Mainline Drains
Drainage engineer inspecting a damaged drain pipe with CCTV camera

Slow Draining Sinks

A slow-draining sink is one of the most common early signs of a developing drainage problem. While a single slow sink might be a local blockage in the trap or waste pipe, multiple slow sinks suggest a deeper issue in your underground drainage system that needs professional investigation.

What to Look For

  • Water pooling in the kitchen sink during washing up
  • Bathroom basin taking minutes to empty
  • Water draining slower than it used to
  • Gurgling sounds when water finally drains
  • Multiple sinks draining slowly at the same time
  • Slow drainage that returns after cleaning the trap

How We Diagnose the Problem

We first check the trap and waste pipe for local blockages, then use CCTV drain surveys to inspect the underground pipework. Common causes include partial pipe collapses, tree root ingress, fat and grease buildup, or incorrect pipe gradients creating low points where water pools.

Think you might have slow draining sinks? A professional inspection will confirm the diagnosis.

How We Fix It

Local blockages are cleared quickly with rodding or jetting. For underground causes, we use high-pressure jetting to clear buildup, relining to repair cracked or root-damaged pipes, or excavation for collapsed sections. We fix the root cause so your sinks drain properly long-term.

How This Issue Is Normally Diagnosed and Repaired

Follow the typical path from problem identification through to resolution:

  1. 1Blocked Drains Service
  2. 2Tree Roots in Drains
  3. 3CCTV Drain Survey Cost
  4. 4Relining vs Excavation
  5. 5Drain Repair Cost
  6. 6Get a Free Quote →

Need a Professional Inspection?

If you're experiencing persistent issues, don't wait for the problem to worsen. Our engineers use proven methods to diagnose accurately. Call for emergency response or book a scheduled inspection.

Sinks draining slowly? Book a drainage inspection to find out why.

Slow Draining Sinks FAQ

What are the signs of slow draining sinks?
Water pooling in the kitchen sink during washing up. Bathroom basin taking minutes to empty. Water draining slower than it used to.
How do you diagnose slow draining sinks?
We first check the trap and waste pipe for local blockages, then use CCTV drain surveys to inspect the underground pipework. Common causes include partial pipe collapses, tree root ingress, fat and gr...
How do you fix slow draining sinks?
Local blockages are cleared quickly with rodding or jetting. For underground causes, we use high-pressure jetting to clear buildup, relining to repair cracked or root-damaged pipes, or excavation for ...

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