PHYSICO-CHEMICAL DIAGNOSIS OF WATER QUALITY IN THE MIRASSOL STREAM, CITY OF SÃO PAULO, BRAZIL

2021 ◽  
pp. 160-171
Author(s):  
André Contri Dionizio ◽  
Marta Ângela Marcondes ◽  
Raul Neiva Bertulucci
Keyword(s):  
Water Quality ◽  
Sao Paulo ◽  
São Paulo ◽  
Physico Chemical

scholarly journals The climatic rhythm and blooms of cyanobacteria in a tropical reservoir in São Paulo, Brazil

2014 ◽  
Vol 74 (1) ◽  
pp. 72-78 ◽  
Author(s):  
I Ogashawara ◽  
JA Zavattini ◽  
JG Tundisi
Keyword(s):  
Water Quality ◽  
Meteorological Data ◽  
Polar Front ◽  
Sao Paulo ◽  
Cyanobacterial Blooms ◽  
Metropolitan Region ◽  
Integrated Analysis ◽  
Limiting Factor ◽  
São Paulo ◽  
Tropical Reservoir

The present study sought to develop a methodology to analyse water quality based on the concepts and methods of climate and climatology. Accordingly, we attempted to relate hydro- and limnometeorological techniques and methodologies to a rhythmic analysis technique developed within the context of the Brazilian geographical climatology. Our goal was to assess and analyse cyanobacterial blooms, the main index of water quality for the reservoirs of the “Alto Tietê” Basin and, consequently, the Metropolitan Region of São Paulo, an area of high environmental complexity due to its high degree of development and high population density. The meteorological data used were collected by the Institute of Astronomy, Geophysics and Atmospheric Sciences at the University of São Paulo meteorological station, and the limnological data were collected through the Hydrological Monitoring System implemented by SABESP in the Billings and Guarapiranga Reservoirs and the laboratory of the same entity. The rhythmic and integrated analysis showed that the process of cyanobacterial blooms is dependent on a combination of meteorological factors as temperature and wind intensity that may disrupt the stability of the reservoir, providing the conditions necessary for the development of cyanobacteria during the stabilisation process. The pace of the Atlantic Polar Front Entrance during the winter in São Paulo is a limiting factor for the growth of cyanobacteria because of their high frequency, thus maintaining the balance of the reservoir throughout this period. The weather types those could cause a instability in the water column were: Cold Front entrance (66.67%), conflict between masses (22.22%) and the Tropical Instability Line (11.11%). The possibility for prevention and forecasting periods advise when these reservoirs should not be used, mainly with regard to recreational activities.

scholarly journals Water Quality Index (WQI) of Jaguari and Atibaia Rivers in the region of Paulínia, São Paulo, Brazil

2016 ◽  
Vol 188 (5) ◽  
Author(s):  
Marcio Antonio Gomes Ramos ◽  
Eduardo Schneider Bueno de Oliveira ◽  
Antonio Carlos Simões Pião ◽  
Dilza Aparecida Nalin de Oliveira Leite ◽  
Dejanira de Franceschi de Angelis
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Sao Paulo ◽  
São Paulo

Land use influence on raw surface water quality and treatment costs for drinking supply in São Paulo State (Brazil)

2016 ◽  
Vol 94 ◽  
pp. 516-524 ◽  
Author(s):  
Davi Gasparini Fernandes Cunha ◽  
Lyda Patricia Sabogal-Paz ◽  
Walter Kennedy Dodds
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Surface Water ◽  
Surface Water Quality ◽  
Sao Paulo ◽  
Treatment Costs ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

scholarly journals Effect of watershed land use on water quality: a case study in Córrego da Olaria Basin, São Paulo State, Brazil

2018 ◽  
Vol 78 (4) ◽  
pp. 625-635 ◽  
Author(s):  
M. B. L. Simedo ◽  
A. L. M. Martins ◽  
T. C. T. Pissarra ◽  
M. C. Lopes ◽  
R. C. A. Costa ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Surface Water ◽  
Water Quality Monitoring ◽  
Sao Paulo ◽  
Significant Shift ◽  
Sampling Point ◽  
São Paulo ◽  
Land Use Classification ◽  
Effects Of Land Use

