Journal of Water and Health最新文献

Point-of-use chlorine residuals and disinfection byproduct occurrences in rural households served by public water utilities in Appalachian Virginia 阿巴拉契亚弗吉尼亚州由公共供水公司提供服务的农村家庭的使用点余氯和消毒副产物发生率

Journal of Water and Health Pub Date : 2024-05-24 DOI: 10.2166/wh.2024.054

Md Rasheduzzaman, Bethesda O'Connell, L. Krometis, Teresa Brown, Alasdair Cohen

{"title":"Point-of-use chlorine residuals and disinfection byproduct occurrences in rural households served by public water utilities in Appalachian Virginia","authors":"Md Rasheduzzaman, Bethesda O'Connell, L. Krometis, Teresa Brown, Alasdair Cohen","doi":"10.2166/wh.2024.054","DOIUrl":"https://doi.org/10.2166/wh.2024.054","url":null,"abstract":"\u0000 We characterized concentrations of trihalomethanes (THMs), a measure of disinfection byproducts (DBPs), in tap water samples collected from households with utility-supplied water in two rural counties in Appalachian Virginia, and assessed associations with pH, free chlorine, and metal ions which can impact THM formation. Free chlorine concentrations in all samples (n = 27 homes) complied with EPA drinking water guidelines, though 7% (n = 2) of first draw samples and 11% (n = 3) of 5-min flushed-tap water samples exceeded the US Safe Drinking Water Act (SDWA) maximum contaminant level (MCL) for THM (80 ppb). Regression analyses showed that free chlorine and pH were positively associated with the formation of THM levels above SDWA MCLs (OR = 1.04, p = 0.97 and OR = 1.74, p = 0.79, respectively), while temperature was negatively associated (OR = 0.78, p = 0.38). Of the eight utilities serving study households, samples from water served by three different utilities exceeded the EPA MCL for THM. Overall, these findings do not indicate substantial exposures to DBPs for rural households with utility-supplied water in this region of southwest Virginia. However, given the observed variability in THM concentrations between and across utilities, and established adverse health impacts associated with chronic and acute DBP exposure, more research on DBPs in rural Central Appalachia is warranted.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"76 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141101741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy metal contamination in Sungai Petani, Malaysia: a wastewater-based epidemiology study 马来西亚双溪大年的重金属污染：基于废水的流行病学研究

Journal of Water and Health Pub Date : 2024-05-22 DOI: 10.2166/wh.2024.241

Iqbal Iman Ruzi, A. Ishak, Muhamad Azwat Abdullah, Nur Nadhirah Mohamad Zain, A. R. Tualeka, Retno Adriyani, Rafeezul Mohamed, H. Edinur, Mohd Yusmaidie Aziz

{"title":"Heavy metal contamination in Sungai Petani, Malaysia: a wastewater-based epidemiology study","authors":"Iqbal Iman Ruzi, A. Ishak, Muhamad Azwat Abdullah, Nur Nadhirah Mohamad Zain, A. R. Tualeka, Retno Adriyani, Rafeezul Mohamed, H. Edinur, Mohd Yusmaidie Aziz","doi":"10.2166/wh.2024.241","DOIUrl":"https://doi.org/10.2166/wh.2024.241","url":null,"abstract":"\u0000 \u0000 The aim of this study was to investigate the use of wastewater-based epidemiology (WBE) to estimate heavy metal exposure in Sungai Petani, Malaysia. Atomic absorption spectroscopy was used to detect copper (Cu), nickel (Ni), zinc (Zn), iron (Fe), and cadmium (Cd) in wastewater from eight sewage treatment facilities in Sungai Petani in January 2022. The heavy metal concentrations were measured in both influent and effluent, and the mean concentrations in the wastewater were found to be in the following order: Fe > Ni > Zn > Cd > Cu, with a 100% detection frequency. The results of WBE estimation showed that Fe, Ni, and Zn had the highest estimated per population exposure levels, while Cd had the lowest. Compared to a similar study conducted in Penang, Malaysia, all metals except Cu were found to have higher concentrations in Sungai Petani, even though it is a non-industrial district. These findings highlight the importance of addressing heavy metal contamination in Sungai Petani and implementing effective risk management and prevention strategies.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"34 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141109614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of microplastics and associated ecological risk in the Hirakud Reservoir, Odisha, India 印度奥迪沙希拉库德水库中的微塑料及相关生态风险评估

