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5 Common Causes of Clogged Drains

04/13/2026

 

Audiznam260921 | Shutterstock

Shutterstock | audiznam260921 

5 Common Causes of Clogged Drains 

Dealing with a sluggish or completely blocked drain is a frequent source of frustration for many homeowners across the Metro Detroit area. While a slow sink might seem like a minor inconvenience at first, our staff often discovers that these symptoms point toward more significant complications deep within the plumbing infrastructure. Our team at Best Plumbing has spent over 40 years identifying these issues in homes in Southern Oakland and Wayne County, and we recognize that understanding the primary culprits is the first step toward maintaining a healthy system. While some minor surface clogs can be addressed quickly, many blockages indicate a need for professional intervention to prevent long-term damage to your pipes and sewer lines.

Household Buildup in Kitchen and Bathroom Drains

The kitchen is often the heart of the home, but it is also a primary location for stubborn blockages caused by cooking byproducts. When fats, oils, and grease are poured down the sink in liquid form, they eventually cool and solidify inside the pipes, forming a thick, sticky coating. This buildup acts like a magnet for passing food particles, gradually narrowing the passage until water can no longer flow through. Our technicians recommend that homeowners always scrape their plates directly into the trash and avoid pouring any liquid grease down the drain to prevent these heavy obstructions from forming.

Hair Buildup and Soap Scum

In the bathroom, the combination of hair and soap scum creates a particularly difficult type of blockage that our team encounters daily. As hair falls down the drain, it often becomes entangled with the sticky residue left behind by traditional bar soaps and mineral deposits. This creates a dense net that traps other debris and slows drainage in sinks, tubs, and showers. To protect your plumbing, we suggest using high-quality drain strainers to catch hair before it enters the pipe system.

Mineral Buildup and Internal Scaling

Over many years of service, your pipes can accumulate significant internal scaling from the mineral content of the local water supply. This process involves the gradual deposition of calcium and other minerals on the interior walls of the plumbing, which effectively reduces the pipe’s diameter. As the opening narrows, it becomes much easier for even small amounts of debris to get caught and cause a complete backup. This is a common issue in older properties throughout the Down River area, where original piping may still be in use.

External and Structural Obstructions

One of the most frequent causes of sewer line backups that our staff addresses involves the disposal of items that do not belong in the plumbing. Despite being marketed as safe for sewers, so-called flushable wipes do not break down like toilet paper and often snag on pipe joints or existing debris. Additionally, our technicians frequently find foreign objects, such as small toys, that have been accidentally flushed, resulting in immediate and severe blockages that require specialized tools to remove safely.

Tree Roots Intruding Into Sewer Lines

For many homeowners in the Metro Detroit area, the most serious drainage issues occur outside the home where tree roots seek out moisture. Even the smallest crack in a sewer pipe can allow thirsty roots to enter, where they grow rapidly in the nutrient-rich environment. This is a common seasonal issue in spring and fall, when root growth is most active, often leading to massive underground blockages that affect the entire household.

Professional Drain Solutions in Southern Oakland and Wayne Counties

Knowing when to move beyond a simple plunger is key to protecting your property from water damage. If you notice recurring clogs that return shortly after you clear them, or if you experience multiple slow drains and foul odors at the same time, it is time to seek expert assistance. Our team utilizes advanced diagnostic equipment to locate deep-seated clogs that standard DIY methods simply cannot reach. We take pride in our status as a family-owned business with an A+ BBB rating, ensuring that every customer in Southeastern Michigan receives honest and quality workmanship. If your plumbing system is struggling to keep up with your daily needs, reach out. We’re ready to help and restore your home to peak performance.