Therese Ncheuveu Nkwatoh, Patricia Bi Asanga Fai, Martin Ngankam Tchamba, Nokenyi Emmanuel Titaku
{"title":"Dietary risk assessment of drinking water and fish from cultivated wetlands of Ndop.","authors":"Therese Ncheuveu Nkwatoh, Patricia Bi Asanga Fai, Martin Ngankam Tchamba, Nokenyi Emmanuel Titaku","doi":"10.2166/wh.2024.057","DOIUrl":"https://doi.org/10.2166/wh.2024.057","url":null,"abstract":"<p><p>This study evaluated pesticide exposure practices, and the potential health risks of drinking water and consuming fish from the cultivated wetlands of Ndop, Cameroon. Six hundred and twenty-six questionnaires were conveniently administered to farmers (≥ 26 years old) in a cross-sectional study to assess exposure practices and dietary risks. The Chi-square and Pearson correlation coefficients were used to establish relationships between variables. The PRIMET model was used to predict a worst-case dietary risk. The pesticide handling practices of 90% of farmers were inadequate. Chlorpyriphos, lambda-cyhalothrin, fipronil, and paraquat dichloride posed a possible dietary risk at recommended and applied doses, with chlorpyrifos having the highest exposure toxicity ratio (ETR<sub>diet</sub> = 36.72). Paraquat dichloride, fipronil, and lambda-cyhalothrin posed a possible dietary risk at 26.3%, 58.3%, and 62.2% of their recommended concentrations, respectively. Remarkably, the dietary risk for cypermethrin was acceptable at 5.8 times its recommended dose (ETR<sub>dietR</sub> = 0.29). The significant positive correlation (p = 0.000) between PEC<sub>fish</sub> and ETR<sub>diet</sub>, suggests a possible health risk of consuming fish and drinking water harvested from the wetlands, thus the need for replacing pesticides posing possible risks at lower or recommended concentrations with less toxic alternatives and to train farmers on pesticide application practices.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 6","pages":"1075-1087"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141469063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shabnam Khavandi, Nasrin Habibzadeh, Kamal Hasani, Mehran Sardari, Mohsen Arzanlou
{"title":"Carbapenem-resistant <i>Enterobacterales</i> in wastewater resources and healthy carriers: A survey in Iran.","authors":"Shabnam Khavandi, Nasrin Habibzadeh, Kamal Hasani, Mehran Sardari, Mohsen Arzanlou","doi":"10.2166/wh.2024.041","DOIUrl":"https://doi.org/10.2166/wh.2024.041","url":null,"abstract":"<p><p>The carbapenem-resistant <i>Enterobacterales</i> (CRE) pose a pressing public health concern. Here, we investigated the frequency of CRE bacteria, carbapenemase-encoding genes, and the molecular epidemiology of carbapenemase-resistant <i>Escherichia coli</i> in wastewater resources and healthy carriers in Iran. Out of 617 <i>Enterobacterales</i> bacteria, 24% were carbapenem-resistant. The prevalence of CRE bacteria in livestock and poultry wastewater at 34% and hospital wastewater at 33% was significantly higher (<i>P</i> ≤ 0.05) than those in healthy carriers and municipal wastewater at 22 and 17%, respectively. The overall colonization rate of CRE in healthy individuals was 22%. Regarding individual <i>Enterobacterales</i> species, the following percentages of isolates were found to be CRE: <i>E. coli</i> (18%), <i>Citrobacter</i> spp. (24%), <i>Klebsiella pneumoniae</i> (28%), <i>Proteus</i> spp<i>.</i> (40%), <i>Enterobacter</i> spp. (25%), <i>Yersinia</i> spp. (17%), <i>Hafnia</i> spp. (31%), <i>Providencia</i> spp. (21%), and <i>Serratia</i> spp. (36%). The <i>bla</i><sub>OXA-48</sub> gene was detected in 97% of CRE isolates, while the <i>bla</i><sub>NDM</sub> and <i>bla</i><sub>VIM</sub> genes were detected in 24 and 3% of isolates, respectively. The B2 phylogroup was the most prominent group identified in carbapenem-resistant <i>E. coli</i> isolates, accounting for 80% of isolates. High prevalence of CRE with transmissible carbapenemase genes among healthy people and wastewater in Iran underscores the need for assertive measures to prevent further dissemination.