Evaluation of Drinking Water Pollution and Health Effects in Baghdad, Iraq ()
1. Introduction
Country background. Iraq is rich in natural and human resources and was a middle-income country in the 1970s. But years of conflict, sanctions and wars have had a significantly negative effect on Iraq’s economy with people suffering a severe decline in their standards of living. Although in the 1970s the health and educational institutions in Iraq were regarded as among the best in the Middle East, the current health and education indicators of Iraq are well below the regional average. An estimated 10 percent of the population has income of less than a dollar a day, and unemployment is estimated at 25 - 30 percent of the population. According to the United Nations, approximately 25 percent of the population is dependent on food rations. The agriculture sector has declined and is characterized by poor productivity and inefficient water use. Infrastructure in all sectors, including water and sanitation, is dilapidated and mostly dysfunctional. The current political and security environment remains unstable with negative impacts on basic services. Rebuilding the Iraqi economy and institutions remain a formidable challenge [1].
Environmental issues Iraq are also facing very serious environmental problems, including poor water quality, air pollution, waste management, contaminated sites and the deterioration of key ecosystems. With environmental problems neglected to a large extent prior to the war as well, the decades of war, conflicts and economic sanctions have further worsened the environmental conditions. The problems are aggravated by the country’s weak environmental governance structure.
Before the Gulf War, Iraq’s water supply system employed what was at the time up-to-date technology and functioned efficiently. However, with the imposition of economic sanctions, Iraq was unable to expand or update the system, resulting in extensive leaks throughout the network, and a steady decline in the volume and quality of water supply. This, combined with the growth of urban populations, has affected everyday life, with some areas receiving almost no water. Waterborne infectious diseases, which had been eradicated prior to sanctions, also spread again due to the impossibility of importing chlorine disinfectants [2].
2. Objectives
• Current status of Iraq’s environment and gather information on assistance initiatives in the environmental field being implemented.
• Evaluation of drinking water quality.
• Increased incidence of diseases will be attributable to degradation of normal preventive medicine, waste disposal and water purification/distribution.
3. Study Area
Iraq’s quality of drinking water and water used for agriculture is poor, violating both Iraq National Standards and WHO guidelines. Leaking sewage pipes and septic tanks contaminate the drinking water network with wastewater [3].
• Only 17% of wastewater is treated before discharged into the environment [4].
• 80% of Iraqis do not treat their water before drinking [5].
Water-borne diseases are widespread due to polluted drinking water supplies. In the first six months of 2010, there were over 360,000 diarrhea cases as a result of polluted drinking water and a lack of hygiene awareness among local communities, particularly vulnerable groups such as women and children [6].
Iraqi Ministry of Environment in 2009 indicate that bacteriological contamination in the water supply varies between governorates, ranging from 2.5% up to 30%, with the current average of 16% greatly exceeding the Iraqi National Drinking Water Standards and WHO Guidelines for Drinking Water permissible limit of 5% [7].
• Every day at least 250,000 tonnes of raw sewage is pumped into the Tigris River threatening unprotected water sources and the entire water distribution system [8].
• Consumers directly and illegally puncture the main water supply lines with their individual and unhygienic leaky plastic hoses causing direct and continuous contamination [9].
During the hot summer months, the specter of widespread cholera outbreaks loomed over the country. Cholera is characterized by profuse diarrhea, which can lead to severe dehydration and death if left untreated. The World Health Organization (WHO) reported a total of 73 laboratory-confirmed cholera cases in Iraq from April 28 to June 4, 2010. 10 times more than WHO officials found during the same period last year [10].
4. Data Procurement
Samples were collected from central and outskirts of Baghdad for residual chlorine and bacteriology tests for the years 2007. The data of permissible quality of supplied water in ten cities, located in central Baghdad, also available. The health data containing the number of cases of various diseases for all the months of the year 2007 in Rusafa and Karakh districts this data showing us number and type of water born diseases in Baghdad.
5. Results
Table 1 present the design capacities, actual production and the capacity utilization in respect of different water treatment plants. It may be observed that other than 2 plants viz. Al Qarama and Sharaq Dijla, all other plants are operating at much lesser capacities, which need to be augmented for better performance.
Water samples were collected from central and outskirts of Baghdad and were made to undergo chlorine
Table 1. Capacity of WTP’s in centre Baghdad.
and bacteriology tests. The test results indicated that the water quality in the cities located in the outskirts of Baghdad is in a very erratic state. This is due to the insecure war conditions that make these areas inaccessible. Also the absence of wastewater treatment plants in these areas made the conditions worse as the waste is directly thrown in the river. The chlorine and bacteriology test results are shown in Figures 1 and 2 respectively.
Table 2 and Table 3 show that more number of water borne diseases cases was reported in Rusafa district as compared to the Karkh district. This is due to more pollution in water networks in the Rusafa area.