Under what condition can pressure distribution technology be permitted for public use?

Pressure distribution technology can be permitted for public use when it has the approval of the local health officer. This is important because local health officers are responsible for ensuring that any septic systems or wastewater treatment technologies comply with health standards and regulations in their area. Their approval signifies that the technology meets necessary safety and efficacy guidelines, ensuring it is appropriate for public health considerations.

The other factors mentioned in the options, such as being on a department's list of registered products, being privately owned, or requiring special licensing, may contribute to the overall regulatory framework surrounding the use of such technologies. However, the crucial aspect of permitting public use specifically hinges on the local health officer's discretion and approval, as they assess the impact of the technology within their specific jurisdiction. Thus, local health officer approval is a direct link to maintaining public health and safety in the use of pressure distribution systems.