en School Health School Health پژوهشي Research <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Introduction:</span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""> Water is the most important life-sustaining substance for various living organisms, including humans. Among the most important physicochemical parameters in water include nitrite, nitrate, fluoride, dissolved oxygen, and turbidity. The presence of these parameters in drinking water at excessively high or low levels over the long term can pose health risks to the community. Therefore, this study aims to examine the concentrations of these physicochemical parameters in the drinking water sources of Ilam city from 2021 to 2023.</span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Materials and Methods: </span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">This study is descriptive-analytical. Considering the existence of 13 sources in Ilam city for supplying drinking water, data from all these sources were used. The study spanned three years from 2021 to 2023, with samples collected twice a year (every 6 months) for each parameter, resulting in a total of 78 samples (13&times;3&times;2) for each parameter. All samples were analyzed at the provincial health center laboratory after collection. Finally, the data was analyzed using Excel software and compared with WHO<a href="#_ftn1" name="_ftnref1" title=""><span class="MsoFootnoteReference" style="vertical-align:super"><span class="MsoFootnoteReference" style="vertical-align:super"><span style="font-size:12.0pt"><span style="line-height:107%"><span new="" roman="" style="font-family:" times="">[1]</span></span></span></span></span></a> guidelines.</span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><span dir="RTL" lang="AR-SA" style="font-size:12.0pt"><span style="font-family:"Times New Roman",serif"></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Results and Discussion: </span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">The results showed that the highest average concentration of nitrate and nitrite in Ilam city&#39;s drinking water sources was found in Haft Cheshmeh well in the rural area, with levels of 54.17 mg/l and 2.22 mg/l, respectively, both exceeding national and international standards. Additionally, the highest average turbidity in Ilam city&#39;s drinking water sources was detected in Haft Cheshmeh well, at 5.92 NTU, surpassing both national and global maximum permissible levels. According to the table, the average fluoride concentration in Ilam city&#39;s drinking water sources was within the accepted range for all sources, adhering to national and international standards. The highest three-year average dissolved oxygen level was observed in Khorrmaroudi well, at 7.67 mg/l, which is within the permissible standards.</span></span></span></span></span></span><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Conclusion: </span></span></span></b><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Since most physical and chemical parameter values in Ilam city are below national and international standards, the physicochemical quality of drinking water in Ilam city is not a health concern and is considered safe.</span></span></span></span></span></span> <div><div id="ftn1"></div></div> ,Nitrite,Nitrate,Fluoride,Turbidity,Dissolved Oxygen,Ilam City 24 36 http://jhsp.medilam.ac.ir/browse.php?a_code=A-10-44-2&slc_lang=en&sid=1 Aida Zeinivand 1003194753284600287 1003194753284600287 No Anis Aghaei 1003194753284600288 1003194753284600288 No Zeinab Gholami 1003194753284600289 1003194753284600289 No Fatemeh Ahmadpourbirgani 1003194753284600290 1003194753284600290 No Fatemeh Zangeneh 1003194753284600291 1003194753284600291 No Moayad Adiban 1003194753284600292 1003194753284600292 No Hojjat Sayyadi 1003194753284600293 1003194753284600293 Yes