Journal of Water and Health Pub Date : 2024-05-22 DOI: 10.2166/wh.2024.393

Kiran Bala Patra, I. Baitharu

{"title":"Assessment of microplastics and associated ecological risk in the Hirakud Reservoir, Odisha, India","authors":"Kiran Bala Patra, I. Baitharu","doi":"10.2166/wh.2024.393","DOIUrl":"https://doi.org/10.2166/wh.2024.393","url":null,"abstract":"\u0000 \u0000 Microplastic has emerged as a global threat owing to its chronic ubiquity and persistence. Microplastics’ small size expedites their ingestion at each trophic level causing biomagnification and bioaccumulation, which has raised public concerns. The present study isolated, quantified and characterized the abundance, shape, size, color, and chemical composition of the microplastics from water and sediments of the Hirakud Reservoir through a Scanning Electron Microscope and FTIR. The ecological risk associated with the microplastics was assessed using the species sensitivity distribution (SSD) method to derive the Predicted No-Effect Concentration (PNEC) value and risk quotient (RQ). The abundance of microplastics in the surface water and sediments of the Hirakud Reservoir was estimated at 82–89 particles/L and 159–163 particles/kg, respectively. Fiber-shaped microplastics dominated both surface water (46.21%) and sediment samples (44.86%). Small-sized microplastics (53–300 μm) prevailed in all samples. Color delineation exhibited an abundance of transparent microplastics. Chemical characterization indicated the dominance of polypropylene (38%), followed by high-density polyethylene, low-density polyethylene, and polystyrene. The calculated PNEC value was 3,954 particles/m3, and the RQ was estimated to be 0.02073–0.04122 indicating negligible ecological risk to freshwater species in all the sampling sites.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"56 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141108105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potassium ferrate's disinfecting ability: a study on human adenovirus, Giardia duodenalis, and microbial indicators under varying pH and water temperature conditions 铁酸钾的消毒能力：在不同 pH 值和水温条件下对人类腺病毒、十二指肠贾第虫和微生物指标的研究

Journal of Water and Health Pub Date : 2024-05-21 DOI: 10.2166/wh.2024.087

L. Boczek, Michael W. Ware, Mark R. Rodgers, Hodon Ryu

{"title":"Potassium ferrate's disinfecting ability: a study on human adenovirus, Giardia duodenalis, and microbial indicators under varying pH and water temperature conditions","authors":"L. Boczek, Michael W. Ware, Mark R. Rodgers, Hodon Ryu","doi":"10.2166/wh.2024.087","DOIUrl":"https://doi.org/10.2166/wh.2024.087","url":null,"abstract":"\u0000 Ferrate (Fe(VI): HFeO4− /FeO42−), a potent oxidant, has been investigated as an alternative chemical disinfectant in water treatment due to its reduced production of disinfection by-products. In this study, we assessed the disinfecting ability of potassium ferrate against a variety of microorganisms, including waterborne pathogens, under varying pH and water temperature conditions. We presented contact time (CT) values, which are a metric of ferrate concentrations (C) and CT (T), to quantify microbial inactivation rates. Among the tested microorganisms, human adenovirus was the least resistant to ferrate, followed by waterborne bacteria such as Escherichia coli and Vibrio cholerae, and finally, the protozoan parasite Giardia duodenalis. We further investigated the impact of two pH values (7 and 8) and two temperatures (5 and 25 °C) on microbial inactivation rates, observing that inactivation rates increased with lower pH and higher temperature. In addition to showcasing ferrate's capacity to effectively inactivate a range of the tested microorganisms, we offer a ferrate CT table to facilitate the comparison of the effectiveness of various disinfection methods.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"114 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141115761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ensuring safe drinking water: converting commitment into action and foresight 确保安全饮用水：将承诺转化为行动和远见

Journal of Water and Health Pub Date : 2024-05-21 DOI: 10.2166/wh.2024.002

Steve E. Hrudey, M. Gunnarsdottir, Annalisa Contos, Susan Petterson

引用次数: 0

Endotoxin, a novel biomarker for the rapid risk assessment of faecal contamination of coastal and transitional waters 内毒素--用于沿海和过渡水域粪便污染快速风险评估的新型生物标志物

