India, Feb. 8 -- For instance, the average concentration of lead recorded in the Wiwi and Subin rivers was 0.018-0.031 mg/l and 0.035-0.055, respectively

Ghana's urban population has more than tripled in the past three decades, from 4 million to nearly 14 million people. Competition for land in cities has increased among various land uses. These trends have led to encroachment in ecologically sensitive areas such as wetlands.

Kumasi , Ghana's second largest city, has a high level of encroachment and this has led to the pollution of water bodies. Kumasi's population growth has been rapid because of its central and strategic location and its functions as a major commercial, traditional and administrative centre. In 2022, the population of...