Open AccessTHE INFLUENCE OF URBAN LAND USE ON THE WATER QUALITY OF OTAMIRI RIVER FOR MUNICIPAL SUPPLY
Author(s) -
Onosakponome,
Ogaga Robert
Publication year - 2021
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2021.v06i02.029
Subject(s) - turbidity , environmental science , water quality , hydrology (agriculture) , environmental engineering , water supply , land use , sampling (signal processing) , water resource management , ecology , geotechnical engineering , engineering , biology , filter (signal processing) , computer science , computer vision
Water quality levels of OtamiriRiver was studied to seek explanations for thevariations of water quality indicators in the riverand also tried to evaluate the influence of urbanland use activities and season on the waterquality and to examine the water quality ofOtamiri River for agricultural and domesticuses. Water sampling and laboratory analyseswere carried out using standard procedures todetermine the concentrations of selectedparameters in the sample. The data obtainedranged from 21.10 to 98.00µS/cm for ElectricalConductivity, 9.70 to 45.10mg/l for TDS, 5.60 to20.80mg/l total hardness, 0.00 to 3.06mg/l NO3-,0.15 to 6.50mg/l PO4, 0.00 to 12.63mg/l SO42-,and 14.48 to 32.96mg/l Cl-. Other results rangedfrom 12.03 to 19.26mg/l BOD5, TSS 40.50 to1793.50mg/l, turbidity 7.86 to 96.40NTU and pH6.48 to 6.90 at 29?C. The data clearly show thatareas outside the influence of urban activitiesstill maintain their pristine environmentalconditions with water quality parameters fallingwithin permissible limits. The water from theseareas can sustain aquatic life and are safe forhuman consumption. However, the resultsfurther showed that the midstream area thatreceive wastes from urban land use activitieswas polluted with parameters such as NO3-, PO4-, Cl-, BOD5, TDS, and COD being higher thanthe permissible limit. This demonstrates theinfluence of urban land use on the water qualityof Otamiri River.