Which type of disposal system is not considered standard?

The selection of drip irrigation as a non-standard disposal system highlights the distinction between conventional approaches and advanced technologies in on-site sewage systems. Conventional septic systems and leach trenches are widely recognized as standard practices, typically involving gravity-driven water flow and a series of defined components for treatment and disposal.

Drip irrigation, while an innovative method, is categorized as a more advanced system that requires specific design considerations, technology, and management practices to function properly. It involves applying treated effluent through a network of tubing and emitters, which necessitates a higher level of maintenance and expertise than standard systems. This method can be beneficial in certain contexts, particularly in areas requiring water conservation or where soil conditions are less favorable, but it may not be suitable or legal in all jurisdictions as a standard system.

Manual washout systems are generally seen as non-standard due to their reliance on manual labor and equipment, often lacking the efficiency and effectiveness of automated systems.