A blocked drain can start with something as simple as water taking a little longer to disappear from your sink.

Ignore it for long enough, however, and that slow drain can turn into standing water, terrible smells or wastewater coming back into your home.

Understanding why drains block can help you catch the problem before it becomes a major plumbing headache.

What Causes Blocked Drains?

Different drains tend to develop different problems.

Kitchen drains often become blocked by grease, oils, food scraps and other waste. Grease may enter the drain as a liquid but can cool and stick to the inside of the pipe.

Bathroom drains usually collect hair, soap residue and other debris.

Outside the home, soil, leaves and tree roots can also interfere with drainage systems.

There is also one simple rule worth remembering: toilets are designed for toilet paper and human waste. Wipes, sanitary products and other objects can create serious blockages.

Warning Signs That a Drain Is Becoming Blocked

A complete blockage rarely appears without warning.

Look out for:

• Water draining more slowly than usual
• Gurgling noises
• Unpleasant drain smells
• Water backing up into sinks or showers
• Toilets struggling to flush properly
• Several drains becoming slow at the same time

If several fixtures are affected, the blockage may be further down the drainage system.

Why Does the Blockage Keep Coming Back?

If you clear a drain only for the same problem to return a few days or weeks later, the original blockage may never have been completely removed.

There could also be a problem deeper in the pipe.

Professional drainage equipment can reach areas that basic household plungers and drain cleaners cannot.

For more stubborn buildup, professional water jetting may be used to clean the inside of drainage lines and remove accumulated waste.

Be Careful With Chemical Drain Cleaners

Pouring strong chemicals into your plumbing every time a drain becomes slow is not a good long-term solution.

They may not remove the full blockage and can be harsh on certain plumbing materials.

A professional plumber can identify what is blocking the drain and choose the correct method to clear it.

Stop a Slow Drain From Becoming a Complete Blockage

If your drains are becoming slower, making strange noises or developing unpleasant smells, don’t wait until water starts backing up.

LOUW BROS provides professional drainage and plumbing services in Cape Town and can help identify and clear stubborn blockages properly.

Take care of the problem while the water is still moving — not after it stops completely.