37 (43.02%) for other gram-negative bacteria. 100% of the bacteria examined were resistant to at least one used antibiotic.

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“…According to Tripathi and Sharma [28], coliforms and faecal coliforms are established indicator organisms that are reliable for the detection of faecal contamination in water, due to sewage disposal or other sources. The groundwater samples from the southern landfill site showed an elevated concentration of both total coliform and E. coli in comparison to the northern landfill site over both seasons.…”

Section: Microbiological Characteristics Of Groundwater Samples From ...mentioning

confidence: 99%

The Influence of Non-Engineered Municipal Landfills on Groundwater Chemistry and Quality in Bloemfontein, South Africa

2020

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This study assessed the groundwater quality around two municipal solid waste landfill sites, in the city of Bloemfontein, Free State Province, South Africa. The two landfill sites are located in two contrasting geological terrains, with both lacking some basic facilities found in a well-designed landfill. A total of eight groundwater samples were collected from pollution monitoring boreholes near the two landfill sites, with five samples representing the northern landfill site and three samples representing the southern landfill site. The samples were collected in the autumn and winter seasons to assess any possible seasonal variations. They were analysed for physicochemical (pH, electrical conductivity (EC), total dissolve solids (TDS), chemical oxygen demand (COD) and total organic carbon (TOC)) and microbiological parameters (Escherichia coli, total coliform). The results of the analysis showed that the waters from both landfills were generally dominated by Ca, Mg, SO4, and HCO3 ions. Some of the major anions and cations in the water samples were above the South African National Standard (SANS241:2015) and World Health Organisation (WHO) permissible limits for drinking water. Majority of the boreholes had total dissolved solids and electrical conductivity values exceeding the SANS 241:2015 and WHO permissible limits. Piper trilinear plots for the two landfill sites showed that Ca(Mg)HCO3 water type predominates, but Ca(Mg)SO4 and Ca(Mg)Cl were also found. These water types were further confirmed with expanded Durov diagrams, indicating that that the boreholes represented a water type that is seldom found which is undergoing ion exchange, typical of sulphate contamination. From the SAR diagrams, boreholes in the northern landfill site had a high salinity hazard with only one borehole in the southern landfill site having a high salinity hazard. The geology was found to play a significant role in the distribution of contaminants into the groundwater systems in the study area. The study concluded that the northern landfill site had a poorer water quality in comparison to the southern landfill site based on the analysed physicochemical parameters. However, the southern landfill site showed significant microbial contamination, due to the elevated amount of E. coli and total coliform concentrations. The high permeability of the weathered dolerites in the northern landfill site might have enabled the percolation of contaminants into the groundwater resulting in the poorer water quality.

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Seasonal variation in bacterial contamination of water sources with antibiotic resistant faecal coliforms in relation to pollution

Cited by 8 publications

References 13 publications

Antibiotic Resistance Characterization of Environmental E. coli Isolated from River Mula-Mutha, Pune District, India

Antibiotic Resistance Characterization of Environmental E. coli Isolated from River Mula-Mutha, Pune District, India

Bacteriological Assessment for Different Water Resources, Ka'am Region, Libya

The Influence of Non-Engineered Municipal Landfills on Groundwater Chemistry and Quality in Bloemfontein, South Africa

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