The sustainability of municipal wastewater irrigation in the Interlake Region of Manitoba as a means of nitrogen and phosphorous abatement for Lake Winnipeg
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SubjectSewage irrigation; Irrigation; Sewage; Land treatment of wastewater; Water reuse; Interlake Region (Man.); Manitoba; Surveys (Research methodology)
In Manitoba there are an estimated 200 small and 10 large wastewater treatment systems contributing nutrients to surface water when effluent is discharged. The objective of this study was to assess the sustainability and social acceptance of wastewater irrigation in the southeast Interlake region. It was concluded that sustainably irrigating forage crops would be challenging. The combination of soils with only ratings of fair for irrigability and the low quality of wastewater limits the long term sustainability of irrigation. Only one study site maintains a high potential to develop a wastewater irrigation program due to sufficient suitable land and appropriate wastewater quality. The social acceptance of wastewater irrigation is mixed with only about half the survey respondents favourable to irrigation or reuse of wastewater.
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