Dami, H.K.Ayuba, H.K.Amukali, O.2023-12-142023-12-142012-01-091. Akan, J.C. (2006); Determination of pollutant levels in some surface and water wastes samples from Kano metropolis, Nigeria. An M.Sc. Dissertation. University of Maiduguri, Maiduguri. 88p. 2. Amukali, O (2012): Assessment of water pollution in Ndokwa-East Local Government area, Delta State, Nigeria. An M. Sc. Dissertation, University of Maiduguri 3. Bhatia, (2009) Water Pollution in Chemical Industries. John Welsh Publications, India. 658p. 4. CIA (2008): CIA-World fact Book: United Kingdom available online at http://www.cia.gov/library/ publications/the-world-factbook/print/uk.litml 5. Dublin-Green, C.O., Awobamise, A. and Ajao, E.A. (1997): Large marine ecosystem project for the Gulf of Guinea.:Coastal profile of Nigeria. Nigerian Institute of Oceanography. 36p.https://keffi.nsuk.edu.ng/handle/20.500.14448/4695This paper evaluates the effects of gas flaring and oil spillage on rainwater quality for domestic use in Okpai and Beneku areas of Delta State, Nigeria. Both field and laboratory techniques were employed in the analyses of rainwater quality. Rain water samples were collected in the dry (December, January and February) and wet (June, July and August) seasons from Okpai (experimental site) and Benekuku (controlled site). The water samples were analyzed for chemical, physical and biological parameters using the methods of Radojevic and Bashkin, 1976; USEPA ,2007; and Kolo, 2007.The results showed that gas flaring and oil spillage have significantly changed some physic-chemical and biological properties of drinking water in the study area. For instance, there were changes in the taste, color, temperature, conductivity, alkalinity and total dissolved salts. These could have serious health implications on the ihabitants of the area. Apart from these, other parameters analyzed corresponded to the approved maximum permissible limits for drinking water set by NAFDAC, USEPA and WHO.enGas flaring, Oil spillage, Pollution, Rain water qualityArticle