Since I am not designing a fire flow, I feel that there is no need to be overly conservative and do not want to un-necessarily oversize the pipe. To estimate the peak flow, I started the same way I would estimate peak sewer flows: 50 units x 100 gpd = 5,000 gpd (or 3.5 gpm)...
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If your well flow rate is very poor, one option is to install a larger or multiple water tanks used not just for pressure regulation but for water storage. WELL FLOW RATE - how we determine just how much water a well can deliver and at what rate (gpm), and WELL YIELD IMPROVEMENT - ...