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Plumber Red Seal · Question

What is the minimum required clearance from the centerline of a water closet to an adjacent side wall or partition, as per the NPC?

To ensure adequate space for access and use, the National Plumbing Code mandates a minimum clearance of 400 mm from the centerline of the water closet to any ad

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Question: What is the minimum required clearance from the centerline of a water closet to an adjacent side wall or partition, as per the NPC?

Answer options:

  • 300 mm
  • 350 mm
  • 380 mm ✅ 400 mm

Correct answer: 400 mm

Explanation: To ensure adequate space for access and use, the National Plumbing Code mandates a minimum clearance of 400 mm from the centerline of the water closet to any adjacent finished wall or partition on the side.

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