What do you call the local regulations governing septic systems?

Local regulations governing septic systems are referred to as local ordinances or county regulations. This is because septic systems are typically managed at the local or county level to account for the unique environmental conditions and land use practices of that specific area. These regulations can vary significantly from one locality to another, influenced by factors such as population density, soil types, and water table levels.

In contrast to local ordinances, state laws provide a broader framework that can dictate general standards for septic systems but do not dive into the specific requirements or guidelines applicable to individual communities. National guidelines and international standards, while they may provide a high-level understanding of septic system principles, are not specific to local contexts and do not replace the detailed, localized approaches mandated by towns and counties. This localization is essential to ensure that septic systems are designed, installed, and maintained in a manner that is suitable for the local environmental conditions and public health needs.