RUDN Journal of Ecology and Life SafetyRUDN Journal of Ecology and Life SafetyВестник Российского университета дружбы народов. Серия: Экология и безопасность жизнедеятельности2313-23102408-8919Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)3189710.22363/2313-2310-2022-30-3-373-392Environmental MonitoringЭкологический мониторингResearch ArticleDrinking water quality assessment according to water quality index and health risk assessment: а case study of Pedro Vicente Maldonado canton, EcuadorОценка качества питьевой воды с помощью индекса качества воды и оценки риска для здоровья населения: на примере кантона Педро Висенте Мальдонадо, Республика Эквадорhttps://orcid.org/0000-0002-6927-7863Salazar FloresCristian A.Саласар ФлоресКристиан Александер

PhD student, Institute of Environmental Engineering

аспирант, Институт экологии

cristian_salazarf@hotmail.comhttps://orcid.org/0000-0002-7763-5034KurbatovaAnna I.КурбатоваАнна Игоревна

PhD in Environmental Sciences, Associate Professor, Institute of Environmental Engineering

кандидат биологических наук, доцент, Институт экологии, Международный институт стратегического развития отраслевых экономик

kurbatova-ai@rudn.ruhttps://orcid.org/0000-0001-8051-8528MikhaylichenkoKseniya Yu.МихайличенкоКсения Юрьевна

PhD in Environmental Sciences, Associate Professor, Institute of Environmental Engineering

кандидат биологических наук, доцент, Институт экологии

mikhaylichenko-kyu@rudn.ruPeoples’ Friendship University of Russia (RUDN University)Российский университет дружбы народов13092022303VOL 30, NO3 (2022)ТОМ 30, №3 (2022)37339212092022Copyright ©; 2022, Salazar Flores C.A., Kurbatova A.I., Mikhaylichenko K.Y.Copyright ©; 2022, Саласар Флорес К.А., Курбатова А.И., Михайличенко К.Ю.2022Salazar Flores C.A., Kurbatova A.I., Mikhaylichenko K.Y.Саласар Флорес К.А., Курбатова А.И., Михайличенко К.Ю.https://creativecommons.org/licenses/by-nc/4.0https://journals.rudn.ru/ecology/article/view/31897

The effluent water quality of a treatment plant in a canton of Ecuador according to water quality index (WQI) and health risk assessment was investigated in this study. The quality of the influent and effluent water of the treatment plant was monitored monthly from January 2017 to December 2019. Physicochemical and microbiological parameters, such as temperature, pH, turbidity, color, suspended solids, electrical conductivity, free chlorine, nitrates, nitrites, ammonia nitrogen, sulfates, fluorides, manganese, iron, fecal coliforms and total coliforms were determined. To evaluate the impacts of studied water on human health, health risk assessment for non-cancerogenic elements, including hazard index (HI) and risk of olfactory-reflex effects for organoleptic indicators were performed in accordance with Russian and foreign guidelines. Water quality parameter results were compared with WHO drinking water standards, revealing that the influent was contaminated microbiologically and other parameters such as color, turbidity, and iron were also above the limit values. The WQI results showed that water after purification is suitable for drinking (I class - excellent). Hazard Index (HI) results showed that the non-carcinogenic substances studied had a low risk for both adults and children (<1). Additionally, the risk of olfactory-reflex effect was characterized as acceptable for all the collected purified water samples.

Исследовано качество воды, выходящей со станции водоподготовки в кантоне Педро Висенте Мальдонадо (Республика Эквадор), в соответствии с методическими указаниями по расчету индекса качества воды (ИКВ) и оценке риска для здоровья населения. Ежемесячно с января 2017 г. по декабрь 2019 г. проводился мониторинг качества воды до и после очистки. Определены физико-химические и микробиологические показатели, такие как: температура, рН, мутность, цветность, взвешенные вещества, электропроводность, остаточный хлор, нитраты, нитриты, аммонийный азот, сульфаты, фториды, марганец, железо, колиформы фекальные и общие колиформные бактерии. Для оценки воздействия исследуемой воды на здоровье человека проведен анализ риска для здоровья по неканцерогенным веществам, включая индекс опасности, и риска ольфакторно-рефлекторных эффектов по органолептическим показателям согласно российским и зарубежным рекомендациям. При сопоставлении результатов параметров качества воды со стандартами ВОЗ выявлено, что вода, поступающая на станцию водоподготовки, загрязнена микробиологически, а также параметры, такие как цветность, мутность и содержание железа, превышали предельно допустимые концентрации. По рассчитанным значениям индекса качества воды установлено, что вода после очистки пригодна для питья (I класс - очень чистая). По значениям индексов опасности выявлено, что изученные неканцерогенные вещества имеют низкий риск как для взрослых, так и для детей (<1). Риск появления ольфакторно-рефлекторных эффектов охарактеризован как приемлемый для всех отобранных проб очищенной воды.

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