Which action best aligns with professional practice when encountering an undocumented septic system installation?

• A. Proceed with the project and request retroactive permits after completion.
• B. Briefly inform the client but continue as if compliant.
• C. Document the issue, then report to the relevant authorities after completion.
• D. Stop work, document findings, inform the client, and advise contacting the proper authorities for permits and approvals.

Answer: (D)

When you encounter an undocumented septic system installation, your priority is to protect health and ensure regulatory compliance by halting work and bringing the issue to the right authorities. Stop work, document what you found, inform the client, and advise contacting the proper authorities for permits and approvals. This approach creates a clear record, prevents unpermitted work from proceeding, and allows a qualified agency to review design, location, and compliance with current codes. Relying on retroactive permits or continuing as if compliant can expose everyone to safety risks, penalties, and potential liability, whereas involving the proper authorities ensures the system is evaluated and any needed corrections or approvals are pursued properly.