Delaware Administrative Code
Title 1 - Authorities, Boards and Commissions
700 - Delaware State Fire Prevention Commission
702 - Fire Protection in Building Construction
Chapter 7 - Minimum Requirements for Water Suppliers
Section 702-7-3.0 - Minimum Duration

All water suppliers covered under the provisions of this Chapter shall provide a water supply capable of the minimum flow of 500 GPM at a residual pressure of at least 20 PSI for at least two (2) hours. Where the water supply serves only one and two-family dwellings, it shall be capable of the minimum flow of 500 GPM at a residual pressure of at least 20 PSI for at least one (1) hour.