Environmental impact on the bacteriological quality of domestic water supplies in Lagos, Nigeria
OBJECTIVE: To assess the impact of town planning, infrastructure, sanitation and rainfall on the bacteriological quality of domestic water supplies. METHODS: Water samples obtained from deep and shallow wells, boreholes and public taps were cultured to determine the most probable number of Escherich...
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Universidade de São Paulo
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| Series: | Revista de Saúde Pública |
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| Online Access: | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0034-89102002000400019&lng=en&tlng=en |
| _version_ | 1819133247564546048 |
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| author | L Egwari O O Aboaba |
| author_facet | L Egwari O O Aboaba |
| author_sort | L Egwari |
| collection | DOAJ |
| description | OBJECTIVE: To assess the impact of town planning, infrastructure, sanitation and rainfall on the bacteriological quality of domestic water supplies. METHODS: Water samples obtained from deep and shallow wells, boreholes and public taps were cultured to determine the most probable number of Escherichia coli and total coliform using the multiple tube technique. Presence of enteric pathogens was detected using selective and differential media. Samples were collected during both periods of heavy and low rainfall and from municipalities that are unique with respect to infrastructure planning, town planning and sanitation. RESULTS: Contamination of treated and pipe distributed water was related with distance of the collection point from a utility station. Faults in pipelines increased the rate of contamination (p<0.5) and this occurred mostly in densely populated areas with dilapidated infrastructure. Wastewater from drains was the main source of contamination of pipe-borne water. Shallow wells were more contaminated than deep wells and boreholes and contamination was higher during period of heavy rainfall (p<0.05). E. coli and enteric pathogens were isolated from contaminated supplies. CONCLUSIONS: Poor town planning, dilapidated infrastructure and indiscriminate siting of wells and boreholes contributed to the low bacteriological quality of domestic water supplies. Rainfall accentuated the impact. |
| first_indexed | 2024-12-22T09:44:16Z |
| format | Article |
| id | doaj.art-f6f4934257b54ac6bbc70bc95b84cbbe |
| institution | Directory Open Access Journal |
| issn | 0034-8910 1518-8787 |
| language | English |
| last_indexed | 2024-12-22T09:44:16Z |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Revista de Saúde Pública |
| spelling | doaj.art-f6f4934257b54ac6bbc70bc95b84cbbe2022-12-21T18:30:35ZengUniversidade de São PauloRevista de Saúde Pública0034-89101518-8787364513520S0034-89102002000400019Environmental impact on the bacteriological quality of domestic water supplies in Lagos, NigeriaL Egwari0O O Aboaba1University of LagosUniversity of LagosOBJECTIVE: To assess the impact of town planning, infrastructure, sanitation and rainfall on the bacteriological quality of domestic water supplies. METHODS: Water samples obtained from deep and shallow wells, boreholes and public taps were cultured to determine the most probable number of Escherichia coli and total coliform using the multiple tube technique. Presence of enteric pathogens was detected using selective and differential media. Samples were collected during both periods of heavy and low rainfall and from municipalities that are unique with respect to infrastructure planning, town planning and sanitation. RESULTS: Contamination of treated and pipe distributed water was related with distance of the collection point from a utility station. Faults in pipelines increased the rate of contamination (p<0.5) and this occurred mostly in densely populated areas with dilapidated infrastructure. Wastewater from drains was the main source of contamination of pipe-borne water. Shallow wells were more contaminated than deep wells and boreholes and contamination was higher during period of heavy rainfall (p<0.05). E. coli and enteric pathogens were isolated from contaminated supplies. CONCLUSIONS: Poor town planning, dilapidated infrastructure and indiscriminate siting of wells and boreholes contributed to the low bacteriological quality of domestic water supplies. Rainfall accentuated the impact.http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0034-89102002000400019&lng=en&tlng=enabastecimento de águaplanejamento de cidadesqualidade da águaescherichia colianálise da águaimpacto ambientalsaneamento básicochuvaspoluição da água |
| spellingShingle | L Egwari O O Aboaba Environmental impact on the bacteriological quality of domestic water supplies in Lagos, Nigeria Revista de Saúde Pública abastecimento de água planejamento de cidades qualidade da água escherichia coli análise da água impacto ambiental saneamento básico chuvas poluição da água |
| title | Environmental impact on the bacteriological quality of domestic water supplies in Lagos, Nigeria |
| title_full | Environmental impact on the bacteriological quality of domestic water supplies in Lagos, Nigeria |
| title_fullStr | Environmental impact on the bacteriological quality of domestic water supplies in Lagos, Nigeria |
| title_full_unstemmed | Environmental impact on the bacteriological quality of domestic water supplies in Lagos, Nigeria |
| title_short | Environmental impact on the bacteriological quality of domestic water supplies in Lagos, Nigeria |
| title_sort | environmental impact on the bacteriological quality of domestic water supplies in lagos nigeria |
| topic | abastecimento de água planejamento de cidades qualidade da água escherichia coli análise da água impacto ambiental saneamento básico chuvas poluição da água |
| url | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0034-89102002000400019&lng=en&tlng=en |
| work_keys_str_mv | AT legwari environmentalimpactonthebacteriologicalqualityofdomesticwatersuppliesinlagosnigeria AT ooaboaba environmentalimpactonthebacteriologicalqualityofdomesticwatersuppliesinlagosnigeria |