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Blocked drain symptoms tell you where to start, but recurring faults need evidence. Restore safe flow first, then use CCTV and locating when roots or pipe damage may change the repair decision.
What the sewer system carries
Sewer drains carry wastewater from toilets, bathrooms, laundries and kitchens. Signs of a blockage include gurgling fixtures, an overflowing relief gully and sewage returning through low drain points.
What the stormwater system carries
Stormwater drains carry rain from roofs, pits, grates and outdoor surfaces. Problems often become obvious during rain when pits fill, downpipes overflow or water pools around the property.
Why the distinction matters
The two systems have different access points, contents and risks. Describing when the problem happens and what kind of water is appearing helps identify which line needs attention.
Common stormwater restrictions
Leaves, soil, silt, roots, collapsed pipes and inadequate access can reduce flow. A clean may solve debris; structural damage needs repair.
Common sewer restrictions
Waste build-up, grease, wipes, foreign objects, roots and damaged joints are frequent causes. Several indoor fixtures failing together often point farther downstream.
When mapping helps
If plans are missing or connections are unclear, CCTV and locating equipment can help trace routes and identify where the fault sits.
Need help with the drain?
Johnny Drains provides 24/7 blocked drain clearing, CCTV inspections, high-pressure jetting, pipe relining and targeted repairs across the Northern Beaches and Lower North Shore.
