"Flow mix" means a treatment technique where the flow of water from one or more sources having a particular contaminant exceeding an MCL is combined with flow from one or more different sources with that contaminant below the MCL, so that the resultant flow is reliably andconsistently below the MCL for that contaminant.
N.H. Admin. Code § Env-Ws 302.31
#8498, eff 11-30-05