What category does intermittent sand filters fall under in the Department of Health's list of treatment technologies?

Intermittent sand filters are classified under Category 1 in the Department of Health's list of treatment technologies because they are designed for the treatment of wastewater through physical and biological processes. These systems utilize natural processes to effectively remove contaminants from sewage, which aligns with the standards established for primary treatment. Category 1 technologies are recognized for their reliability and effectiveness in reducing pollutants to acceptable levels, making them suitable for certain applications where simple and efficient treatment methods are needed. This classification emphasizes the importance of using established methods that meet the public health standards required for proper wastewater management.