Chemical and microbiological water quality of subsurface agricultural drains during a field trial of liquid dairy manure effluent application rate and varying tillage practices, Upper Tiffin Watershed, southeastern Michigan

2008 ◽  
Author(s):  
Sheridan Kidd Haack ◽  
Joseph W. Duris
2016 ◽  
Vol 69 (1-2) ◽  
pp. 76-88 ◽  
Author(s):  
Christina Frick ◽  
Wolfgang Zoufal ◽  
Christa Zoufal-Hruza ◽  
Alexander K. T. Kirschner ◽  
Dagmar Seidl ◽  
...  

2018 ◽  
Vol 10 (11) ◽  
pp. 1061-1082
Author(s):  
Abayomi Tolulope Oyewale ◽  
Taiwo Adekanmi Adesakin ◽  
Olaoluwa Oyedeji ◽  
Adedeji Idowu Aduwo ◽  
Mufutau Kolawole Bakare

Author(s):  
Stoimir Kolarević ◽  
Margareta Kračun-Kolarević ◽  
Jovana Jovanović ◽  
Marija Ilić ◽  
Momir Paunović ◽  
...  

2020 ◽  
Vol 20 (3) ◽  
pp. 871-877
Author(s):  
Ashish Tambi ◽  
Urmila Brighu ◽  
A. B. Gupta

Abstract Determining the microbial quality of drinking water by assessing the presence/absence (P/A) or enumeration of indicator bacteria continues to be widely practiced worldwide. However, rapid tests are required for microbiological water quality assessment so that the information is available in the shortest possible time for initiating a timely intervention. Traditional methods for the enumeration of indicator bacteria are not only expensive but also need trained personnel. We have developed a low-cost kit, MColiPAT, and have validated its application for detection of coliforms in drinking water using the IDEXX Colilert-18 Quanti tray method. MColiPAT kit medium was able to detect coliforms down to a level of 3.1 MPN/100 ml within 10.5 hours. The sensitivity and specificity of the kit were 95.45% and 100% respectively. MColiPAT is found to be reliable and accurate for the detection of coliforms in drinking water.


2019 ◽  
Vol 30 (2) ◽  
pp. 417-426 ◽  
Author(s):  
Maria Soledad Rodriguez ◽  
Melina Celeste Crettaz-Minaglia ◽  
Diamela Gianello ◽  
Mercedes Piaggio

Water ◽  
2018 ◽  
Vol 10 (6) ◽  
pp. 708 ◽  
Author(s):  
Ruth Quinn ◽  
Orlando Avis ◽  
Manon Decker ◽  
Alison Parker ◽  
Sandy Cairncross

2021 ◽  
Vol 43 ◽  
pp. e52901
Author(s):  
Patrícia Alexandre Evangelista ◽  
Mayara Andrade Martins de Souza ◽  
Iuri Emanuel de Paula Ferreira ◽  
Natan de Jesus Pimentel-Filho

This study aimed to evaluate the microbiological quality of the water of four ponds used for irrigation on the Lagoa do Sino Farm, as well as to perform the genotypic characterization of virulence factors in Escherichia coli isolates. Sampling was conducted for 11 months, between 2015 and 2016. Samples were analyzed for the presence of thermotolerant coliforms, E. coli and heterotrophs. DNA was extracted from E. coli isolates, followed by genotypic characterization by polymerase chain reaction. Agricultural activities and pesticides used in the sampling period were documented in order to assess possible relationships between agricultural activities and microbiological water quality. The absence of suitable riparian vegetation around all the ponds was observed, benefiting the entry of organic matter and contaminants in the water body. A high index of thermotolerant coliforms in some months indicated the possibility of the transmission of pathogenic microorganisms in these ponds. The values found in some months were above the regulatory limits for water potability and water intended for irrigation. The agrochemicals used in the period seem to influence the results obtained. All 17 E. coli isolates showed at least one of the virulence genes estA, stx1, stx2, and aatA, indicating enterotoxigenic, enterohaemorrhagic or enteroaggregative nature. The presence of E. coli in the waters may be associated with the presence of animals. The water samples analyzed are not suitable for irrigation of vegetables that are consumed raw and/or low lying fruits ingested without skin removal. It is essential to broaden the control of the use of chemicals, as well as the preservation of riparian vegetation to improve the quality of water used in the farm's agricultural activities.


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