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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Ekologiya cheloveka (Human Ecology)</journal-id><journal-title-group><journal-title xml:lang="en">Ekologiya cheloveka (Human Ecology)</journal-title><trans-title-group xml:lang="ru"><trans-title>Экология человека</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1728-0869</issn><issn publication-format="electronic">2949-1444</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">631755</article-id><article-id pub-id-type="doi">10.17816/humeco631755</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL STUDY ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Assessment of changes in hygienic indicators of drinking water from сentralized water supply systems during transportation</article-title><trans-title-group xml:lang="ru"><trans-title>Оценка динамики гигиенических показателей питьевой воды централизованных систем водоснабжения в процессе транспортировки</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title>集中供水系统输送过程中饮用水卫生指标变化的评估</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5580-5442</contrib-id><contrib-id contrib-id-type="spin">9744-7639</contrib-id><name-alternatives><name xml:lang="en"><surname>Shmeleva</surname><given-names>Valeria D.</given-names></name><name xml:lang="ru"><surname>Шмелева</surname><given-names>Валерия Дмитриевна</given-names></name><name xml:lang="zh"><surname>Shmeleva</surname><given-names>Valeria D.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>ha-lera@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4172-609X</contrib-id><contrib-id contrib-id-type="spin">4906-4348</contrib-id><name-alternatives><name xml:lang="en"><surname>Kislitsyna</surname><given-names>Lidiya V.</given-names></name><name xml:lang="ru"><surname>Кислицына</surname><given-names>Лидия Владимировна</given-names></name><name xml:lang="zh"><surname>Kislitsyna</surname><given-names>Lidiya V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sgm@fguzpk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-3852-1014</contrib-id><contrib-id contrib-id-type="spin">8473-8686</contrib-id><name-alternatives><name xml:lang="en"><surname>Romanova</surname><given-names>Olga B.</given-names></name><name xml:lang="ru"><surname>Романова</surname><given-names>Ольга Борисовна</given-names></name><name xml:lang="zh"><surname>Romanova</surname><given-names>Olga B.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>romanovaob@fguzpk.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5191-4713</contrib-id><contrib-id contrib-id-type="spin">1588-8371</contrib-id><name-alternatives><name xml:lang="en"><surname>Alenitckaia</surname><given-names>Marina V.</given-names></name><name xml:lang="ru"><surname>Аленицкая</surname><given-names>Марина Владимировна</given-names></name><name xml:lang="zh"><surname>Alenitckaia</surname><given-names>Marina V.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><bio xml:lang="zh"><p>MD, Dr. Sci (Medicine), Professor</p></bio><email>trial766@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0006-8586-6437</contrib-id><contrib-id contrib-id-type="spin">7583-2220</contrib-id><name-alternatives><name xml:lang="en"><surname>Pugacheva</surname><given-names>Eva S.</given-names></name><name xml:lang="ru"><surname>Пугачева</surname><given-names>Ева Сергеевна</given-names></name><name xml:lang="zh"><surname>Pugacheva</surname><given-names>Eva S.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Graduate student</p></bio><bio xml:lang="ru"><p>аспирант</p></bio><bio xml:lang="zh"><p>Graduate student</p></bio><email>pugachova.eva@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Center of Hygiene and Epidemiology in Primorsky Region</institution></aff><aff><institution xml:lang="ru">Центр гигиены и эпидемиологии в Приморском крае</institution></aff><aff><institution xml:lang="zh">Center of Hygiene and Epidemiology in Primorsky Region</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Far Eastern Federal University</institution></aff><aff><institution xml:lang="ru">Дальневосточный федеральный университет</institution></aff><aff><institution