Who is responsible for drainage on rural Ontario farm properties?

Drainage on rural Ontario land is primarily governed by the Drainage Act. The Act establishes a system of municipal drains — engineered drainage works — that are funded, constructed, and maintained through assessments levied on landowners whose land drains into or benefits from the drain.

Each landowner assessed under the drainage report is responsible for contributing to the cost of maintenance and repair of their assessed portion of the drain. When a drain needs work, the municipality's drainage superintendent or engineer can report on the required improvements, and costs are assessed among benefiting landowners based on their relative benefit.

If you believe your land is being flooded or negatively affected by drainage from neighbouring land or an inadequate drain, the Drainage Act provides a petition process: you can petition the local municipality to have a new drain constructed or an existing one improved. Neighbours can contest the assessment or the drain engineer's report.

Provincial land use policy and the Nutrient Management Act may also interact with drainage projects on agricultural land. Before buying a farm property, it is worth reviewing whether there are outstanding drainage assessments registered against the property and what share of any future drain maintenance costs the land carries. A lawyer can check this as part of the title review.