Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 36 4 2007 12 15 74 80 M Malakootian A Hasibi A Zeinadini 2015 10 03 Background: Rafsanjan -Noogh- Anar's plain (54°, 52′- 56°, 34′ longitudinally & 29°, 51′- 31°, 31′ latitudinally) is one of the Iran's plains located in sub- basin of Daranjir desert. Anar's plain is located at the lowest part of Rafsanjan -Noogh- Anar's plain. According to the geological and field studies of the area, the presence of west and east mounts and deposits re­sulting from evaporation in lower parts of the area are indicative of boron contamination of Anar underground water. Methods: In the present study, 50 deep wells covering Anar plain were selected based on statistical methods. Boron con­centration in each well was measured by Azomethine- H method in the middle of each season, from 2003 to 2007. Results: Comparing the obtained boron concentrations with WHO guidelines, Anar underground water is not safe for drink­ing (mean= 8.88 mg/L). In major part of the plain, the quality of water is not suitable for the growth of plants that are sensi­tive and unresisting to boron. Only in 17.1% of the samples boron concentration was between 0.7-3 mg/L that based on the guide­lines of Food and Agriculture Organization is suitable for some types of plants. Field studies about the area flora con­firm the obtained results too. Changes in the quality of underground water during the years of study, showed a worsening proc­ess over time. Conclusion: To solve the problem, mixing of the water of low boron wells with high boron wells is recommended. https://ijph.tums.ac.ir/index.php/ijph/article/view/2094 https://ijph.tums.ac.ir/index.php/ijph/article/download/2094/2075