Journal of Water and Health Pub Date : 2024-05-15 DOI: 10.2166/wh.2024.122

Christian R. Good, Alistair White, Joao Brandao, Simon Jackson

{"title":"Endotoxin, a novel biomarker for the rapid risk assessment of faecal contamination of coastal and transitional waters","authors":"Christian R. Good, Alistair White, Joao Brandao, Simon Jackson","doi":"10.2166/wh.2024.122","DOIUrl":"https://doi.org/10.2166/wh.2024.122","url":null,"abstract":"\u0000 \u0000 Contaminated water has been responsible for the spread of disease for centuries. Current methods for testing water for faecal contamination rely on the culture of faecal indicator bacteria (FIB; Escherichia coli and Enterococci) that take 24–48 h, which leads to delays in taking proactive measures and poses a risk to public health. More rapid methods are therefore required. Here, we have tested a rapid, portable assay (Bacterisk) that detects the bacterial biomarker endotoxin in 30 min to quantify the bacterial biomass present, to evaluate 159 coastal water samples and to compare the results with the traditional culture of FIB. There was a significant correlation between the Bacterisk data given in endotoxin risk (ER) units and FIB culture that could accurately distinguish between poor and sufficient or good quality bathing water using the EU bathing directive values. Receiver operating characteristic analysis was used to determine the optimal ER threshold for coastal water samples, and the area under the curve was 0.9176 with a p-value of <0.0001. The optimal threshold was 7,300 ER units with a sensitivity of 95.45% and a specificity of 83.48%. In conclusion, we have shown that the Bacterisk assay provides a rapid and easy-to-use in situ method to assess bathing water quality.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141128099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heavy metal profile with health risk peculiarities in Enugu State and their long-term challenges in drinking water 埃努古州具有健康风险特征的重金属概况及其在饮用水中的长期挑战

Journal of Water and Health Pub Date : 2024-03-28 DOI: 10.2166/wh.2024.059

Bright Chigozie Ichu, N. Nwogu, Alexander Iheanyichukwu Opara, A. Agulanna, A. Nkwoada

{"title":"Heavy metal profile with health risk peculiarities in Enugu State and their long-term challenges in drinking water","authors":"Bright Chigozie Ichu, N. Nwogu, Alexander Iheanyichukwu Opara, A. Agulanna, A. Nkwoada","doi":"10.2166/wh.2024.059","DOIUrl":"https://doi.org/10.2166/wh.2024.059","url":null,"abstract":"\u0000 \u0000 Health authorities are particularly concerned about water security in Enugu, southeast Nigeria and heavy metal (HM) pollution. The HM profiles of 51 samples collected from 17 different commercial bottled water brands in Enugu were examined using an FAAS. Cd, Cr, Cu, Pb, Ni, and Zn had mean values of 0.15 ± 0.03, 0.03 ± 0.02, 0.16 ± 0.03, 0.13 ± 0.02, and 0.02 ± 0.01 mg/L, respectively. The highest levels of Pb2+ were 0.27 mg/L in Exalte’, Ni2+ 0.26 mg/L in Jasmine, Cd2+ 0.36 mg/L in Ezbon, Cr3+ 0.07 mg/L in Trinity, Cu2+ 0.04 mg/L in Bigi, and Zn2+ 0.02 mg/L in Aquarapha. The amounts of Cr, Cu, and Zn were below the allowable limits; nevertheless, the Pb content in eight bottled water samples exceeded both the Nigerian and World Health Organization (WHO)/U.S. Environmental Protection Agency (USEPA) permissible limits. The Cd2+ and Ni2+ levels in the 11th and 4th bottled water samples were above the WHO/USEPA-approved limits. Statistical evaluation revealed significant differences in the amounts of HM ions in the samples (p < 0.05). The findings indicated that concentration levels of Cd2+ Ni2+, and Pb2+ pose a public health concern that needs to be addressed due to potential risk to consumer health.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"2 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140369184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intense malarial transmission during the dry season in irrigated rice-growing areas: a case study in Sakassou, Côte d'Ivoire 旱季期间水稻灌溉种植区疟疾传播严重：科特迪瓦萨卡苏案例研究

Journal of Water and Health Pub Date : 2024-03-27 DOI: 10.2166/wh.2024.346

Hermann Obo Beke, D. Zoh, Serge-Brice Assi, C. G. Gbalégba, Konan F Assouho, Mardoché R. K. Azongnibo, C. Edi, A. M. Tanoh, Grégoire Y. Yapi, M. Adja

{"title":"Intense malarial transmission during the dry season in irrigated rice-growing areas: a case study in Sakassou, Côte d'Ivoire","authors":"Hermann Obo Beke, D. Zoh, Serge-Brice Assi, C. G. Gbalégba, Konan F Assouho, Mardoché R. K. Azongnibo, C. Edi, A. M. Tanoh, Grégoire Y. Yapi, M. Adja","doi":"10.2166/wh.2024.346","DOIUrl":"https://doi.org/10.2166/wh.2024.346","url":null,"abstract":"\u0000 The health district of Sakassou is one of the 83 health districts in Côte d'Ivoire, located in a zone with very high malarial transmission rates, with an incidence rate of ≥40% Therefore, to guide vector control methods more effectively, it was crucial to have a good understanding of the vectors in the area. This study aimed to determine the level of malarial transmission during the dry season in Sakassou, Côte d'Ivoire. Female Anopheles mosquitoes were sampled using human landing catches (HLCs) and pyrethrum spraying catches (PSCs). The larvae were collected using the ‘dipping’ method. A total of 10,875 adult female mosquitoes of Anopheles gambiae were collected. The PCR analysis revealed that all individuals were Anopheles coluzzii. The geographical distribution of potential breeding sites of Anopheles showed the presence of An. coluzzii in all the wetlands of the city of Sakassou. During the dry season, the human-biting rate of An. coluzzii was 139.1 bites/person/night. An exophagic trend was displayed by an adult female of An. coluzzii. The entomological inoculation rate during the dry season was 1.49 infectious bites/person/night. This study demonstrated that An. coluzzii was the main vector of malarial transmission in Sakassou, and the intensity of transmission remains high throughout the dry season.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"40 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140376931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cryptosporidium spp. and Eimeria spp. (Apicomplexa: Eimeriorina) of freshwater Cyprinid fish species in the Kura River basin in Azerbaijan territory 阿塞拜疆库拉河流域淡水鲤科鱼类的隐孢子虫属和艾美耳菌属（Apicomplexa: Eimeriorina）的情况

