N.H. Code Admin. R. Env-Dw 405.12
Peak flow shall be calculated as design flow times the multiplier in Table 405-1 with the number of residential-equivalent units being calculated in accordance with Env-Dw 405.06(a)(9)a.:
Table 405-1: Peak Flow
Number of Residential Service Connections or Residential-Equivalent Units
Peaking Factor (Peak Flow / Design Flow)
Less than 50
10
50 to 99
9
100 to 149
7
150 to 199
5
Greater than 200
4
Source. #14158, eff 12-25-24