Paper Title
Assessment Of Lead (PB) Level In Water From Watershed Of The Kowsar Dam
Abstract
Natural water quality varies markedly and is affected by the geology, biology, and hydro climatic characteristics
of an area. The availability of water and its physical, chemical, and biological composition affect the ability of aquatic
environments to sustain healthy ecosystems: as water quality and quantity are eroded, organisms suffer and ecosystem
services may be lost The Kowsar dam supply water for different usages such as drinking, industrial, agricultural and
aquaculture farms usages and located next to the city of Dehdashat in Kohgiluye and Boyerahmad province in southern
Iran. There are some towns and villages on the Kowsar dam watersheds, which Dehdasht and Choram are the most
important and populated cities in this area. The study was undertaken to assess the status of water quality in the urban
areas of the Kowsar dam. A total of 28 water samples were collected from 6 stations on surface water and 1 station from
groundwater on the watershed of the Kowsar dam. All the samples were analyzed for Pb concentration using standard
procedures. The results were compared with other national and international standards. Among the analyzed samples, as
the maximum value of lead (0.04 mg/L) was observed on the station 1 at the spring 2010, all the samples analyzed were
within the maximum admissible limits by the United States Environmental Protection Agency, EU, WHO, Iranian and the
Indian standards. In general results of the present study have shown that a Pb mean value of station No. 1 with 0.016
mg/L is higher than the other stations. Pb level of all samples and stations are far from drinking water standards and this is
an indication of pollution potential and hazards because of human activity and waste water of towns in the areas, which
can effect on human health implications in future. This research, therefore, recommends the government and other
responsible authorities to take suitable improving measures in the Kowsar dam watersheds.
Keywords- Kowsar Dam, Drinking Water Quality, Lead, Maximum Admissible Limit, World Health Organization,