Who is required to design an on-site system when the minimum lot size cannot be met?

The requirement to have a design for an on-site sewage facility (OSSF) when the minimum lot size cannot be met hinges on ensuring that the system is adequately engineered and designed to accommodate the specific challenges presented by limited space. This is critical for preventing environmental contamination and safeguarding public health.

In scenarios where the minimum lot size is not adhered to, the design of sewage systems must comply with more rigorous standards, thus necessitating expertise. A registered professional engineer possesses the technical knowledge and qualifications to design systems that are efficient and compliant with applicable regulations, while a registered sanitarian brings a focus on the public health and sanitation aspects of sewage systems.

The collaboration or combined expertise of both a registered professional engineer and a registered sanitarian ensures that the design not only meets engineering standards but also upholds health codes and environmental protections, making it necessary for both professionals to be involved in such cases. This requirement reflects the complex interplay between safety, health, and environmental stewardship in the planning and implementation of on-site sewage management solutions.