GerardBlocked drains are a common plumbing issue in Australian homes. Whether it’s water sitting in the kitchen sink, bad smells from the bathroom, or a toilet that suddenly won’t flush properly, clogged drains can quickly turn into a big issue.
Many drain blockages start small and slowly worsen over time. The earlier you act, the easier and cheaper it is to fix the problem.
While smaller blockages can be fixed at home, bigger issues should always be handled by a professional plumber. Knowing when to try a DIY approach and when to call in help can save you money, time, and a lot of stress.
Keep reading to discover simple, effective ways to clear a blocked drain and get your home flowing smoothly again.
What to Look for When You Suspect a Blocked Drain
Before a drain becomes fully blocked, you may realise some early warning signs. Paying attention to these early hints can help you address the issue before it becomes a big problem.
Slow-draining water in sinks
If water is taking longer than usual to drain, it may indicate a blockage in the pipe. This is commonly caused by hair, grease, or soap scum building up over time and hanging onto pipes.
Gurgling sounds coming from drains or pipes
Gurgling noises often occur when trapped air pushes through water due to a clog in the pipe. These sounds from your sink, shower, or toilet usually indicate that a blockage is slowing water flow.
Foul smells are coming from sinks or floor drains
Bad smells are among the most obvious signs that something isn’t right. Rotting food, grease build-up, or sewer gases backing up can all cause unpleasant smells inside your home.
Water pooling around fixtures or outdoors
Water pooling near your shower drain, around your garden, or near outdoor drains can indicate an underground blockage. This is especially common during wet weather when stormwater drains struggle to cope.
Toilet water rising or bubbling when you flush
If your toilet water rises higher than usual or you see bubbling in the bowl, it means the drain line is struggling to remove wastewater. Toilet blockages can escalate quickly, so don’t ignore this sign.
Common Causes of a Blocked Drain
Knowing what typically causes blocked drains can help you prevent them in the future. Most blockages are caused by everyday habits or natural issues underground.
Fat, oil, and grease (FOG) buildup in kitchen drains
These are among the biggest offenders in kitchens. When washed down the sink, these substances cool, harden, and cling to the inside of your pipes. Eventually, the FOG will create a thick, sticky layer that traps food particles and debris.
Hair and soap scum in bathroom drains
Showers and bathroom sinks often clog due to a mix of hair, toothpaste, soap residue, and skincare products. Over time, they bind together and form stubborn blockages.
Wet wipes, sanitary products, and foreign objects
Even “flushable” wipes aren’t truly safe for your plumbing. Items like makeup wipes, baby wipes, sanitary pads, cotton buds, and nappies don’t break down in water and quickly cause blockages.
Tree roots cracking or invading underground pipes
“I snaked the drain … ended up still needing a plumber. Dude camera’d the line. It was tree roots starting at 67’.” Reddit.
Tree roots naturally seek out moisture, making your pipes an easy target. Once they find a small crack or joint, they invade the pipe and continue growing, causing significant long-term damage.
Food scraps and coffee grounds clogging kitchen pipes
Leftover food, eggshells, pasta, rice, and coffee grounds don’t break down easily. They get stuck and contribute to thick build-ups inside kitchen drains.
Different Types of Blocked Drains
Not all blockages are the same. Understanding the type of drain that’s blocked can help you choose the right solution.
Kitchen sink blockages
Usually caused by grease, food scraps, and coffee grounds. Sink blockages often start with slow drainage and eventually lead to standing water.
Bathroom and shower drain blockages
Commonly caused by hair, soap residue, and cosmetic products. Bathroom and shower drains often produce smells and slow drainage.
Toilet blockages
Often caused by wipes, sanitary products, too much toilet paper, or foreign objects. Toilets are the quickest to overflow, so act fast if you notice issues.
Outdoor stormwater or sewer drain blockages
Leaves, dirt, and tree roots often clog outdoor drains. These blockages can cause flooding around your home, especially during heavy rain.
