Are carbon water filters safe for private wells? Evaluating the occurrence of microbial indicator organisms in private well water treated by point-of-use activated carbon block filters
| Autor: | Emanuele Sozzi, Jacqueline MacDonald Gibson, Jill R. Stewart, Riley Mulhern, Hania Zanib, Megan A. Stallard |
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| Rok vydání: | 2021 |
| Předmět: |
Indicator organism
Bacteria Public Health Environmental and Occupational Health Contamination Filter (aquarium) Water Purification Toxicology Charcoal Water Quality medicine Environmental science Water treatment Water quality Water Microbiology Effluent Water use Filtration Activated carbon medicine.drug |
| Zdroj: | International journal of hygiene and environmental health. 238 |
| ISSN: | 1618-131X |
| Popis: | Point-of-use (POU) water treatment is highly relevant to private well users vulnerable to chemical contamination, but uncertainty remains around the effects of activated carbon based POU devices on the microbial quality of the treated water. In this study, under-sink activated carbon block water filters were installed in 17 homes relying on private well water in North Carolina. The influent and effluent water in each home was evaluated for bacterial and viral microbial indicator organisms monthly for five months. Multiple logistic regression was used to identify water quality and water usage variables that were significant predictors of each indicator organism occurring in the filter effluent. The odds of total coliforms occurring in the effluent decreased by 84% with each 1-log10 increase in the influent HPC (p |
| Databáze: | OpenAIRE |
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