The most often polluted phases of the environmental are the aquatic system, especially the surface water. This is because contaminants in air, soil or on land ultimately end up in the aquatic systems via local precipitation, water surface runoff and leaching of rocks and solid wastes (Forstner and Wiltman, 1983). Sewage, industrial wastes and agricultural chemicals such as fertilizers and pesticides, mineral and petroleum exploration and exploitation are however, the main causes of surface water pollution (Yong, 1999). The activity of trace metals in aquatic systems and their impact on life vary depending upon the metal species. Of major importance in this regard is the ability of metals to associate with other

The present study aims to evaluate the potential ecological risk (PERI), pollution load index (PLI) and Geo-Accumulation Index (Igeo) of soil pollution by heavy metal around the solid waste dumpsites in Warri and Environs. The concentrations of Pb, Cu, Ni, Cr Zn, Cd, Fe and Mn were monitored using atomic absorption spectrophotometer (Unican 929) for 12 months in the selected dumpsites. The spatial variation of Pb, Ni, Cr and Zn showed no significant difference across the sampling location when subjected to one-way ANOVA while evaluation of PLI reviled a value of less than one in all the sample location which indicates no pollution. PERI was evaluated with a value of ER < 30 across the sampling locations which indicates slight pollution and Igeo result showed that the soil at all the study areas are practically uncontaminated by heavy metal. The concentrations of heavy metals in the soil within the vicinities of the dumpsites were within the DPR (2002) stipulated levels. These findings suggested some managerial strategies to avoid escalation of soil contamination by heavy metal at the selected dumpsite and other similar areas elsewhere.

Environmental noise pollution affects not only the quality of life, but it poses a serious health and social problem. The Cirrus integrating averaging sound level instrument: model CR262A was employed to determine the noise levels at the twenty-two (22) selected sampling stations. The measurement of the noise was carried out during the morning, afternoon, and evening periods, to evaluate noise pollution within the twin city.Results indicated that there is no much difference (p>0.05) in the mean noise values within the different periods of the day at each sampling station, but there is significant variation (p<0.05) in the mean noise values at each period of the day over all the sampling stations. The results of the noise measurement showed that Enerhen Junction and NNPC Complex recorded the highest and lowest overall noise values of 84.84+5.39 dB(A) and 70 .90+2.98 dB(A) respectively. The results of this survey showed that the noise values at all the measurements points within Warri and Effurun metropolitan cities and at all the periods of the day is more than the Nigeria Federal Ministry of Environment (NFMEnv) and World Health Organization (WHO) permissible limit of 55dB daily noise level criteria for residential areas. The ssurvey requires the need to enact and enforce permissible noise levels/standards for residential neighbourhoods of 55dB by relevant environmental authorities both at Federal and state levels instead of applying 90dB standard meant for regulations in industrial settings.