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 6","pages":"1053-1063"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141469050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A soft-sensor approach for predicting an indicator virus removal efficiency of a pilot-scale anaerobic membrane bioreactor (AnMBR).","authors":"Syun-Suke Kadoya, Yifan Zhu, Rong Chen, Chao Rong, Yuyou Li, Daisuke Sano","doi":"10.2166/wh.2024.251","DOIUrl":"https://doi.org/10.2166/wh.2024.251","url":null,"abstract":"<p><p>The anaerobic membrane bioreactor (AnMBR) is a promising technology for not only water reclamation but also virus removal; however, the virus removal efficiency of AnMBR has not been fully investigated. Additionally, the removal efficiency estimation requires datasets of virus concentration in influent and effluent, but its monitoring is not easy to perform for practical operation because the virus quantification process is generally time-consuming and requires specialized equipment and trained personnel. Therefore, in this study, we aimed to identify the key, monitorable variables in AnMBR and establish the data-driven models using the selected variables to predict virus removal efficiency. We monitored operational and environmental conditions of AnMBR in Sendai, Japan and measured virus concentration once a week for six months. Spearman's rank correlation analysis revealed that the pH values of influent and mixed liquor suspended solids (MLSS) were strongly correlated with the log reduction value of pepper mild mottle virus, indicating that electrostatic interactions played a dominant role in AnMBR virus removal. Among the candidate models, the random forest model using selected variables including influent and MLSS pH outperformed the others. This study has demonstrated the potential of AnMBR as a viable option for municipal wastewater reclamation with high microbial safety.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 6","pages":"967-977"},"PeriodicalIF":2.5,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141469049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Charles P Humphrey, Guy Iverson, Eli Hvastkovs, Sushama Pradhan
{"title":"Occurrence and concentrations of traditional and emerging contaminants in onsite wastewater systems and water supply wells in eastern North Carolina, USA.","authors":"Charles P Humphrey, Guy Iverson, Eli Hvastkovs, Sushama Pradhan","doi":"10.2166/wh.2024.299","DOIUrl":"10.2166/wh.2024.299","url":null,"abstract":"<p><p>Onsite wastewater treatment systems (OWTSs) and private wells are commonly used in Eastern North Carolina, USA. Water from private wells is not required to be tested after the initial startup, and thus persons using these wells may experience negative health outcomes if their water is contaminated with waste-related pollutants including bacteria, nitrate or synthetic chemicals such as hexafluoropropylne oxide dimer acid and its ammonium salt (GenX). Water samples from 18 sites with OWTSs and groundwater wells were collected for nitrate, Escherichia coli (E. coli), total coliform, and GenX concentration analyses. Results showed that none of the 18 water supplies were positive for E. coli, nitrate concentrations were all below the maximum contaminant level of 10 mg L<sup>-1</sup>, and one well had 1 MPN 100 mL<sup>-1</sup> of total coliform. However, GenX was detected in wastewater collected from all 18 septic tanks and 22% of the water supplies tested had concentrations that exceeded the health advisory levels for GenX. Water supplies with low concentrations of traditionally tested for pollutants (nitrate, E. coli) may still pose health risks due to elevated concentrations of emerging contaminants like GenX and thus more comprehensive and routine water testing is suggested for this and similar persistent compounds.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 3","pages":"550-564"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140336144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jeffery Jones, Asli Aslan, Dziyana Nazaruk, Sibel Zeki
{"title":"Beachgoers' responses to beach health advisories.","authors":"Jeffery Jones, Asli Aslan, Dziyana Nazaruk, Sibel Zeki","doi":"10.2166/wh.2024.306","DOIUrl":"10.2166/wh.2024.306","url":null,"abstract":"<p><p>Drawing on responses from 238 beachgoers who have visited a Georgia (U.S. state) beach in the past three years, this study asks respondents about their knowledge of beach water quality monitoring, awareness of beach health advisories, perception of water quality, and expected responses upon learning of a beach's water pollution advisory. Binomial logistic regression finds that the only demographic predictor of respondents who would completely stop visiting a beach with an advisory is whether the respondent is a visitor or resident (year-round or part-time). Nearly 40% of visitors would not come to a beach with an advisory compared to 13.4% of residents. Most respondents report they would continue to visit a beach but would stay out of the water and stop harvesting seafood from the beach's waters. More than a third (36.1%), however, are unaware Georgia regularly monitors beach water for water quality, and 41.2% have never read a beach sign warning of contaminated water or seafood. Alarmingly, just over half view aesthetic factors such as no litter, no odor, and clear water as criteria for defining whether beach water is safe.