Which aspect is crucial for the overall installation of the underdrain in a sand filter system?

The critical aspect for the overall installation of the underdrain in a sand filter system is that it must comply with relevant appendices and specifications. Compliance with established guidelines ensures that the installation meets required standards for functionality and safety. These specifications may cover material types, dimensions, installation angles, and proper connections, which directly affect the effectiveness of the sand filter system in treating wastewater. Adhering to these guidelines helps prevent issues such as clogging, improper drainage, and system failure, ensuring the long-term performance and reliability of the sand filter system in managing sewage treatment.