What Causes Blocked Drains: Five Common Reasons?


Blocked drains are the most common issue that almost all of us face in our lives. Few have this problem more frequently, while others face this trouble very rarely. This is a severe issue for its underlying hazards.

If you have blocked drains at your home or your workplace, stop worrying and call blocked drains Sydney. They will professionally handle the issue in a short time at an affordable price. Trust me! This is the best option available; delays and worries will only increase the intensity of the trouble, nothing else.

Water is one of the most dangerous fluids for damaging construction material. Therefore, Engineers and expert workers make special efforts to develop an efficient drainage system in the buildings. Water is the most common cause of the corrosion, and once an object starts to erode, it is costly to protect it. In our buildings, metal is used as a basic construction material. Columns and slabs are built with a higher percentage of metal in them. The blocked drain line is the main reason for water to interact with the building material. If water makes contact for a longer period, it starts to erode the building material and ultimately damages it completely. Hence a good drainage system is the priority of a good engineer.

Stagnant water is a health threat, and blocked drains are the main reason for this problem. Many health organizations and hygiene experts advise avoiding still waters near your home or workplace. The main purpose is to avoid all sorts of health issues that are caused by these standing water pools. Standing waters are the main sources that give birth to mosquitos. There are so many illnesses that spread and originate from mosquitos like, Dengue, and Malaria. Hence, it is important to avoid stagnant waters near and inside your house.


Knowing the entire hazards that a blocked drain can cause, it becomes compulsory to know the reasons for blocked drains. This will help to avoid stagnant water pools and water contact with your building material. The reasons mentioned forth are the most common and important ones. Therefore, attentive and thorough reading is a must to understand these reasons in-depth.

1. External Objects

External objects are one of the main causes of blocked drainage. It happens that sometimes soap or a comb slips from our hands into the drainage pipe. Few people take quick action and using any stick or curve wire brings out that external object. However, most of us do not pay much attention to it and leave it inside there to bring it out later on. This is a big mistake. What happens that the external object starts to gather hairs or other fats around it and eventually creates a blockade. Only at that moment we then come to know, we did this through our carelessness.

This reason more common for one more reason. Mostly, children put external stuff into the drainage line, and they keep this secret. They fear that if they tell their parents, they will scold them or beat them. Therefore, they hide this thing, and later, it results in blocked drains.

2. Broken Pipes

The drainage pipelines go underground to the main drainage line. Sometimes, it happens that a digging work in the yard or near your house or workplace breaks or squeezes drainage pipelines. The drainage water comes to this point in the pipeline and stops here. At the start, a small amount of water may pass through this broken pipeline point; however, later on, it completely blocks down. Hair and toilet papers or other such stuff starts to accumulate there and completely stops the water passage.

3. Heavy rain showers

The capacity of the drainage pipelines is limited; they can work well with limited amounts of water. In heavy rain shower, an excessive amount of water enters the drainage line. This reduces their performance and results in their blockage. The rainwater brings other external stuff with it like, leaves, plastics, and other such stuff. Once they enter into the drainage pipe, they create a hindrance to water passage. This is only a specific condition and rarely happens only on rainy days. Moreover, those drainage lines, which are not well maintained, may get blocked due to rainwater. Therefore, it is advised to check and maintain drainage pipelines on a timely basis.

4. Installation issues

Always remember to hire only expert services while installing the drainage system at your home or workplace. Unskilled and inexperienced workers are also the main reason for blocked drains. If the joints at corners and extensions are fitted wrong, your drain system will tease you more frequently. Only professionals know how to install these joints so that the drains system performs well.

The height and inclinations are also important to note. If your drainage pipe is too flat, then it more prone to blockage. The water flow in flat pipelines is slow, and this results in settling of dust and sand in the drain. Ultimately, sometimes later the installation, your drains start to block.

5. Grease

Grease and other non-polar elements like fats and oil may also cause a blockage in the drainage pipelines. The rules of science say that polar and non-polar substances do not interact with each other physically. Water is a polar substance; it is not efficient to interact with oils and fats. If you put fats and oils into the drain, water will only strike them but fails to remove them from the drain line completely. Therefore, the fats and grease that accumulate in the drain is the main cause of blocked drains. Therefore, it beneficial to avoid putting more fats and oils stuff into the drainage lines for their smooth functioning.


A smooth functioning drain is essential to protect your house, and workplace buildings from water caused damages. Moreover, stagnant water is a health threat; Malaria and Dengue spread from still waters. Only perfectly working drains will avoid stagnant waters. External objects, broken pipelines, heavy rain showers, installation mistakes, and grease are the main reasons for blocked drains.

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