6 Early Signs Your Adelaide Hills Drain Is Blocked (Before It Backs Up)

Blocked drains rarely happen overnight. The pipe narrows for weeks — sometimes months — before it gives up. Spot the early signs and you can clear it cheaply. Miss them and you'll be mopping up a flooded laundry.

The 6 signs to watch for

1. Gurgling sounds from the toilet or sink

Air escaping past a partial blockage. Always the first warning sign.

2. Slow draining shower or bath

Water taking more than 30 seconds to disappear from a shower base means restriction in the line.

3. Sewer or rotten egg smell from outside

Often the gully trap by the laundry wall. Could be a partial blockage or a dried-out trap.

4. Toilet water level changing on its own

If the bowl level rises after flushing another fixture, the main line is partly blocked.

5. Water pooling around outside drains in the garden

Tree-root incursion in clay sections is the most common cause in older Adelaide Hills properties — the mature gums and big established gardens up here are tough on terracotta drainage.

6. Multiple fixtures backing up at once

That's a main-line blockage — turn the water off and call. Don't keep using fixtures.

Why chemicals don't fix a real blockage

Drain chemicals dissolve hair and soap scum — fine for a sluggish basin. They will not cut tree roots, dislodge a wet-wipe build-up or fix a collapsed clay section. They also corrode older pipes and make a CCTV inspection harder to read.