I recently purchased a water pressure gauge and attached it to the hose hookup outside which is branched off the main line just after the water meter. I got a reading of 48 psi. This is on city water. When I flushed the toilet it went down to 20 psi and when I simultaneously ran the bathroom faucet it dropped to 8 psi. Is this a problem with inadequate pressure or is it low flow/volume and what can I do to fix it?
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Flow or Pressure Problem