Water quality assessment for beach balneability on the beach Beira Rio - Porto Nacional – TO / Avaliação da qualidade das águas para balneabilidade na praia Beira Rio – Porto Nacional – TO

2021 ◽  
Vol 7 (6) ◽  
pp. 55661-55670
Author(s):  
Ângelo Ricardo Balduino ◽  
Salomão Rodrigues De Castro Filho
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Leisure Activities ◽  
Health And Safety ◽  
Water Quality Assessment ◽  
Microbiological Analysis ◽  
Total Coliforms ◽  
Safety Standards ◽  
Bathing Waters ◽  
Favorable Conditions

The Tocantins River has abundant water resources and favorable conditions for recreational activities, with emphasis on the beautiful natural beaches formed along its length. However, it is worth noting that the main contact entertainment and leisure activities require specific health and safety standards for bathing purposes. This study evaluated the water quality of Praia Beira Rio, in Porto Nacional-Tocantins, in only one point. For this purpose, microbiological analysis was performed using indicators of total coliforms and Escherichia coli (E. coli) following the method described by APHA (2005). The monitoring results were compared with the parameters for bathing purposes defined in CONAMA Resolution 274/00. To detect and identify total coliforms and Escherichia coli, the Colilert technique was used. The Escherichia coli content was low, allowing bathing waters to be classified as their own, according to CONAMA Resolution No. 274/00, and subdivided into the "excellent" category. Therefore, according to the bacterial indicators of the Escherichia coli group, during the analysis period, the waters of Praia Beira Rio were within the standards for primary contact recreation.

scholarly journals Chemical and bacteriological analysis of the water from drinking fountains located in a Higher Education Institution

2021 ◽  
Vol 10 (2) ◽  
pp. e8010212145
Author(s):  
Josidel Conceição Oliver ◽  
Ramon Alves de Oliveira Paula ◽  
Sandra Maria Oliveira Morais Veiga
Keyword(s):  
Higher Education ◽  
Escherichia Coli ◽  
Water Quality ◽  
Rainy Season ◽  
Education Institution ◽  
Plate Count ◽  
Higher Education Institution ◽  
Total Coliforms ◽  
Corrective Measures ◽  
Two Stages

The aim of this study was to evaluate, through chemical and bacteriological parameters, the water quality from drinking fountains at a Federal Higher Education Institution, in different climatic periods. Total coliforms and Escherichia coli were quantified by the enzyme method of the defined substrate; heterotrophic bacteria by plating in depth in Plate Count Agar; pH and chlorine, using commercial kits. The research was conducted in two stages: the first one, referring to the initial analyses during the rainy season, with the verification of the presence of samples in disagreement with the current legislation; and the second, during the dry period, after the corrective measures adopted in function the results obtained in the first stage, totalling 89 samples in both stages, from 49 drinking fountains. In the first stage, bacteriological evaluations showed that 65.3 % of the samples were inadequate, while in the second, the failure rate was 20.4 %. The parameters evaluated in the two stages revealed that there was no significant result (p˃0.05) in relation to pH, total coliforms and Escherichia coli. Unlike what was observed for mesophilic aerobic and chlorine content (p<0.05), which are believed to have been influenced by climatic conditions, with higher rates of non-compliance in the first stage, that is, found in the rainy season. These findings demonstrate the existence of inadequate hygienic-sanitary conditions and the need of frequent monitoring of water quality, as well as the positive impact after the educational intervention and the adoption of preventive and corrective measures, aimed at the safety of the consumer community.

scholarly journals Avaliação da qualidade das águas superficiais na circunscrição hidrográfica do rio Piranga utilizando análise estatística multivariada e não-paramétrica

2021 ◽  
Vol 14 (2) ◽  
pp. 694
Author(s):  
Micael De Souza Fraga ◽  
Laura Thebit de Almeida ◽  
Marcel Carvalho Abreu ◽  
Felipe Bernardes Silva ◽  
Guilherme Barbosa Reis ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Heavy Metals ◽  
Water Quality ◽  
Soil Erosion ◽  
Surface Water Quality ◽  
Principal Component ◽  
Water Quality Assessment ◽  
Minas Gerais ◽  
Data Set ◽  
Domestic Effluents

