Stormwater Pits & Drainage
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Tree roots chasing water
Tree and plant roots are one of the biggest reasons stormwater pipes block up. In our hot summers and dry spells, roots actively chase moisture and often find their way into joints, cracks and breaks in the drainage system. They can quietly grow inside the pipes for months or years before you notice a problem at the surface. A yearly CCTV drain camera inspection of your stormwater system is a smart way to catch root intrusion early and avoid major damage when the next big storm hits.
Damaged stormwater pipes
Stormwater lines are usually not buried as deep as sewer or water pipes, which makes them more vulnerable. Over time, ground movement, vehicle loads over driveways and landscaping works can crush, crack or dislodge pipes. Once that happens, water can’t flow properly, debris hangs up on the damaged sections, and blockages become a regular occurrence.
Environmental build-up
Leaves, dirt, sand, mulch, bark, sticks and small rocks are constantly being washed across driveways, paths, roofs and lawns. In heavy rain, all of this gets carried straight into pits and pipes where it settles and builds up. Over time, it restricts flow and eventually blocks the system.
It’s a good idea to check your stormwater grates and pits after major rain so you can remove visible build-up before it becomes a bigger issue underground.
Rubbish and debris
Litter, packaging, plastic, and other rubbish left around the property can easily be washed into stormwater pits and pipes. Once inside, these items can snag on pipe joints or grates and help form stubborn blockages.
Incorrect or illegal connections
Sometimes the problem isn’t what’s in the pipe, but where the pipe actually goes. We often find stormwater lines that are not connected to a proper discharge point, simply disappearing into the ground, or in the worst cases, illegally connected into the sewer. These setups cause ongoing blockages, flooding, and can create serious compliance issues.
If you suspect your stormwater pipes aren’t connected correctly, or they constantly block up, contact Prolific Plumbing. We can trace the system, identify incorrect or illegal connections, and design a compliant, long-term solution that actually moves water away from your property instead of straight into trouble.
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Slow or overflowing downpipes
If rainwater is backing up and taking a long time to disappear through your downpipes, or you see water spilling out over the top during heavy rain, it usually means the stormwater pipes or pit further down the line are struggling or blocked.
Cracks and movement around drains
Cracks around stormwater pits, drains or nearby concrete can be a sign that tree roots have made their way into the pipes and started to push and shift things out of place.
Bad smells after rain
If you notice an unpleasant odour around stormwater grates or pits, it can be caused by leaves, soil and other organic matter sitting in stagnant water and breaking down inside the pipes. Warm, damp conditions can also encourage mould growth, which is another hint that water isn’t draining away properly.
Pooling water and soggy patches
Flooding or puddles near stormwater pits, inspection points, driveways or paths are a classic sign of blockages. In the garden, constantly wet or boggy patches around stormwater grates or lines can mean water is building up in the soil because it has nowhere to go.
If you’re seeing any of these signs, your stormwater system may already be blocked or partially blocked. Prolific Plumbing can inspect, clean and repair stormwater pits and pipes so the next downpour flows away from your home, not into it.

