When water pressure is low inside your home but completely normal at outdoor hose bibs, the issue is almost always localized to interior plumbing components rather than the main municipal supply line. Common culprits include clogged or mineral-scaled faucet aerators, a partially closed individual fixture shut-off valve under a sink, a failing pressure reducing valve (PRV) that regulates interior lines, or a clogged whole-house water filter cartridge. Because outdoor spigots bypass indoor filters and specific branch lines, they maintain normal pressure. Verification: Unscrew and inspect faucet aerators for trapped sediment or mineral debris.
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