Journal of Water and Health Pub Date : 2024-03-26 DOI: 10.2166/wh.2024.025

Simuzer Mamedova, Panagiotis Karanis

{"title":"Cryptosporidium spp. and Eimeria spp. (Apicomplexa: Eimeriorina) of freshwater Cyprinid fish species in the Kura River basin in Azerbaijan territory","authors":"Simuzer Mamedova, Panagiotis Karanis","doi":"10.2166/wh.2024.025","DOIUrl":"https://doi.org/10.2166/wh.2024.025","url":null,"abstract":"\u0000 \u0000 This study aims to determine the prevalence of Cryptosporidium and Eimeria spp. oocysts in fish specimens in the river Kura (Azerbaijan). It was conducted during the 2021–2022 at two sites: Mingachevir reservoir in central Azerbaijan and in Neftchala district where the river finally enters the Caspian Sea through a delta of the Kura River estuary. The diagnosis was performed microscopically. Fine smears from the intestine epithelial layers stained by the specific modified acid-fast staining method (Ziehl-Neelsen) for Cryptosporidium oocysts. To identify Eimeria oocysts, each fish's faecal material and intestinal scrapings were examined directly under a light microscope in wet samples on glass slides with a coverslip. Results revealed a prevalence of Cryptosporidium and Eimeria species infections in fish hosts from both territories Rutilus caspicus, Alburnus filippi, Abramis brama orientalis and Carassius gibelio. Of 170 investigated fish specimens, 8.8% (15/170) were infected with Cryptosporidium species oocysts. Eimeria species oocysts were identified in 20.6% (35/170). The presence of Cryptosporidium and Eimeria infections in fish specimens are natural infections. However, their presence in fish species may be attributed to the age of the fish species and water pollution. This is the first regarding the prevalence of Cryptosporidium oocysts in fish species in the study area.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"104 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140380783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Occurrence of sulfate-reducing bacteria in well water: identification of anaerobic sulfidogenic bacterial enrichment cultures 井水中硫酸盐还原菌的存在：厌氧硫酸盐细菌富集培养物的鉴定

Journal of Water and Health Pub Date : 2024-03-26 DOI: 10.2166/wh.2024.005

M. Üstüntürk-Onan, Tuğçe Tüccar, E. Ilhan‐Sungur

{"title":"Occurrence of sulfate-reducing bacteria in well water: identification of anaerobic sulfidogenic bacterial enrichment cultures","authors":"M. Üstüntürk-Onan, Tuğçe Tüccar, E. Ilhan‐Sungur","doi":"10.2166/wh.2024.005","DOIUrl":"https://doi.org/10.2166/wh.2024.005","url":null,"abstract":"\u0000 Bacteriological studies of well water mainly focus on aerobic and facultative aerobic coliform bacteria. However, the presence of obligate anaerobic bacteria in well water, especially sulfate-reducing bacteria (SRB), possible causative agents of some diseases, is often ignored. In this study, the presence of SRB and coexisting anaerobic bacteria with SRB in sulfate-reducing enrichment cultures obtained from 10 well water samples in Istanbul was investigated. A nested polymerase chain reaction-denaturing gradient gel electrophoresis strategy was performed to characterize the bacterial community structure of the enrichments. The most probable number method was used to determine the SRB number. Out of 10, SRB growth was observed in only one (10%) enrichment culture and the SRB number was low (<10 cells/mL). Community members were identified as Desulfolutivibrio sulfodismutans and Anaerosinus sp. The results show that SRB coexist with Anaerosinus sp., and this may indicate poor water quality, posing a risk to public health. Furthermore, Anaerosinus sp. found in the human intestinal tract, may be used as an alternative anaerobic fecal indicator. It is worth noting that the detection of bacteria using molecular analyzes following enrichment culture techniques can bring new perspectives to determine the possible origin and presence of alternative microbial indicators in aquatic environments.","PeriodicalId":502550,"journal":{"name":"Journal of Water and Health","volume":"104 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140380772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0