Abstract The water quality is related to the hydrologic and limnologic properties of ground and surface water, and significant efforts have been made to monitor water sources to understand the effects of land use changes in agricultural areas, with significant socioeconomic activities. The objective of this study was to evaluate the qualitative aspects of surface water in subbasins related to land use. Samples were analyzed in terms of physical and chemical parameters on monthly discrete water quality sampling in four representative sites at first order subbasin streams, located at the Polo Regional Centro Norte, Pindorama County, State of São Paulo, Brazil. The land use classification was made by visual detection technique in a multispectral satellite data obtained from LandSat8- spectral bands of the OLI sensor. The watershed was classified into major land cover/use classes and overlay maps generated in ArcGIS 10 indicated a significant shift from natural vegetation to agriculture activities. Water quality monitoring was according to the brazilian protocol and the results were submitted to analysis of variance (ANOVA). The values obtained differ significantly at each sampling point - subbasins, reflecting the effects of land use on water quality. Soil conservation management is important to optimize soil use in order to contribute to the control of water pollution and the formulation of a public policy is necessary for the conservation of water and soil resources.

scholarly journals Economic evaluation of the impacts of water quality on fishery production in the Estuary Complex of Santos, São Vicente and Bertioga cities, in southeastern coast of Brazil

2020 ◽  
Vol 56 (1) ◽  
pp. 99-110
Author(s):  
Victor Carrozza Barcellini ◽  
Ângela Tavares Paes ◽  
Simone Georges El Khouri Miraglia
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Total Phosphorus ◽  
Linear Models ◽  
Quality Parameters ◽  
Sao Paulo ◽  
Water Quality Parameters ◽  
São Paulo ◽  
Fishing Activity ◽  
Monetary Loss

The present study proposes a diagnosis of water quality and fishery production in the Estuarine Complex of Santos, São Vicente, and Bertioga Cities as a requirement for economic valuation of water pollution impacts on fishing production. In the study period (2009–2014), three water quality parameters were identified (dissolved oxygen, total phosphorus, and nitrate), which occurred more frequently in non-conformity with Brazilian water standards, according to reports released by the Environmental Company of São Paulo State (Companhia Ambiental do Estado de São Paulo — CETESB). For data collection of fishery production, data from the monitoring of Institute of Fisheries of Santos City (Instituto de Pesca de Santos) were used, and 15 species were identified with higher occurrence in the study area. The relation between water quality parameters and fishery production was analyzed with mixed linear models, in which significant values for dissolved oxygen parameters, total phosphorus (positive relation), and nitrate (negative relation) were found. Environmental valuation considered only the direct use values (DUV) component of the valuation of fishery production variation in relation to water quality variation. For this purpose, the Marginal Productivity Method (MPM) of the dose-response function was used, which resulted in a range of monetary loss between US$ 24,760,550.22 and US$ 60,635,978.78. The obtained values represent only a portion of the valuation of economic and environmental loss in the fishing activity (part of DUV). Therefore, economic value calculated is conservative, and although it did not reached the total amount corresponding to all the impacts caused by poor water quality, given the limitations of methods and study period, the obtained values represent the minimum environmental monetary loss.

scholarly journals The contribution of the Guarulhos Municipality (São Paulo State) to the water quality of the Alto Tietê System

2017 ◽  
Vol 44 (1) ◽  
pp. 109 ◽  
Author(s):  
Reinaldo Romero VARGAS ◽  
João José Samarão GONÇALVES ◽  
Fabrício Bau DALMAS ◽  
Antonio Roberto SAAD ◽  
Regina De Oliveira Moraes ARRUDA ◽  
...  
Keyword(s):  
Water Quality ◽  
Sao Paulo ◽  
São Paulo ◽  
Paulo State ◽  
São Paulo State

