To increase water pressure in your tap, you should first unscrewing the spout aerator and soaking it in white vinegar to dissolve clogging mineral deposits. Next, check the hot and cold supply shutoff valves under the sink to ensure they are fully open. If the low pressure affects only this tap, clearing the aerator usually fixes it. If it affects the whole house, the pressure-reducing valve (PRV) may need adjustment. Verification: Reassemble the clean aerator and test the tap to confirm normal water stream velocity.
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