Low water pressure
easy 20–60 min
Tools: adjustable pliers, old toothbrush, small bowl, pressure gauge with hose thread (optional) · Materials: white vinegar, replacement aerators or shower head (if clogged beyond cleaning)
Steps
- Check whether the problem is one fixture or the whole house — run the kitchen tap, a bathroom tap and an outdoor tap and compare.
- For one fixture: unscrew the aerator or shower head, soak it in vinegar for 30 minutes, brush out the mineral scale, and refit it.
- For the whole house: confirm the main shut-off valve is fully open — gate valves need to be turned all the way anticlockwise.
- If you have a pressure regulator near the main valve, screw a hose-thread gauge onto an outdoor tap; a healthy home reads roughly 40–60 psi (2.8–4 bar).
- Ask a neighbour whether their pressure dropped too — a utility or mains issue is not yours to fix.
Stop and call a pro if
- pressure dropped suddenly and you find damp patches, a running meter, or the sound of water with all taps closed — that is a leak
- the pressure regulator is set correctly but the gauge reads under 30 psi
- your home has galvanised steel pipes older than 40 years — they close up from the inside
What a pro does that you can't
A plumber tests pressure at the meter and at fixtures to locate the restriction, replaces a failed regulator, and quotes a repipe when old galvanised lines are the cause.
DIY cost: $0–30 for vinegar, an aerator or a gauge