A contribuição do município de Guarulhos (Estado de São Paulo) para a qualidade de água do Sistema Alto Tietê. Guarulhos (SP) tem apresentado índices de crescimento populacional acima da média da Região Metropolitana de São Paulo (RMSP). A Bacia Hidrográfica do Rio Baquirivu Guaçu (BHRBG), onde se localiza o Rio Baquirivu Guaçu, é o vetor de expansão urbana do município e da região. Este trabalho apresenta uma análise da qualidade das águas do Rio Baquirivu-Guaçu na entrada e na saída do município de Guarulhos, avaliando os efeitos da implantação das ETEs e do uso da terra sobre a qualidade das águas do Rio Baquirivu-Guaçu, entre os anos de 2010 e 2014. Para isto foram elaborados os mapas de uso de terra no período analisado, uma análise do funcionamento das ETEs na área de estudo, e a análise estatística dos Índices de Qualidade de Águas (IQA) e de seus parâmetros nos diferentes pontos do rio. Os dados referentes às análises físico-química e microbiológica do Rio Baquirivu-Guaçu indicam uma qualidade de água na saída do município de Guarulhos (IQA=16), muito inferior àquela que recebe do município de Arujá (IQA=32). Os valores médios, em especial para os parâmetros DBO, OD, TU, ST e CF indicam uma piora na qualidade das águas do Rio Baquirivu-Guaçu no ponto BQGU03850. Os valores dos parâmetros NT, PT e pH foram muito próximos para ambos os pontos da entrada e saída da bacia. A análise entre a evolução do uso da terra e a qualidade da água demonstra as consequências do processo inadequado de crescimento urbano na bacia e que as fontes poluidoras domésticas e industriais representam considerável risco à qualidade das águas, demonstrando que as obras de saneamento realizadas até o momento não foram eficazes na redução de cargas poluidoras das águas do rio Baquirivu-Guaçu.

scholarly journals Assessment of the water and sediments quality around the coastal submarine sewage outfall in Guarujá, São Paulo, Brazil

2021 ◽  
Vol 10 (12) ◽  
pp. e257101220389
Author(s):  
Vinicius Roveri ◽  
Luciana Lopes Guimarães ◽  
Walter Barrella ◽  
Alberto Teodorico Correia
Keyword(s):  
Water Quality ◽  
Marine Pollution ◽  
Complex Mixture ◽  
Test Organism ◽  
Sao Paulo ◽  
Environmental Indicators ◽  
São Paulo ◽  
Sewage Outfall ◽  
Threshold Effect Level ◽  
Canadian Council

The discharge of domestic sewage is one of the most common types of marine pollution, namely through submarine outfalls. In this study, water and sediments of the coastal submarine sewage outfall in Guarujá, São Paulo, Brazil were assessed during the high (January) and low (April) tourist seasons in 2018. The Canadian Council of Ministers of the Environmental Water Quality Index (CCMEWQI) showed a “marginal” water quality, in both seasons, where dissolved oxygen, biochemical oxygen demand, oil and greases, ammonia, surfactants, aluminium, lead, copper, nickel, Escherichia coli and Enterococci showed potential ecological risks. However, no mutagenic potential was detected in the complex mixture (Ames Salmonella/microsome test: MI<2), and no protozoa and Salmonella bacteria were found. In the sediment, a total of 25 benthic taxa were inventoried, suggesting that the macrofauna is not under contamination stress. Cadmium, lead, copper, chromium, nickel and zinc were below the Threshold Effect Level, and the Geoaccumulation Index was <0. Furthermore, the absence of acute toxicity to the test organism Kalliapseudes schubartii (EC50: 96h) and the Shannon-Wiener diversity index (H’: 2.5 to 3.5 bits/ind) suggests healthy or unpolluted environments. However, the deviation of some environmental indicators suggests the need of continuous monitoring based on field measurements.

