Weak flow at one shower needs a different investigation from low pressure throughout a building. Compare a few taps and ask whether neighbours have noticed the same change. That gives a plumber or the water provider useful information about where to start, before you spend money on equipment that may not address the cause.
Compare a few taps
Try cold and hot water at more than one outlet. Note whether it's always weak, varies during the day or drops when another tap opens. Tell the plumber when it started and whether anything changed just beforehand.
If it's one shower, the head, hose or mixer may be involved. If it's only hot water, look at the heating side of the system. A pattern is useful evidence; it isn't a diagnosis on its own.
Ask next door
Check with immediate neighbours and the administrator. Several affected properties suggest a different investigation from one troublesome tap. For a wider issue, check AGAMED information or report what you're seeing.
For a possible leak, turn off normal water use and observe your own meter if it is clearly identified and safely accessible. AGAMED's help page explains domestic leak checks. Don't adjust a shared valve or booster system yourself.
Get measurements before buying a solution
A plumber should inspect the installation and supply conditions before adding equipment. Ask what the pressure and flow checks showed and why the proposed fix addresses them.
Community tanks and pumps need coordination with the administrator. A poorly chosen booster can create another problem—noise or imbalance—without removing the original restriction.
Before you go ahead
- You've compared hot and cold water at several outlets.
- You know whether neighbours have the same problem.
- You've checked for provider notices or reported a wider issue.
- You can describe when the change started and how it varies.
- Shared valves, tanks and pumps are being dealt with through the administrator.
Common questions
Will a booster pump fix low pressure?
Only after the cause, supply conditions and building rules are understood. An incorrectly selected pump can create noise, imbalance or installation problems.
Why is only the shower weak?
The restriction may be local to the shower head, mixer, hose or its branch. A plumber can distinguish it from a property-wide supply issue.
Sources and further reading
Official information checked on 12 October 2026. Rules and procedures can change; verify the live source for your exact circumstances.