xml:lang="zh">Far Eastern Federal University</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Pacific Geographical Institute of the Far Eastern Branch of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Тихоокеанский институт географии Дальневосточного отделения Российской академии наук</institution></aff><aff><institution xml:lang="zh">Pacific Geographical Institute of the Far Eastern Branch of the Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2024-12-04" publication-format="electronic"><day>04</day><month>12</month><year>2024</year></pub-date><pub-date date-type="pub" iso-8601-date="2024-12-20" publication-format="electronic"><day>20</day><month>12</month><year>2024</year></pub-date><volume>31</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>380</fpage><lpage>392</lpage><history><date date-type="received" iso-8601-date="2024-05-08"><day>08</day><month>05</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-11-12"><day>12</day><month>11</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2025,</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hum-ecol.ru/1728-0869/article/view/631755">https://hum-ecol.ru/1728-0869/article/view/631755</self-uri><abstract xml:lang="en"><p><bold><italic>BACKGROUND: </italic></bold>Although the majority of drinking water from centralized water supply systems meets the established standards, its quality still may be compromised during its transportation to the end user via pipeline systems.</p> <p><bold><italic>AIM: </italic></bold>To assess the changes in the composition of drinking water from centralized water supply systems during transportation with the Primorsky Territory as an example.</p> <p><bold><italic>MATERIALS AND METHODS: </italic></bold>The findings of the 2016–2022 laboratory studies conducted by the Center for Hygiene and Epidemiology in the Primorsky Territory as part of the social and hygienic monitoring program (189 monitoring points) were subjected to analysis. The pre- and post-distribution network data were compared using Microsoft Office Excel. The analysis of 18 indicators (19,485 pairwise comparisons) was conducted using IBM SPSS Statistics, while spatial visualization was performed with ArcGIS 10.8.2.</p> <p><bold><italic>RESULTS: </italic></bold>Among the hygienic indicators, the color of water significantly (<italic>p</italic>=0.005) intensifies after passing via the water supply pipeline system. Correlation analysis indicates that the color intensification may be attributed to the oxidizability of iron, manganese, and permanganate (<italic>r</italic>=0.28; <italic>r</italic>=0.21; <italic>r</italic>=0.13 at <italic>p</italic> &lt;0.05, respectively). The hydrogen index demonstrates a tendency to shift towards an acidic medium, particularly during the summer months (<italic>χ</italic><sup>2</sup>=14.5; <italic>p</italic>=0.002). The assessment of the influence of the water dispenser type revealed a tendency of the iron and some microbiological indicators to accumulate in standpipe systems, while the concentrations of these indicators were found to be decreased in building taps. The indicative significance of the microbiological indicators (generalized coliform bacteria, <italic>E. coli</italic>, enterococci) was recently highlighted in regulatory documents on the hygienic assessment of water quality. These bacteria are more frequently found in the distribution network than the nowadays excluded coliform bacteria, both general and thermotolerant. A spatial analysis of the proportion of drinking water samples that deteriorate during transportation enabled the identification of the water supply systems in the region where transportation represents a significant factor influencing the deterioration of water quality.</p> <p><bold><italic>CONCLUSION: </italic></bold>The retrospective analysis of the changes in the composition of drinking water from centralized water supply systems during transportation identified the indicators that are most susceptible to changes. This can be used when planning the upgrade of the water supply and treatment systems.