scholarly journals Microbiological quality of water from noncommunity supply wells in carbonate and crystalline aquifers of Pennsylvania

2002 ◽  
Keyword(s):  
Microbiological Quality ◽  
Quality Of Water

scholarly journals Are the defined substrate-based methods adequate to determine the microbiological quality of natural recreational waters?

2009 ◽  
Vol 8 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Marta Sofia Valente ◽  
Paulo Pedro ◽  
M. Carmen Alonso ◽  
Juan J. Borrego ◽  
Lídia Dionísio
Keyword(s):  
Standard Method ◽  
Membrane Filtration ◽  
Microbiological Quality ◽  
Recreational Waters ◽  
Total Coliforms ◽  
E Coli ◽  
Quality Of Water ◽  
Routine Monitoring ◽  
Rapid Tests

Monitoring the microbiological quality of water used for recreational activities is very important to human public health. Although the sanitary quality of recreational marine waters could be evaluated by standard methods, they are time-consuming and need confirmation. For these reasons, faster and more sensitive methods, such as the defined substrate-based technology, have been developed. In the present work, we have compared the standard method of membrane filtration using Tergitol-TTC agar for total coliforms and Escherichia coli, and Slanetz and Bartley agar for enterococci, and the IDEXX defined substrate technology for these faecal pollution indicators to determine the microbiological quality of natural recreational waters. ISO 17994:2004 standard was used to compare these methods. The IDEXX for total coliforms and E. coli, Colilert®, showed higher values than those obtained by the standard method. Enterolert® test, for the enumeration of enterococci, showed lower values when compared with the standard method. It may be concluded that more studies to evaluate the precision and accuracy of the rapid tests are required in order to apply them for routine monitoring of marine and freshwater recreational bathing areas. The main advantages of these methods are that they are more specific, feasible and simpler than the standard methodology.

scholarly journals The pursuit of good microbiological conditions in domestic softeners: a new improvement

2020 ◽  
Vol 18 (2) ◽  
pp. 200-206
Author(s):  
L. Bolelli ◽  
Elida Nora Ferri ◽  
Stefano Sangiorgi ◽  
Giuseppe Novelli ◽  
Stefano Girotti
Keyword(s):  
Pathogenic Bacteria ◽  
Microbiological Quality ◽  
Global Network ◽  
Plate Count ◽  
Bacteria Growth ◽  
Warm Environment ◽  
Quality Of Water ◽  
Softened Water ◽  
Generous Support

Abstract Effective resin disinfection is mandatory to ensure the microbiological quality of water treated by domestic softeners. The wet and sometimes warm environment inside the softener is ideal for bacteria growth. Our research was focused on the evaluation of the microbial quality of water from softeners sanitized by chlorine solutions or by electrolytic systems. We employed the heterotrophic plate count and specific tests to monitor the presence of opportunistic and pathogenic bacteria (Pseudomonas aeruginosa, Escherichia coli, enterococci, and coliforms). Completely new devices were equipped with a commercially available electrolytic system or with a newly patented one or sanitized by automatic or manual addition of chlorine solutions. In all cases, the contamination was reduced, not completely avoided. In particular, the patented electrolytic system significantly reduced bacterial proliferation in strongly contaminated devices. Our data confirm the difficulties encountered to solve the problem of microbiological quality of softened water and offer encouraging information on new possible solutions. This article has been made Open Access thanks to the generous support of a global network of libraries as part of the Knowledge Unlatched Select initiative.

scholarly journals Physicochemical and microbiological quality of water from a pilot domestic rainwater harvesting facility in Ireland

2010 ◽  
Vol 25 (4) ◽  
pp. 489-494 ◽  
Author(s):  
S. O'Hogain ◽  
L. McCarton ◽  
N. McIntyre ◽  
J. Pender ◽  
A. Reid
Keyword(s):  
Rainwater Harvesting ◽  
Microbiological Quality ◽  
Quality Of Water

scholarly journals Situational analysis of physico-chemical, biochemical and microbiological quality of water along Mohokare River, Lesotho

2019 ◽  
Vol 45 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Peter Chatanga ◽  
Victor Ntuli ◽  
Eltony Mugomeri ◽  
Tumo Keketsi ◽  
Noel V.T. Chikowore
Keyword(s):  
Microbiological Quality ◽  
Situational Analysis ◽  
Quality Of Water ◽  
Physico Chemical

scholarly journals A Comparison of Different Disinfectants on the Microbiological Quality of Water from the Dental Unit Waterlines of a Military Hospital

2015 ◽  
Vol 44 (2) ◽  
pp. 187-192
Author(s):  
Siang Ma Mei ◽  
Zalini Yunus ◽  
Ahmad Razi Mohamed Yunus ◽  
Zukri Ahmad ◽  
Farizah Abdul Fatah
Keyword(s):  
Microbiological Quality ◽  
Military Hospital ◽  
Quality Of Water ◽  
Dental Unit Waterlines

Microbiological quality of water from public drinking fountains in northwestern São Paulo, Brazil

2021 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Débora Regina Romualdo da Silva ◽  
Alessandra Alcantara De Almeida ◽  
Aparecida De Fátima Michelin ◽  
Teresa Marilene Bronharo ◽  
Camila Michele De Souza Hossotani ◽  
...  
Keyword(s):  
Microbiological Quality ◽  
Sao Paulo ◽  
São Paulo ◽  
Quality Of Water ◽  
Public Drinking
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