Showing 4 results for Drinking Water
Ma Hosseinpour Feizi , M Mosaferi , S Dastgiri , Sh Zolali , N Pouladi , P Azarfam ,
Volume 3, Issue 3 (2-2008)
Abstract
Background & Objectives: Arsenicosis is a serious environmental disease caused by chronic exposure to arsenic- usually from drinking water. Signs and symptoms of chronic arsenic poisoning include hyperkeratosis, hyper- or hypopigmentation, and ulcers. Also, the incidence of cancer is increased in the exposed population. There is some evidence of high arsenic levels in drinking water in the village of Ghopuz, located in Hashtrud District, East Azerbaijan province. We evaluated the genetic and health effects of chronic arsenic exposure in the residents of Ghopuz.
Methods: In this cross-sectional study we determined the prevalence of hyperkeratosis, hyperpigmentation and hypertension in Ghopuz village. The study involved 101 individuals in Ghopuz and 107 in the adjacent village of Mayan, who were all visited by a trained physician. A total of 46 blood samples were collected for kariotyping. The level of heavy metals in water was determined by the Inductively Coupled Plasma (ICP) method.
Results: We detected high arsenic levels in the drinking water at Ghopuz (mean concentration in water = 1.03 mg/L). There were chromosomal defects in the exposed group. Mean systolic blood pressure at Ghopuz (137mmHg, 95% CI: 132-142) was significantly higher than in Mayan (107, 95% CI: 99.9-114). Also, mean diastolic blood pressure at Ghopuz (82, 95% CI: 79-85) was significantly higher than in Mayan (71, 95% CI: 66-75). Hyperkeratosis was 34 times more frequent in the exposed population (OR = 34, P< 0.001). Also, hyperpigmentation was significantly more frequent in the exposed population (OR = 2.4, P < 0.007).
Conclusions: Water arsenic and nitrate levels at Ghopuz were higher than the maximum permissible levels. The prevalence of skin lesions and hypertension is increased at Ghopuz village due to arsenic exposure. There is also some evidence of chromosomal defects in the exposed group. Affected people need appropriate medical care, and safe drinking water should be provided to reduce arsenic exposure.
Mr Mohebbi, M Yunesian, K Nadafi, R ,
Volume 4, Issue 2 (9-2008)
Abstract
Background and objectives: The scattered state of villages both from their geographic aspect and the distance between residential units within a single village has made the task of supply, distribution and monitoring the quality of water a difficult one. Ideas of experienced people in the field of rural water quality control, has been obtained to reach gain a view on existing difficulties in supplying safe water to villages and the ways to overcome them.
Methods: Using a three-iteration Delphi procedure, consensus was built and measured among eleven managers and experts of rural water quality control. Given the large number of opinions and views ,the problems were discussed and were given priority according to the alphabetical order of the names of the participants.
Results: The difficulties were summarized as of being, the main source of water supply, economic, human resources , facilities, cultural and extra organization issues.
Conclusion: The cooperation rate was 100% in this study and most of the problems were concerning no credible financial support in supplying of costs for the maintenance facilities, upkeep of networks and the incorrect choice made in selecting of the water resource. We can overcome to these problems by implementing reforms, teaching, retraining, constant supervision and efficient management of the working staff , supervision of special operations projects including mending of breaks in pipelines and thus could lead to a more efficient distribution to the villages on time.
H Amiri, Sh Salmanzadeh, F Safdari, A Shirali, E Azhdarinia, Kh Sarmadi, Sa Alavi, H Salehi, M Eskandari,
Volume 16, Issue 4 (3-2021)
Abstract
Background and Objectives: In June 2018 , 537 residents of a rural area in Khuzestan Province presented to the regional Comprehensive Health Service Center for gastroenteritis symptoms. This study was designed to determine the extent and cause of the outbreak.
Methods: A case-control study was performed after random selection of the case and control groups (80 cases and 88 controls). Clinical and water samples were analyzed for parasitic, bacterial and viral pathogens in local, provincial and national laboratories. Odds ratios with corresponding 95% confidence intervals were used to assess the relationship between disease and exposure.
Results: The odds ratio of rural plumbing water consumption as a risk factor was 3.3 (95% CI: 1.7-6.2). Using in vitro methods, Shigella sonnei was isolated in clinical samples and enterohemorrhagic Escherichia coli and enteropathogenic Escherichia coli were isolated from both clinical samples and water samples taken from the intake basin of water supply facilities.
Conclusion: Consumption of rural plumbing water Since 26 June 2018 as well as the water stored in domestic tanks at certain water-shut-off times is associated with gastroenteritis outbreak. To prevent similar outbreaks, continuous chlorination of drinking water during distribution through rural pipelines should be done. To prevent secondary outbreaks after the epidemic phase, educating and informing people about personal hygiene is essential.
Zahra Hamidi, Mehdi Ranjbaran, Fateme Qotbi Nia, Akram Bahojb, Hamid Karyab,
Volume 18, Issue 3 (12-2022)
Abstract
Background and Objectives: Chromium is a heavy metal that toxic to humans in small concentrations. This study aimed to evaluate the cancer risk of exposure to chromium in drinking water in rural areas of Qazvin province.
Methods: Water sampling was performed according to the standard methods for water and wastewater examination and chromium analysis was performed with ICP-OES. Exposure factors were determined using a validated questionnaire. Finally, the risk assessment of oral and dermal exposure to chromium was performed using the risk assessment technique. Monte Carlo simulation was also used to determine the uncertainty caused by point risk estimation.
Results: The mean concentration of chromium in drinking water was 2.8±5.04 μg/l. The excess lifetime cancer estimated by the Monte Carlo simulation was 30.8 cases per 100,000 in the studied population, indicating 100 cases of cancer in the population living in rural areas of the Qazvin province.
Conclusion: Based on the obtained results, it can be concluded that although the concentration of chromium was lower than the maximum allowed in the national standard (0.05 mg/l), the risk of carcinogenesis was higher than the acceptable risk level of WHO (1 case per 100,000). Also, using the results obtained from the Monte Carlo simulation instead of point estimation provides higher confidence in risk management decisions.