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 3","pages":"565-571"},"PeriodicalIF":2.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140336143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A comprehensive review of human health risks of arsenic and fluoride contamination of groundwater in the South Asia region.","authors":"Yash Aryan, Thambidurai Pon, Balamurugan Panneerselvam, Anil Kumar Dikshit","doi":"10.2166/wh.2023.082","DOIUrl":"10.2166/wh.2023.082","url":null,"abstract":"<p><p>The present study found that ∼80 million people in India, ∼60 million people in Pakistan, ∼70 million people in Bangladesh, and ∼3 million people in Nepal are exposed to arsenic groundwater contamination above 10 μg/L, while Sri Lanka remains moderately affected. In the case of fluoride contamination, ∼120 million in India, >2 million in Pakistan, and ∼0.5 million in Sri Lanka are exposed to the risk of fluoride above 1.5 mg/L, while Bangladesh and Nepal are mildly affected. The hazard quotient (HQ) for arsenic varied from 0 to 822 in India, 0 to 33 in Pakistan, 0 to 1,051 in Bangladesh, 0 to 582 in Nepal, and 0 to 89 in Sri Lanka. The cancer risk of arsenic varied from 0 to 1.64 × 1<sup>-1</sup> in India, 0 to 1.07 × 10<sup>-1</sup> in Pakistan, 0 to 2.10 × 10<sup>-1</sup> in Bangladesh, 0 to 1.16 × 10<sup>-1</sup> in Nepal, and 0 to 1.78 × 10<sup>-2</sup> in Sri Lanka. In the case of fluoride, the HQ ranged from 0 to 21 in India, 0 to 33 in Pakistan, 0 to 18 in Bangladesh, 0 to 10 in Nepal, and 0 to 10 in Sri Lanka. Arsenic and fluoride have adverse effects on animals, resulting in chemical poisoning and skeletal fluorosis. Adsorption and membrane filtration have demonstrated outstanding treatment outcomes.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 2","pages":"235-267"},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2023_082/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139990475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Erratum: Journal of Water and Health 21 (2), 160-165: Survey of float tank operating practices, Laura Michele Suppes, Ashkahn Jahromi and Roy Vore, https://doi.org/10.2166/wh.2023.162.","authors":"","doi":"10.2166/wh.2024.001","DOIUrl":"10.2166/wh.2024.001","url":null,"abstract":"","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 2","pages":"450"},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2024_001/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139990476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cecilia Hernández-Zepeda, Luis Jorge Negrete-Alcalde, Gabriela Rosiles-González, Victor Hugo Carrillo-Jovel, Sarah E Abney, Walter Q Betancourt, Charles P Gerba, Cristóbal Chaidez-Quiroz, Amanda M Wilson
{"title":"Human adenovirus-associated health risk in the recreational waters of the Yal-ku lagoon in the Mexican Caribbean.","authors":"Cecilia Hernández-Zepeda, Luis Jorge Negrete-Alcalde, Gabriela Rosiles-González, Victor Hugo Carrillo-Jovel, Sarah E Abney, Walter Q Betancourt, Charles P Gerba, Cristóbal Chaidez-Quiroz, Amanda M Wilson","doi":"10.2166/wh.2024.309","DOIUrl":"10.2166/wh.2024.309","url":null,"abstract":"<p><p>The study objective was to evaluate human faecal contamination impacts in the Yal-ku lagoon in the Mexican Caribbean and to estimate adenovirus infection and illness risks associated with recreational exposure during water activities. A total of 20 water samples (10 from each site × two sites) (50 L) were collected monthly over a period of 12 months from two selected sampling sites in the swimming area of the Yal-ku lagoon. The occurrence of faecal-associated viruses was explored, and human adenovirus (HAdV) and pepper mild mottle virus (PMMoV) concentrations were quantified. A quantitative microbial risk assessment (QMRA) model was used to estimate exposure and subsequent adenovirus infection and illness risk for 1 h of swimming or snorkelling. Somatic and F + -specific coliphages occurred in 100% of the samples. Both HAdV and PMMoV were detected at a 60% frequency thereby indicating persistent faecal inputs. PMMoV concentrations (44-370 GC/L) were relatively lower than the concentrations of HAdV (64-1,000 GC/L). Estimated mean adenovirus risks were greater for snorkelling than for swimming by roughly one to two orders of magnitude and estimated mean illness risks for snorkelling were >32/1,000. Human faecal contamination is frequent in the Yal-ku lagoon, which is associated with human gastrointestinal illness.