ArticleEnvironmental science and pollution research international2018
Removal of helminth eggs by centralized and decentralized wastewater treatment plants in South Africa and Lesotho: health implications for direct and indirect exposure to the effluents.
Article in Environmental science and pollution research international, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The survival and dispersal of Taenia eggs in the environment: what are the implications for transmission? A systematic review.Parasites & vectors · 2021Pooled it
- Intestinal parasitic infection among household contacts of primary cases, a comparative cross-sectional study.PloS one · 2019Trial
- Evaluation of Suitable Reference Gene During the Development of Paired or Unpaired FemalePathogens (Basel, Switzerland) · 2025Article
- A narrative review of wastewater surveillance: pathogens of concern, applications, detection methods, and challenges.Frontiers in public health · 2024Review
- Diagnostic tools for the detection of taeniid eggs in different environmental matrices: A systematic review.Food and waterborne parasitology · 2022Article
- Effect of Wastewater Treatment on Bacterial Community, Antibiotic-Resistant Bacteria and Endoparasites.International journal of environmental research and public health · 2022Article
- Evaluation of contaminants removal by waste stabilization ponds: A case study of Siloam WSPs in Vhembe District, South Africa.Heliyon · 2021Article
- Impact of informal settlements and wastewater treatment plants on helminth egg contamination of urban rivers and risks associated with exposure.Environmental monitoring and assessment · 2020Article
- Soil-transmitted helminth infections associated with wastewater and sludge reuse: a review of current evidence.Tropical medicine & international health : TM & IH · 2018Review
Corrections and comments
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Authors and funding
4 authors.
Funding
Abstract
Wastewater may contain contaminants harmful to human health; hence, there is the need for treatment before discharge. Centralized wastewater treatment systems are the favored treatment options globally, but these are not necessarily superior in reduction of pathogens as compared to decentralized wastewater treatment systems (collectively called DEWATS). This study was therefore undertaken to assess the soil-transmitted helminth (STH) and Taenia sp. egg reduction efficiency of selected anaerobic baffled reactors and planted gravel filters compared to centralized wastewater treatment plants in South Africa and Lesotho. The risk of ascariasis with exposure to effluents from the centralized wastewater treatment plants was also assessed using the quantitative microbial risk assessment (QMRA) approach. Eggs of Ascaris spp., hookworm, Trichuris spp., Taenia spp., and Toxocara spp. were commonly detected in the untreated wastewater. The DEWATS plants removed between 95 and 100% of the STH and Taenia sp. eggs, with centralized plants removing between 67 and 100%. Helminth egg concentrations in the final effluents from the centralized wastewater treatment plants were consistently higher than those in the WHO recommended guideline (≤ 1 helminth egg/L) for agricultural use resulting in higher risk of ascariasis. Therefore, in conclusion, DEWATS plants may be more efficient in reducing the concentration of helminth eggs in wastewater, resulting in lower risks of STH infections upon exposure.
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