No estado de Minas Gerais, as campanhas de coleta e análise da qualidade da água nos corpos hídricos contemplam até 51 variáveis, o que dificulta a análise e interpretação desse conjunto de dados e a identificação das variáveis determinantes para a qualidade da água. Diante disso, o objetivo deste trabalho foi identificar as principais fontes de poluição, bem como o comportamento da qualidade da água ao longo do tempo de monitoramento, por meio de diferentes análises estatísticas na circunscrição hidrográfica do rio Piranga. Pelos resultados obtidos, a análise fatorial/análise de componentes principais apontou a alta susceptibilidade que a bacia apresenta à erosão do solo, a contaminação pelo lançamento de efluentes domésticos e a variabilidade da qualidade das águas em virtude dos metais pesados. As variáveis Escherichia coli, ferro dissolvido, fósforo total e manganês total apresentaram os valores de violação da classe de enquadramento mais críticos. A análise de tendência mostrou padrões diferentes para o índice de qualidade da água e para as variáveis mais relevantes para a qualidade da água. Dentre as variáveis que compõe o índice, destacam-se as tendências de aumento de nitrato em todas as estações analisadas. De maneira geral, os resultados mostraram que a qualidade da água na área de estudo varia em função da erosão do solo, do alto grau de contaminação por efluentes domésticos, da poluição difusa advinda das áreas agrícolas e dos metais pesados, sendo as variáveis de qualidade da água vinculadas a estes fatores as mais importantes. Surface water quality assessment in the hydrographic region of the Piranga River using multivariate and non-parametric statistical analysis ABSTRACTIn the state of Minas Gerais, campaigns to collect and analyze water quality in water bodies include up to 51 variables, which makes it difficult to analyze and interpret this data set and to identify the determining variables for water quality. Therefore, the objective of this work was to identify the main sources of pollution, as well as the behavior of water quality over the monitoring time, through different statistical analyzes in the hydrographic region of the Piranga River. Based on the results obtained, the factor analysis/principal component analysis out the high susceptibility that the hydrographic region presents to soil erosion, contamination by the release of domestic effluents and the variability of water quality due to heavy metals. The variables Escherichia coli, dissolved iron, total phosphorus and total manganese presented the most critical values of violation of the framework class. The trend analysis showed different patterns for the water quality index and for the most relevant variables for water quality. Among the variables that make up the index, the trends of nitrate increase in all analyzed stations stand out. In general, the results showed that the water quality in the unit varies depending on soil erosion, the high degree of contamination by domestic effluents, the diffuse pollution from agricultural areas and heavy metals, with water quality variables being linked to these factors the most important.Keywords: environmental analysis, Minas Gerais, water pollution, water resources.

scholarly journals Development of a New Predictive index (Bathing Water Quality Index, BWQI) Based on Escherichia coli Physiological States for Bathing Waters Monitoring

2021 ◽  
Vol 9 (2) ◽  
pp. 120
Author(s):  
Simone Bonamano ◽  
Alice Madonia ◽  
Gabriella Caruso ◽  
Giuseppe Zappalà ◽  
Marco Marcelli
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Fluorescent Antibody ◽  
Predictive Tool ◽  
E Coli ◽  
Bathing Water ◽  
Bathing Waters ◽  
Bathing Water Quality

Bacterial pathogens in coastal aquatic ecosystems pose a potential public health hazard for bathing water use. The European Bathing Water Directive (2006/7/EC) currently relies on the culturability of fecal pollution bacterial indicators such as Escherichia coli, without considering dormant or quiescent (Viable But Not Culturable, VBNC) cells, whose possible resuscitation after bathers ingestion cannot be excluded. Standard methods are also time-consuming and therefore hardly meet early warning needs of marine monitoring. To solve this issue, a new index, the Bathing Water Quality Index (BWQI), has here been developed, allowing to identify the most favorable coastal zones for recreational use. The index was calculated by combining numerical simulations of living and dormant E. coli abundances and their residence times. To specifically set up the model with the different physiological states of the whole E. coli population, an ad hoc experiment based on the fluorescent antibody method was performed. The BWQI application to Santa Marinella bathing area highlights a potential risk for human health in the zone most frequented by bathers. This study provides a predictive tool to support preventive decisions of the competent authorities and to properly protect bathers’ health, stressing the need for improved methods for environmental monitoring.

scholarly journals Assay of Potability with Bottled Mineral Water from Trademarks

