Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10451/45176 |
Resumo: | The lack of access to safe drinking water causes important health problems, mainly in developing countries. In the West African country Guinea-Bissau, waterborne diseases are recognised by WHO as major infectious diseases. This study analysed the microbiological and physicochemical parameters of drinking water in the capital Bissau and its surroundings. Twenty-two sites belonging to different water sources (piped water, tubewells and shallow wells) were surveyed twice a day for three weeks, in both dry and wet seasons. Most of the microbiological parameters were out of the acceptable ranges in all types of water and both seasons and tended to worsen in the wet season. Moreover, in Bissau, the levels of faecal contamination in piped water increased from the holes to the consumer (tap/fountain). Several physicochemical variables showed values out of the internationally accepted ranges. Both well sources showed low-pH water (4.87-5.59), with high nitrite and iron levels in the wet season and high hexavalent chromium concentration in the dry season. The residual chlorine never reached the minimum recommended level in any of the water sources or seasons, suggesting a high risk of contamination. Results reveal a lack of quality in the three water sources analysed, coherent with the high number of diarrheal cases in the country. There is an urgent need to improve sanitarian conditions to reduce the disease burden caused by these waterborne illnesses. |
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Quality Assessment of Three Types of Drinking Water Sources in Guinea-BissauWest Africa; water quality; E. coli; physicochemical; microbiologicalQualidade da água de consumo humanoThe lack of access to safe drinking water causes important health problems, mainly in developing countries. In the West African country Guinea-Bissau, waterborne diseases are recognised by WHO as major infectious diseases. This study analysed the microbiological and physicochemical parameters of drinking water in the capital Bissau and its surroundings. Twenty-two sites belonging to different water sources (piped water, tubewells and shallow wells) were surveyed twice a day for three weeks, in both dry and wet seasons. Most of the microbiological parameters were out of the acceptable ranges in all types of water and both seasons and tended to worsen in the wet season. Moreover, in Bissau, the levels of faecal contamination in piped water increased from the holes to the consumer (tap/fountain). Several physicochemical variables showed values out of the internationally accepted ranges. Both well sources showed low-pH water (4.87-5.59), with high nitrite and iron levels in the wet season and high hexavalent chromium concentration in the dry season. The residual chlorine never reached the minimum recommended level in any of the water sources or seasons, suggesting a high risk of contamination. Results reveal a lack of quality in the three water sources analysed, coherent with the high number of diarrheal cases in the country. There is an urgent need to improve sanitarian conditions to reduce the disease burden caused by these waterborne illnesses.MDPIRepositório da Universidade de LisboaBancessi, AducabeCatarino, LuísJosé Silva, MariaFerreira, ArmindoDuarte, ElizabethNazareth, Teresa2020-12-09T12:07:13Z2020-10-042020-10-04T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/45176engAducabe Bancessi; Luís Catarino; Maria José Silva; Armindo Ferreira; Elizabeth Duarte; Teresa Nazareth. "Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau". International Journal of Environmental Research and Public Health 17 19 (2020): 7254-7254. https://doi.org/10.3390/ijerph17197254.10.3390/ijerph17197254info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T16:46:28Zoai:repositorio.ul.pt:10451/45176Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:57:30.724579Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau |
title |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau |
spellingShingle |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau Bancessi, Aducabe West Africa; water quality; E. coli; physicochemical; microbiological Qualidade da água de consumo humano |
title_short |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau |
title_full |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau |
title_fullStr |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau |
title_full_unstemmed |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau |
title_sort |
Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau |
author |
Bancessi, Aducabe |
author_facet |
Bancessi, Aducabe Catarino, Luís José Silva, Maria Ferreira, Armindo Duarte, Elizabeth Nazareth, Teresa |
author_role |
author |
author2 |
Catarino, Luís José Silva, Maria Ferreira, Armindo Duarte, Elizabeth Nazareth, Teresa |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Bancessi, Aducabe Catarino, Luís José Silva, Maria Ferreira, Armindo Duarte, Elizabeth Nazareth, Teresa |
dc.subject.por.fl_str_mv |
West Africa; water quality; E. coli; physicochemical; microbiological Qualidade da água de consumo humano |
topic |
West Africa; water quality; E. coli; physicochemical; microbiological Qualidade da água de consumo humano |
description |
The lack of access to safe drinking water causes important health problems, mainly in developing countries. In the West African country Guinea-Bissau, waterborne diseases are recognised by WHO as major infectious diseases. This study analysed the microbiological and physicochemical parameters of drinking water in the capital Bissau and its surroundings. Twenty-two sites belonging to different water sources (piped water, tubewells and shallow wells) were surveyed twice a day for three weeks, in both dry and wet seasons. Most of the microbiological parameters were out of the acceptable ranges in all types of water and both seasons and tended to worsen in the wet season. Moreover, in Bissau, the levels of faecal contamination in piped water increased from the holes to the consumer (tap/fountain). Several physicochemical variables showed values out of the internationally accepted ranges. Both well sources showed low-pH water (4.87-5.59), with high nitrite and iron levels in the wet season and high hexavalent chromium concentration in the dry season. The residual chlorine never reached the minimum recommended level in any of the water sources or seasons, suggesting a high risk of contamination. Results reveal a lack of quality in the three water sources analysed, coherent with the high number of diarrheal cases in the country. There is an urgent need to improve sanitarian conditions to reduce the disease burden caused by these waterborne illnesses. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-09T12:07:13Z 2020-10-04 2020-10-04T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10451/45176 |
url |
http://hdl.handle.net/10451/45176 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Aducabe Bancessi; Luís Catarino; Maria José Silva; Armindo Ferreira; Elizabeth Duarte; Teresa Nazareth. "Quality Assessment of Three Types of Drinking Water Sources in Guinea-Bissau". International Journal of Environmental Research and Public Health 17 19 (2020): 7254-7254. https://doi.org/10.3390/ijerph17197254. 10.3390/ijerph17197254 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799134518353854464 |