What is a common requirement before septic system installation?

A common requirement before septic system installation is obtaining a permit from the local health department. This process ensures that the installation complies with local regulations and health codes, which are designed to protect public health and the environment. The health department typically reviews plans to ensure the system is suitable for the site conditions, including soil type, groundwater levels, and proximity to water sources. This regulatory oversight helps prevent potential problems such as groundwater contamination or system failure, which could arise from improper installation.

The other options do not reflect standard requirements in septic system installation. For instance, hiring an architect is usually not necessary for a septic system design since most installations can be handled by qualified septic installers who follow existing guidelines. Purchasing a specific brand of septic tank is also not a requirement; instead, it is more about ensuring that the tank meets safety and environmental standards, regardless of the brand. Finally, installing a backup generator is unrelated to septic system requirements and is typically more relevant in contexts where electrical supply is needed for other home systems.