Water Leak Under Sink in Orpington or Bromley? What To Do First
Open the cupboard. Everything’s damp. Maybe there’s a slow drip. Maybe it’s pooling at the back and you’ve only just noticed. Under-sink leaks are common across BR5, BR6 and Bromley — and most are simple to fix if caught early.
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Immediate Action (Before It Gets Worse)
There should be a small isolation valve on the hot and cold feeds. Turn them clockwise gently.
Especially if the leak appears when draining water.
Does it drip constantly? Or only when water runs?
Quick action prevents cabinet swelling and floor damage. If you want a general overview of what we handle day-to-day, see plumbing repairs.
Supply vs Waste Leak – The Difference Matters
Constant drip? Usually supply pipe or connector.
Only when draining? Likely waste trap or joint.
Around Orpington, braided flexi connectors are one of the biggest culprits — especially on older kitchen refits.
Common Causes I See
- Loose compression joint
- Worn rubber washer
- Split braided hose
- Cracked plastic trap
- Appliance waste pipe not sealed properly
In Bromley homes with older units, leaks sometimes go unnoticed until flooring starts to lift.
When It Needs a Professional
If water is spreading under cabinets or behind units, it’s safer to stop guessing.
If the leak is more serious and you’re seeing water leaking through ceilings, that needs quick damage control and proper tracing.
And if you’ve received a formal leak notice from Thames Water, the next steps and responsibility lines are different (especially if it’s a supply pipe issue).
For anything from small leaks to urgent tracing, start here: plumbing repairs in Orpington & Bromley (or visit the SKR Plumbing & Heating homepage).
About SKR Plumbing & Heating
I’m Stuart — sole trader covering Orpington & Bromley daily. You can see independent reviews here: Checkatrade profile .
24/7 availability. If I can’t answer immediately, I call back quickly. You can also return to the homepage any time.
Under Sink Leak FAQ
Can I tighten it myself?
Sometimes yes — but over-tightening plastic traps can cause cracks.
Is it an emergency?
If it’s minor, no. If water is spreading rapidly or near electrics, yes.
Will this increase my water bill?
Slow supply leaks can raise bills over time.
How fast can you attend?
Call 07706 889 614 — I cover BR5, BR6 and Bromley daily.
Related Leak Help (Same Area)
If your leak is coming from above, or you’ve been contacted by Thames Water, use these:
Still Dripping?
If tightening didn’t solve it, don’t let it damage cabinets.
Call 24/7 – 07706 889 614Or go back to the homepage / plumbing repairs.