1 Del. Admin. Code § 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.
Notes
25 DE Reg.
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