The health problems posed by Particulate Matter (PM) cannot be overemphasized. This research focused on the assessment and health risk of particulate matter of playgrounds within traffic congested area of Yenagoa Metropolis Nigeria. Levels of PM, metrological indicators and traffic count were measured at 7 locations (including a control station) using AEROCET 513 Portable Meter (Metone instrument). The PM value were determined for; PM 1.0 (12.33-23.33µg/m 3), PM 2.5 (17.00-31.67µg/m 3), PM 4.0 (30.33-49.67µg/m 3), PM 7.0 (35.33-70.33µg/m 3) PM 10 (51.00-108.00µg/m 3), and Total Suspended Particulate Matter (TSP) ranging from 135.00-246.67µg/m 3. The control site indicated the lowest concentration of particulate matter (p<0.05), with no traffic count per minute. Moreover, the playgrounds that indicated the highest level of particulate matter similarly had the highest traffic count. Traffic count increased with corresponding increase in particulate matter level (p<0.05). This study, therefore, concludes that the emission of the playground is a reflection of vehicular traffic, dust scrub influenced by anthropogenic and meteorological factor.

Urban runoff have become a major source of surface and ground water pollution in most developing nations, where municipal waste streams are uncharacterized or segregated. Bayelsa state, is a wetland located in the Southernmost and Central part of Niger Delta, in Nigeria. This study evaluated the physicochemical and Microbial quality of recipient creeklets of urban runoff in Yenagoa Metropolis, being the Capital city of Bayelsa state. Water samples were collected from 6 randomly selected creeklets, and analyzed following standard protocol. Results of physicochemical parameters were reported as; temperature (27.96±0.30-29.01±0.27 o C), pH (6.60±0.52-6.81±0.56), Dissolved oxygen (3.80±0.48-8.90±0.27mg/l), Turbidity (17.94±0.05-31.97±0.83 NTU), conductivity (67.67±0.13-55.31±0.42μS/cm), and Total dissolved solid (TDS), ranging from 51.20±0.66-111.50±0.29mg/l (P<0.05). While the levels of nitrite range from 1.45±0.03-3.94±0.53 mg/l, Total heterotrophic bacteria and fungi were 0.65±0.11-1.35±0.71X10 6 and 0.46±0.33-0.77±0.62X10 4 Cfu/ml respectively. Furthermore, the total and feacal coliforms were 161.18±9.30-256.14±4.90 and 81.15±9.90-169.11±3.71 MPN/100ml respectively. The results generally indicated significant levels of contamination of the creeklet due to anthropogenic activities. As such, Government, NGOs and all stakeholders should formulate mitigable measures to check anthropogenic activities.