2019 ◽  
Vol 2 (4) ◽  
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Physicochemical Parameters ◽  
Mineral Water ◽  
Nitrate Nitrogen ◽  
Human Consumption ◽  
Microbiological Analysis ◽  
Microbiological Parameters ◽  
Confirmatory Tests ◽  
Bottled Mineral Water

The purpose of this test was to evaluate the physicochemical (ammoniacal nitrate, nitrogen nitrate, nitrogen nitrite, pH, orthophosphate and turbidity) and microbiological parameters (Escherichia coli and total coliforms) of mineral water samples bottled trademarks and compare the results obtained with Brasilian Ministery of Healty Ordinance 2.914/11. For this purpose, it was used trademarks mineral water bottled sold in pet 300 and 500 ml bottles. For microbiological analysis it was used Colipaper (Alfakit®), and all of them the analysis of physicochemical parameters was used Ecokit II (Alfakit®). From the five mineral water bottled samples, all were within the physicochemical parameters determined by Ordinance 2.914/11. In the microbiological findings, only one sample presented Escherichia coli. Therefore, all the analyzed brands meet the required physicochemical parameters of water quality for human consumption, except brand A, which did not meet the microbiological parameters. The results demonstrates the need for confirmatory tests performed by laboratories qualified to attest the result obtained, as well as the need to implement more effective monitoring by the responsible agency for monitoring the water quality for human consumption.

scholarly journals Water quality in individual groundwater supply systems in Southern Brazil

2021 ◽  
Vol 43 ◽  
pp. e65
Author(s):  
Silvana Isabel Schneider ◽  
Jaqueline Ineu Golombieski ◽  
Debora Seben ◽  
Kananda Cabral Menegazzo ◽  
Arci Dirceu Wastowski ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Total Iron ◽  
Total Alkalinity ◽  
World Health ◽  
Total Hardness ◽  
Human Consumption ◽  
Total Coliforms ◽  
Groundwater Supply ◽  
Sampling Points

This study aimed to evaluate the potability of drinking water in ten municipalities of Rio Grande do Sul State, Brazil, distributed in rural and urban areas, with three different sources: springs, shallow wells, and deep wells. The water quality parameters analyzed from 2017 to 2019 were: pH, temperature, apparent and true color, turbidity, electrical conductivity, total alkalinity, total hardness, nitrate, total phosphorus, total iron, fluoride, biochemical oxygen demand, total coliforms, and Escherichia coli. A macroscopic analysis was also conducted in the surrounding of sampling points. According to the Brazilian and the WHO (World Health Organization) guidelines, some of the analyzed variables, in some sampling points, were in disagreement with the current both guidelines, which are pH, apparent color, turbidity, total iron, total coliforms, and Escherichia coli. The surveillance showed that the deeper the water is abstracted the less are natural and anthropogenic interferences in physical, chemical, and microbiological characteristics of the water; and the protection of the location where the water is abstracted improves its quality. Nonetheless, for the sampled waters it is necessary a disinfection process for posterior human consumption.

scholarly journals Geoecological research of water bodies of the Central Federal District of different recreational availability

2020 ◽  
Vol 163 ◽  
pp. 03001
Author(s):  
Ekaterina Chekmareva
Keyword(s):  
Water Quality ◽  
Coastal Zone ◽  
Skin Diseases ◽  
Federal District ◽  
Water Quality Assessment ◽  
Water Area ◽  
Water Bodies ◽  
Microbiological Analysis ◽  
Central Federal District ◽  
High Level

The results of geoecological research on water bodies of the Central Federal District of Russia are presented. Recreational availability of water bodies determines the level of access to water bodies and the coastal zone and their use for recreational activities by several geoecological characteristics and indicators. The studies included water sampling for chemical, microbiological analysis, and water quality assessment of water bodies and watercourses in the Central Federal District. Databases of morphometric and hydrological characteristics of water bodies have been compiled, access to the coastal zone and water area of reservoirs has been assessed. The recreational potential of water bodies is calculated based on the load on the generally accessible coastal zone, it is specified by natural and cartographic data. It was found that most water bodies have a ban on recreational water use. This is due to poor water quality in chemical and microbiological terms. Most water bodies are insufficiently surveyed and do not have equipped areas for recreational use. Recreation areas are located locally, the water bodies banks are heavily loaded in the summer. This leads to the degradation of the vegetation cover, contamination and re-compaction of the soil, the emergence of unauthorized dumps, increased pressure on the water body areas, the risk of spreading infectious and skin diseases. Access to the coastal zone of water bodies and watercourses in the Moscow Region and adjacent regions is also a problem. This is due to the high level of construction of building near large reservoirs, rivers, and lakes.

