What defines an alternative system in wastewater management?

An alternative system in wastewater management is characterized by design modifications that are implemented to comply with required setbacks and possibly other regulations. Such modifications are often necessary when standard practices cannot be applied due to specific site conditions, such as the presence of high water tables, rocky terrain, or proximity to bodies of water. This flexibility allows for tailored solutions that ensure effective wastewater treatment while adhering to environmental protection standards.

In contrast, the first option describes a conventional system, which typically follows established designs without alterations. The second option implies that a system can operate without oversight from regulatory bodies, which is not the case for alternative systems that often require permitting to ensure they meet health and safety standards. The last option refers to systems that are no longer operational, which does not relate to the definition of an alternative system that actively manages wastewater.