Main sewer line blockages
If multiple drains in your home are backing up at once, the main sewer line may be blocked. This is a serious problem that requires immediate professional attention.
Ways to Clear a Blocked Drain
Some blockages can be cleared with simple at-home methods. Before you call a plumber, try one of these safe DIY approaches.
Hot water and dish soap for grease blockages
This method works exceptionally well in the kitchen. Pouring hot water (not quite boiling water) mixed with dish soap down the drain can help break up grease and loosen soft blockages. Let it sit for a few minutes, then flush with more hot water.
Plunging to dislodge soft blockages
A plunger creates pressure that can dislodge debris. Make sure you cover any overflow holes first for better suction. Plungers are effective for sinks, toilets, and showers.
Drain snakes and plumbing augers
A drain snake is a long, flexible tool used to break up deeper clogs. Manual snakes are suitable for minor blockages, while larger augers are ideal for more challenging clogs. As one Reddit user advised:
“Just a plunger already… they are literally made for this.” Reddit+1
Natural cleaners (baking soda + vinegar)
A popular DIY method is pouring a cup of baking soda down your drain, followed by vinegar. This combines as an acid-base reaction that can help break up gunk. Then flush with hot water.
One Reddit thread explained:
“Pour hot water in first, then baking soda, then vinegar and let it sit for about 5 minutes, then hot water to flush it.” Reddit
But also:
“Baking soda + vinegar will do literally nothing below the surface of the clog…” Reddit+1
So while suitable for maintenance and mild blockages, this method may not work for severe clogs.
Avoid chemical drain cleaners (unless absolutely necessary)
While chemical drain cleaners can dissolve organic matter, they often come with risks — pipe corrosion, fumes, and environmental impact. Reddit users often caution:
“The granulated stuff really blocks up in there.” Reddit
When to call a plumber for high-pressure jetting or camera inspections
If the above methods don’t work or your drains keep blocking, it’s time to call a professional plumber. They use specialised tools such as:
- CCTV drain cameras to locate the blockage and identify the cause.
- High-pressure water jetters to blast away tree roots, grease, and debris.
- Electric drain machines for stubborn underground blockages.
As one Reddit contributor put it:
“If you’ve already tried removing the trap and cleaning it… then use pressure.” Reddit+1
How to Stop Drains from Getting Blocked
Preventing blockages is far easier than fixing them. Simple habits and regular maintenance can save you hundreds in future repairs.
Regularly clean and flush your drains
Running hot water through your drains weekly can help prevent buildup. For example, one Reddit tip suggested pouring hot water down the drain periodically to flush organic matter. Reddit
Avoid pouring fats, oils, and grease down the sink
Instead of washing grease down the drain, let it cool, scrape it into a container, and bin it. This prevents the clog from forming inside the pipe.
Install drain strainers in sinks and showers
Strainers catch food, hair, and other debris before they enter your pipes. They’re inexpensive and one of the easiest ways to prevent blockages.
Properly dispose of wipes, sanitary items, and nappies
Nothing other than toilet paper should be flushed. Place a bin in your bathroom to dispose of these items safely.
Book routine plumbing maintenance for older homes
If you live in an older property, the pipes may be more prone to damage or root intrusion. Annual maintenance can catch issues early and prevent costly repairs.
The Smart Way To Clear a Blocked Drain at Home
Blocked drains can be messy, frustrating, and even damaging if left too long. Many minor blockages can be fixed with simple at-home methods. Techniques such as pouring hot water, using soap or dishwashing liquid, trying baking soda down the drain followed by vinegar, or manually cleaning the kitchen sink or p-trap can help significantly.
However, if your drains keep backing up, multiple fixtures are blocked at once, or your DIY solutions just aren’t doing the trick, it’s time to call a professional plumber.
Need a fast, reliable blocked-drain plumber in Perth? G.X.R Plumbing offers same-day service, no call-out fees, and over 20 years of local experience clearing drains of all types.
