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Drain smells & gurgling

Find out why foul odours and strange noises return.

Choose your drainage question

Read the relevant guide to understand the clues, alternatives and what a contractor should investigate.

An unsealed inspection cover, blocked gully or defective venting route can release odours outdoors.

An empty trap, faulty pan connector or poor waste ventilation can admit drain gases.

Air movement through a partially restricted pipe or inadequately vented waste can disturb a trap.

A restriction can alter flow and pressure, contributing to loss of trap water seals.

Heat can intensify odours, especially where organic deposits or standing wastewater are present.

A worn pan seal or cracked connection may leak odour without an obvious water puddle.

Start with the symptom you can see, rather than assuming an underground pipe is broken.