Abstract

Groundwater is an economic resource and more than 85% of the public water for consumption in Nigeria is obtained from groundwater. This source of water is of great use for domestic, industrial, and agricultural purposes. Groundwater in Abeokuta is largely derived from the aquifers within coastal plain. The water in this formation is however not always suitable due to urban waste disposal and sea water intrusion. Water samples from 1,712 wells, streams and boreholes within Abeokuta metropolis were sampled for chemical and physical parameters. Results showed low values of Total Dissolved Solids and Electrical Conductivity implying that samples tested largely fall in the category of fresh water. The conductivity values showed some level of impurity but at the level that may not pose serious health risk to human health.

Key words: Electrical conductivity, total dissolved solids, control chart, groundwater.