The sustainability of municipal wastewater irrigation in the Interlake Region of Manitoba as a means of nitrogen and phosphorous abatement for Lake Winnipeg
Subject
Sewage irrigation; Irrigation; Sewage; Land treatment of wastewater; Water reuse; Interlake Region (Man.); Manitoba; Surveys (Research methodology)Abstract
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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