Why Do I Need an On-site Wastewater Treatment System (Type 4.02 – 4.23 General Permit)?

This permit is for septic systems with flows from 0 to 24,000 gallons per day, including standard on-site and alternative systems. They are most commonly used in residential application. However, they may be used in light commercial applications including schools, RV parks, strip malls and small subdivisions. Almost any facility that needs to dispose of wastewater flows associated with typical sewage where sewer is not available (or is covered by an Individual APP). This permit is valid for the life of the facility.