Effects of waste dumps on groundwater quality in Abeokuta and environs

The study area, Abeokuta and its environs, is located in Ogun State, south western Nigeria. It is defined by latitudes 07° 3.0´ to 7° 17.0'N and longitudes 003° 14.0' to 003° 28.0'E and falls within 1:100,000 Sheet 260 Abeokuta and covers an area of 625km2.\r\n\r\nThe objective of the project is to study the hydrogeological characteristics of the area and the impact of waste dumps on the water quality. \r\n\r\nThe area is predominantly underlain by rocks of the Basement Complex and partly by the Cretaceous Sedimentary rocks of the Dahomey Basin. The rocks encountered in order of abundance are migmatized biotite-garnet gneiss, red sand, biotite schist, biotite-garnet-gneiss, coarse porphyritic granite, porphyroblastic gneiss, biotite granite, pegmatite and quartz vein. \r\n\r\nThe physical, chemical and microbial analyses of water samples (surface and groundwater) showed high conductivity, high concentration of trace elements and the presence of pathogens (Esherichia coli) in nearly all the water samples that is within a range of 14 - 180 CFU/ml indicating anthropogenic influence on the groundwater quality. The water samples are all beyond the W.H.O. and S.O.N accepted drinking water standards for human consumption.\r\n\r\nRemediating measures such as provision of pipe-borne water, construction of central sewer system, enactment and enforcement of sanitary bye-laws and location of waste dumpsites are recommended to ameliorate the problems of groundwater pollution in the area. \r\n

Date (Publication): 2008

Presentation form: Digital document

Status: Completed

Point of contact

Organisation name	Individual name	Role
		Author
A&EG, NGSA		Publisher
A&EG, NGSA		Custodian
A&EG, NGSA		Point of contact
	Director, A&EG	Owner

Keywords

Geology, Groundwater contamination, Rock-water interaction, Water Level Elevation, Elemental Concentration.

Other constraints: Internal only

Denominator: 50000

Language: English

Topic category

Description: Nigeria, Ogun State, Abeokuta

Reference system identifier: 4326

Distribution format

Name	Version
.doc

OnLine resource

Protocol	Linkage	Name
		Effects of waste dumps on groundwater quality in Abeokuta and environs

Statement: Inserted in the reports are the following maps (1:50,000): Location map, Accessibility map, Drainage map, Geological map, and Wet & Dry Seasons Water Elevation Contour maps.