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Хотя большая часть питьевой воды централизованных систем водоснабжения соответствует действующим стандартам, всё ещё остаётся вероятность изменения качества воды у конечного потребителя после её транспортировки по системе трубопроводов.</p> <p><bold>Цель.</bold> Оценить динамику состава питьевой воды централизованных систем водоснабжения в процессе транспортировки на примере Приморского края.</p> <p><bold>Материалы и методы.</bold> Проанализированы результаты лабораторных испытаний за 2016–2022 гг., выполненных ИЛЦ ФБУЗ «Центр гигиены и эпидемиологии в Приморском крае» в рамках социально-гигиенического мониторинга (189 мониторинговых точек). Сведение данных до и после подачи в распределительную сеть выполнено в Microsoft Office Excel, аналитическая часть по 18 показателям (19 485 попарных сравнений) — в IBM SPSS Statistics, пространственная визуализация — в ArcGIS 10.8.2.</p> <p><bold>Результаты.</bold> Среди гигиенических показателей цветность воды значимо (<italic>p</italic>=0,005) увеличивается после прохождения через систему труб водоснабжения. Согласно корреляционному анализу, увеличение цветности, возможно, связано с железом, марганцем и перманганатной окисляемостью (соответственно <italic>r</italic>=0,28; <italic>r</italic>=0,21; <italic>r</italic>=0,13 при <italic>p</italic> &lt;0,05). Водородный показатель изменяется в сторону кислой среды, особенно в летний период (<italic>χ</italic><sup>2</sup>=14,5; <italic>p</italic>=0,002). Оценка влияния типа водоразборного устройства выявила тенденцию железа и некоторых микробиологических показателей накапливаться в системах водоразборных колонок, в то время как для внутренних водоразборных устройств характерно уменьшение концентраций данных показателей. Отмечена индикаторная значимость микробиологических показателей (обобщённые колиформные бактерии, <italic>E. Coli</italic>, энтерококки), введённых недавно в нормативные документы по гигиенической оценке качества воды. Они чаще обнаруживаются в распределительной сети, чем исключённые к настоящему моменту общие и термотолерантные колиформные бактерии. Пространственный анализ доли проб питьевой воды, ухудшающихся в процессе транспортировки, позволил выделить водопроводы края, где транспортировка является приоритетным фактором ухудшения качества воды.</p> <p><bold>Заключение.</bold> Ретроспективный анализ динамики состава питьевой воды централизованных систем водоснабжения в процессе транспортировки определил наиболее подверженные изменениям показатели, что может быть использовано при планировании модернизации систем водоснабжения и водоподготовки.</p></trans-abstract><trans-abstract xml:lang="zh"><p>背景。尽管集中供水系统的大部分饮用水符合现行标准，但在通过管网输送至最终用户的过程中，其水质可能发生显著变化。</p> <p>研究目的。以滨海边疆区为例，评估集中供水系统输送过程中饮用水成分的动态变化。</p> <p>材料与方法。分析了2016–2022年期间由滨海边疆区公共卫生与流行病学中心测试实验室（Center for Hygiene and Epidemiology in the Primorsky Territory）在社会卫生监测框架下完成的实验室检测结果（共189个监测点）。利用Microsoft Office Excel对供水网络分配前后数据进行整理，并使用IBM SPSS Statistics对18项指标（19,485对比数据）进行分析。同时，通过ArcGIS 10.8.2进行空间可视化。</p> <p>结果。卫生指标显示，水的色度在通过供水管网后显著增加（p=0.005）。相关性分析表明，色度增加可能与铁、锰和高锰酸盐指数相关（相关系数分别为r=0.28；r=0.21；r=0.13， p &lt;0.05）。pH值倾向于向酸性方向变化，尤其是在夏季（χ<sup>2</sup>=14.5；p=0.002）。不同类型取水装置的影响评估显示，铁和某些微生物指标更容易在水柱取水系统中积累，而在建筑物水龙头中这些指标的浓度有所下降。最近被纳入水质卫生评估规范的微生物指标（综合大肠菌群、E. сoli 和肠球菌）被证明具有重要的指示意义，这些指标在分配网络中更常被检测到，而之前被排除的总大肠菌群和耐热大肠菌群检测频率较低。饮用水在输送过程中质量下降样本比例的空间分析突出了一些管网，这些管网输送过程对水质恶化起到了主要作用。</p> <p>结论。集中供水系统输送过程中饮用水成分变化的回顾性分析确定了最容易发生变化的关键指标。这些结果可为供水和水处理系统的现代化规划提供依据。</p></trans-abstract><kwd-group xml:lang="en"><kwd>centralized drinking water supply systems</kwd><kwd>DWDS</kwd><kwd>transportation</kwd><kwd>dynamics</kwd><kwd>analysis</kwd><kwd>social-hygienic monitoring</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>системы питьевого централизованного водоснабжения</kwd><kwd>ЦВС</kwd><kwd>транспортировка</kwd><kwd>динамика</kwd><kwd>анализ</kwd><kwd>социально-гигиенический мониторинг</kwd></kwd-group><kwd-group xml:lang="zh"><kwd>集中供水系统</kwd><kwd>CWS</kwd><kwd>输送</kwd><kwd>动态</kwd><kwd>分析</kwd><kwd>社会卫生监测</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Isaev DS, Mozzhukhina NA, Stepanyan AA. 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