Document Detail

Environmental impact and health risks associated with greywater irrigation: a case study.
MedLine Citation:
PMID:  16312963     Owner:  NLM     Status:  MEDLINE    
There is an increasing trend to use greywater for irrigation in households. This is partly due to the notion that greywater is of better quality than wastewater and therefore does not need extensive treatment beyond addressing public health issues. The aim of the study was to evaluate the environmental impact and health risks associated with the use of greywater for irrigation on a small private farm. Over a three-year period, each of three plots on a farm was irrigated with either freshwater, fertilized water, or greywater. Irrigation water and soil from the plots were analyzed for a wide range of chemical and microbial variables. Results suggest that greywater may be of similar quality to wastewater in several parameters such as BOD and faecal coliforms. For some other variables such as boron and surfactants, greywater may even be of worse quality than wastewater. Long-term irrigation of arid loess soil with greywater may result in accumulation of salts, surfactants and boron in the soil, causing changes in soil properties and toxicity to plants. Faecal coliforms did not survive in the soil. Treating greywater before using it for irrigation is recommended, even in places where this is not a requirement.
A Gross; N Azulai; G Oron; Z Ronen; M Arnold; A Nejidat
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  52     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2005  
Date Detail:
Created Date:  2005-11-29     Completed Date:  2006-07-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  161-9     Citation Subset:  IM    
Department of Environmental Hydrology & Microbiology, Institute for Water Sciences and Technologies, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Israel.
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MeSH Terms
Agriculture / methods*
Analysis of Variance
Boron / analysis
Nitrogen / analysis
Phosphorus / analysis
Soil / analysis*
Soil Microbiology*
Surface-Active Agents / analysis
Waste Disposal, Fluid*
Water Pollutants, Chemical / analysis*
Reg. No./Substance:
0/Soil; 0/Surface-Active Agents; 0/Water Pollutants, Chemical; 7440-42-8/Boron; 7723-14-0/Phosphorus; 7727-37-9/Nitrogen

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