scholarly journals Qualitative characteristics of water resulting from the introduction of Eucalyptus silviculture in Pampa biome, RS

RBRH ◽  
2016 ◽  
Vol 21 (3) ◽  
pp. 636-645 ◽  
Author(s):  
Jussara Cabral Cruz ◽  
Mirian Lago Valente ◽  
Carine Baggiotto ◽  
Edner Baumhardt
Keyword(s):  
Escherichia Coli ◽  
Water Quality ◽  
Land Use ◽  
Surface Water Quality ◽  
Livestock Farming ◽  
Total Coliforms ◽  
Pampa Biome ◽  
Paired Watersheds ◽  
Natural Grassland

ABSTRACT This study aimed to present the effect on surface water quality of the introduction of eucalyptus forestry in areas that were traditionally used for extensive cattle farming in the Pampa biome, by comparing two paired watersheds located in the municipality of Rosário do Sul, one of them used for forestry and the other in an anthropized natural grassland condition in the Pampa biome. For this purpose, every fifteen days the following parameters were collected and analyzed in two watersheds with different land uses (watershed with grassland and extensive livestock farming – GW and watershed with Eucalyptus - EW) between the months of August 2011 and August 2012: pH, EC, temperature, turbidity and concentrations of SO42-, K+, Ca2+, Mg2+, Cl-, BOD5,20, SS, DS, alkalinity, total coliforms and Escherichia coli. Water quality and land use parameters averages were compared using the t-Test to account for the land use and seasonality. It was concluded that the introduction of forestry activity together with the areas of environmental protection required by the Brazilian legislation (Permanent Preservation Areas - PPA plus Legal Reserve - LR), contributed to the increased concentrations of conductivity, dissolved solids, alkalinity and calcium, and the decreased concentrations of total coliforms and Escherichia coli.

scholarly journals AVALIAÇÃO DA QUALIDADE MICROBIOLÓGICA DO GENGIBRE IN NATURA COMERCIALIZADO NA REGIÃO METROPOLITANA DE CURITIBA, PR

2004 ◽  
Vol 5 (2) ◽  
Author(s):  
Eliane Rose Serpe ELPO ◽  
Raquel Rejane Bonato NEGRELLE ◽  
Eliane Carneiro GOMES
Keyword(s):  
Escherichia Coli ◽  
Microbiological Quality ◽  
The Other ◽  
Most Probable Number ◽  
Microbiological Analysis ◽  
Probable Number ◽  
Total Coliforms ◽  
Other Hand ◽  
Post Harvesting

Analisou-se 10 amostras de gengibre “in natura” com objetivo de caracterizar o perfil microbiológico deste produto comercializado na região metropolitana de Curitiba, PR (Brasil). Para tanto, foram realizadas a determinação do número mais provável (NMP) de coliformes totais, coliformes a 45º C/g e Escherichia coli, e a presença de Salmonella sp em 25 gramas. Os resultados indicaram que 100% das amostras atenderam ao padrão da legislação vigente para Salmonella sp, enquanto que 30% das amostras de gengibre enquadradas como raízes, tubérculos e similares, e cerca de 50% das amostras como especiarias, temperos, condimentos e similares apresentaram coliformes a 45º C/g. Destas amostras analisadas, 20% confirmaram a presença de Escherichia coli. Observou-se que todas as amostras mostraram elevados índices de coliformes totais, apesar de não haver limite máximo estabelecido pela legislação vigente. Os resultados obtidos podem ser indicativos de inadequações nos procedimentos de beneficiamento pós-colheita e de comercialização. Abstract Ten samples of natural ginger, commercialized in Curitiba, Paraná (Brazil), were analyzed for microbiological quality. The microbiological analysis measured the total coliforms, 45° C/g coliforms, the most probable number (MPN) of Escherichia coli and the presence of Salmonella sp. The results revealed that 100% of the samples complied with the required standard for the absence of Salmonella sp. On the other hand, 30% - 50% had 45º C/g coliforms and 20% of them contained Escherichia coli. It was observed that all the samples had a high value for the total coliforms. This is important since the current legislation does not establish any limits. The results obtained may indicate inadequate procedures for post-harvesting and commercial handling.

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