The Grand River Conservation Authority based in Cambridge, Ont., is asking area residents and businesses to cut their water use by 10 per cent.
The suggestion was made during a virtual meeting by the Grand River Low Water Response Team on Wednesday.
The Team placed the entire watershed at Level 1 due to the unusually dry weather this year.
The move applies to all water users including municipalities, aggregate operations, golf courses, water bottlers, farms for irrigation and private users.
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The conservation authority said the low rainfall that has been occurring since April has contributed to reduced stream flows in a number of tributaries throughout the watershed.
They said in the meantime, residents should follow their respective municipal outdoor water use bylaws which limit watering to specific days and times.