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    plumbing troubleshooting

    Low water pressure (single fixture)

    Common symptoms: weak water flow; low pressure; one faucet slow; shower weak

    Stop and call a pro if:

    • water near electrical devices

    Step-by-step diagnostic flow

    1. Step 1

      Is water present near electrical outlets/devices?

    2. Step 2

      Is the low pressure on hot, cold, or both at that fixture?

    3. Step 3

      Observe the faucet stream pattern (smooth vs spraying). For showers, note if spray is uneven.

    Possible outcomes

    Stop and seek professional help immediately

    high confidence

    Potential electrical hazard.

    Restriction likely on hot side to fixture

    medium confidence

    Only hot side affected.

    Safe next steps
    • Note if other fixtures have hot-side issues
    • Photograph under-sink supply lines/valves (no adjustments)
    What to document for a pro
    • Fixture brand/model if visible
    • Supply line photos

    Restriction likely on cold side to fixture

    medium confidence

    Only cold side affected.

    Safe next steps
    • Note if other fixtures have cold-side issues
    • Photograph under-sink supply lines/valves (no adjustments)
    What to document for a pro
    • Fixture brand/model if visible
    • Supply line photos

    Possible aerator/showerhead clog

    high confidence

    Abnormal spray pattern suggests blockage.

    Safe next steps
    • Photograph spray pattern and fixture head
    • Note recent water quality changes (discoloration, sediment)
    What to document for a pro
    • Fixture model
    • Water quality notes
    • Spray pattern photos

    Further professional diagnosis recommended

    low confidence

    Non-invasive checks inconclusive.

    Safe next steps
    • List affected fixtures/sides
    • Note time-of-day pattern
    What to document for a pro
    • Fixture list
    • Pressure pattern notes
    Diagnostic guidance only. If unsure, stop and call a licensed professional — gas, electrical, and refrigerant work is hazardous to untrained users.

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