scholarly journals URBAN SANITARY CONDITIONS AND BATHING WATER QUALITY OF THE ENSEADA AND SÃO LOURENÇO BEACHES, MUNICIPALITY OF BERTIOGA, SÃO PAULO (SE, BRAZIL) / CONSEQUÊNCIAS DAS CONDIÇÕES SANITÁRIAS URBANAS DAS PRAIAS DA ENSEADA E SÃO LOURENÇO, MUNICÍPIO DE BERTIOGA-SP, NA QUALIDADE DAS ÁGUAS DESTINADAS À BALNEABILIDADE

2018 ◽  
Vol 3 (3) ◽  
pp. 187-196
Author(s):  
Renata Aparecida Costa ◽  
Antonio Roberto Saad ◽  
Anderson Targino da Silva Ferreira ◽  
Maria Carolina Hernandez Ribeiro ◽  
Regina De Oliveira Moraes Arruda
Keyword(s):  
Water Quality ◽  
Coastal Zone ◽  
Sao Paulo ◽  
World Health ◽  
São Paulo ◽  
Sewage System ◽  
Bathing Water ◽  
Bathing Water Quality ◽  
Sanitary Conditions

Brazilian coastal zone comprises more than 8,000 km of extension, which together with the tropical climate, increase the interest of the coastal tourism in the coastal zone. Consequently, the demand for services in coastal cities, such as basic sanitation, is also increasing. In this way, the evaluation of the beach waters quality is of great relevance, since the contact with contaminated water can raise the exposure to pathogenic microorganisms and with this the transmission of waterborne diseases. The objective of this study was to evaluate the balneability of two beaches (Enseada and São Lourenço, municipality of Bertioga, São Paulo State, SP, Brazil) using sanitary conditions as indicators. The soil coverture and sanitary sewage system were related to the quality of the beach waters. For the analyzed period (2010 to 2016) a direct correlation (R = 0.58 and R = 0.46) was observed between the monitoring stations balneability using the criteria of the “Conselho Nacional do Meio Ambiente” (National Council of the Environment) CONAMA 274/2000 and the World Health Organization, respectively, and the index of the sanitary sewage system for the region, similarly, the coefficient of determination (R²) presented values of 0.34 and 0.21. The results of the applied methodology allowed a satisfactory evaluation of the water quality of selected beaches and suggested that the São Lourenço beach has a better sanitary sewage system and, consequently, a better bathing water quality and lower risks to the bathers health, while the Enseada Beach presented regular indices due to the lack of a sewage collection system in most of this settlement area. ResumoA zona costeira brasileira compreende mais de 8.000 km de extensão, que aliada ao clima tropical, aumentam o interesse pelo turismo no litoral. Consequentemente, também aumenta a sobrecarga nos serviços das cidades litorâneas, como o de saneamento básico. Dessa forma, a avaliação da qualidade das águas praiais é de grande relevância, pois o contato dos banhistas com águas contaminadas pode elevar a exposição a microrganismos patogênicos, e com isso a transmissão de doenças de veiculação hídrica. O objetivo deste estudo foi avaliar a balneabilidade de duas praias (Enseada e São Lourenço, município de Bertioga-SP, SE Brasil) utilizando-se as condições sanitárias como indicadores. Para isto, buscou-se relacionar a cobertura do solo e esgotamento sanitário com a qualidade das águas das praias. Para o período analisado (2010 a 2016), observou-se uma correlação direta (R = 0,58 e R = 0,46) entre a balneabilidade dos pontos de monitoramento (critérios da Resolução CONAMA 274/2000 e da Organização Mundial da Saúde, respectivamente) e o índice de esgotamento sanitário da região; de maneira semelhante, o coeficiente de determinação (R²) apresentou valores 0,34 e 0,21. Por fim, os resultados mostraram que a metodologia utilizada permitiu avaliar a balneabilidade das praias selecionadas de forma satisfatória. Assim, a praia de São Lourenço demonstrou melhores condições de esgotamento sanitário e, como consequência, melhor balneabilidade e menores riscos à saúde dos banhistas, enquanto que a Praia da Enseada apresentou índices regulares em decorrência da inexistência de rede coletora de esgoto na maior parte de sua área.

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