A plumber is installing new drainage for a commercial laundry facility, including multiple washing machines and floor drains. Before commencing the work, what is the most critical first step to ensure compliance with provincial plumbing regulations?

Question: A plumber is installing new drainage for a commercial laundry facility, including multiple washing machines and floor drains. Before commencing the work, what is the most critical first step to ensure compliance with provincial plumbing regulations?

Answer options: ✅ Obtain all necessary permits from the Authority Having Jurisdiction (AHJ).

• Purchase all required materials for the installation.
• Submit drawings to the engineering department for approval.
• Schedule the final inspection with the plumbing inspector.

Correct answer: Obtain all necessary permits from the Authority Having Jurisdiction (AHJ).

Explanation: Before any significant plumbing work, such as installing new drainage for a commercial facility, it is mandatory to obtain all necessary permits from the local Authority Having Jurisdiction (AHJ). Failing to do so can result in fines, rework, and delays. Purchasing materials or scheduling inspections are subsequent steps.