Do I Need an NMS in Ontario?
If you're building a barn, expanding livestock, or increasing nutrient storage in Ontario, you very likely need a Nutrient Management Strategy (NMS). Under O. Reg. 267/03, an NMS is required when certain thresholds are met.
When Is an NMS Required?
An NMS is typically required when you're constructing or expanding a livestock facility, building new manure storage, or making changes that increase the nutrient generation on your farm above 5 nutrient units.
What Happens If I Don't Get One?
Without an approved NMS, you may not be able to obtain building permits or proceed with construction. Delays can cost you a full growing season.
How Do I Get Started?
A qualified nutrient management consultant can assess your operation and prepare your NMS. The process includes a farm visit, nutrient unit calculations, and plan preparation and submission to OMAFRA.
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Frequently Asked Questions
Do I need an NMS to build a barn in Ontario? In most cases, yes — if you are increasing livestock or nutrient storage capacity, you will likely need a Nutrient Management Strategy (NMS) before construction can begin.
What are nutrient units? A nutrient unit is a measurement used under Ontario's Nutrient Management Act to determine the regulatory requirements for your farm. It's based on the type and number of livestock you have.
When do I need both an NMS and an NMP? Typically when your farm operation exceeds 300 nutrient units, you'll need both a Nutrient Management Strategy (NMS) for storage and expansion, and a Nutrient Management Plan (NMP) for land application of nutrients.
How long does approval take? Approval timelines vary depending on the complexity of your operation. Most plans take several weeks from farm visit to final approval. Starting early is critical — delays can cost you a full growing season.