Submit Manuscript | http://medcraveonline.com Introduction Water is an essential resource to biodiversity largely because all organism depend on water for survival and sustenance. As documented in literature, the quality of river water plays a vital role to the relative public health and sustenance of any given community or ecosystem. 1 For instance, anthropogenic activities have the tendency to release toxic organic and inorganic leachates from waste stream which are transported by urban runoff to contaminate water bodies. 2,3 Persistent inflow of waste stream from urban runoffs have largely affected the ambient water quality of aligning water bodies. It has been observed that in some communities of most developing countries surface water still serve as a means for waste disposal, especially in riverine communities. 3 Persistent anthropogenic activities over a period of time may influence the contamination rate. The contamination of water bodies from leachates of urban runoff due to unregulated and illicit dumping of unsegregated and untreated treated waste stream have been reported by several authors. 1–6 Some of the envisaged adverse of such contaminated runoff water on such water bodies includes but not limited to; nutrient enrichment, deterioration of the water qualities, and destruction of spawning grounds for aquatic and marine life, general fish kill. 2 Furthermore, the quality of any water body is largely dependent on its intended purpose. Even the spread of water-borne diseases like typhoid, cholera, diarrhoea from contaminated water have been documented in literature by several. 1,7–9 Consequent upon the environmental hazards associated with organic and inorganic leachates of waste streams associated with urban runoff and its toxicity to the ecosystem; it has become necessary to investigate the potential hazards associated with urban runoffs. Materials and methods Study area Yenagoa metropolis is the capital city of Bayelsa state of Nigeria, which is located on the southernmost part of Nigeria. It is a wetland consist of several network of creeklets which is linked to a major parent creek called Epie creek. The study area is a tropical humid hot climate with two prevailing seasons, being wet and dry seasons. The wet season which ranges from April to October is relatively cool and rainy, while dry season which is relatively hot and dusty ranges from November to March. 1 Sampling The sampling points are randomly selected dumpsites within the metropolis and the central dumpsite located on the outskirt of the metropolis. A total of 6 creeklet water samples (control inclusive), were collected in triplicates from 5 creeklets (Amarata, Okutukutu, Etegwe, Akenpai, Agudama), and one control station outside the metropolis. Samples for physicochemistry were monitored insitu, while samples for microbiological analysis were packaged in sterile Mc-cathney bottles and transported to the laboratory in ice pack. Techniques for physicochemical analysis Physicochemical parameters like; pH and Total dissolved Solid (TDS) were measured insitu using portable digital multi-probe meter (EXTECH-DO700). In the same vein, Salinity and conductivity were measured insitu using EXTECH-EC400 multi-probe meter, while turbidity and Total Suspended Solid (TSS) were assessed with the EXTECH-TB400 Turbidity meter and Envco-1500 TSS Meter respectively. MOJ Toxicol. 2018;4(4):299‒302. 299 © 2018 Seiyaboh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and build upon your work non-commercially. Physicochemical and microbial assessment of some creeklets associated with urban runoff in yenagoa metropolis Volume 4 Issue 4 - 2018 Enetimi I Seiyaboh, Tariwari CN Angaye Department of Biological Science, Faculty of Science, Niger Delta University, Nigeria Correspondence: Tariwari CN Angaye, Department of Biological Science, Faculty of Science, Niger Delta University, Wilberforce Island, Bayelsa State, Nigeria, Email maktarry@yahoo.com Received: July 30, 2018 | Published: August 23, 2018 Abstract 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. Keywords: niger delta, Creeklet, microorganisms, physicochemistry, urban runoff MOJ Toxicology Research Article Open Access