</p>","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"22 2","pages":"372-384"},"PeriodicalIF":2.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/wh_2024_309/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139990477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Unveiling the viral escape: quantification of microfloc-bound viruses in precoagulation and membrane filtration","authors":"M. Yasui, Hiroyuki Katayama","doi":"10.2166/wh.2024.233","DOIUrl":"https://doi.org/10.2166/wh.2024.233","url":null,"abstract":"\u0000 \u0000 The implementation of precoagulation before the physical removal process is expected to achieve a high virus removal rate. However, viruses may form small flocs and subsequently escape into the effluent during physical removal processes. This study evaluated how viruses in the microflocs could be quantified using conventional virus quantification methods (plaque assay and quantitative polymerase chain reaction (qPCR)) to reveal the risk of underestimating virus concentration. In this study, the microfloc dissolution phenomenon in phosphate buffer solution was employed as a floc dissolution test. Viruses in microflocs formed under the experimental conditions, assuming that water treatments were quantified before and after floc dissolution. The findings revealed that virus concentrations increased by 1.0–3.9 log plaque-forming units/mL according to the plaque assay and by 1.7–4.0 log copies/mL according to the qPCR. This increase occurred after the dissolution of microflocs that were prepared in the humic acid test water. In the case of treated wastewater, virus concentrations increased in all samples according to the plaque assay and in seven of eight samples according to the qPCR. Our results indicate the necessity of careful consideration of virus quantification after precoagulation and physical removal systems.","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"5 11","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139438939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emmanuel Sanu Ogundairo, G. M. Folarin, J. A. Awomeso, A. Taiwo
{"title":"Impact of abattoirs and local textile (Adire and Kampala) effluents on Yemoja River in Abeokuta, Nigeria","authors":"Emmanuel Sanu Ogundairo, G. M. Folarin, J. A. Awomeso, A. Taiwo","doi":"10.2166/wh.2024.316","DOIUrl":"https://doi.org/10.2166/wh.2024.316","url":null,"abstract":"\u0000 Discharge of untreated wastewater into water bodies pollutes the receiving waters. This study assessed the impact of abattoir and Kampala designers' effluent discharge on the water quality of the Yemoja River in Abeokuta, Nigeria. Twenty-seven water samples collected at three points, covering 180 m length, for 6 months were assessed for physicochemical parameters and metals and compared with the World Health Organization and Standard Organization of Nigeria permissible standards. Most discharge point levels were found to be higher than their corresponding upstream and downstream values. Temperature, turbidity, magnesium, alkalinity, DO, TSS, phosphate, lead, BOD and potassium were found to be in excess of normal levels for river water as prescribed by the World Health Organization and Standard Organization of Nigeria while parameters like TDS, TS, calcium, chloride, nitrate, sulphate, iron and COD were lower than the standards. The total coliform values were higher than both national and international permissible limits, indicating contamination by human sewage or animal droppings. The water quality index indicated polluted water that is unfit for consumption. Findings from this research indicate that butchering and tie-and-dye activities have impacted river Yemoja water quality. Therefore, wastewater from the abattoir and textile industries be treated before discharge into water bodies.","PeriodicalId":17436,"journal":{"name":"Journal of water and health","volume":"2 7","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139439351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}