What must an inspector disclose to the client before conducting an on-site wastewater system inspection?

The requirement for inspectors to disclose any interests in businesses that may affect the client is rooted in the principles of transparency and conflict of interest. This disclosure ensures that clients are aware of any potential biases or influences that could impact the inspection process or the conclusions reached. By revealing these interests, an inspector helps maintain professional integrity and fosters trust with the client, allowing them to make informed decisions based on an unbiased assessment.

In the context of the other choices, while knowledge of financial interests in the property or the cost of inspection services is important, these do not directly pertain to the potential impact on the objectivity of the inspection itself. Experience and qualifications, although crucial for establishing credibility, do not directly relate to potential conflicts that could influence the inspection's outcome.