7 Signs Your Commercial Drain Is Backed Up

Hurley Plumbing • April 18, 2025

Drain problems can quickly go from a small issue to a serious disruption. In commercial spaces, a backup can lead to downtime, damage to property, and even health concerns. The good news is that most drains give off warning signs before things get worse.


At Hurley Plumbing, we help businesses throughout Western Massachusetts stay ahead of drain issues with responsive service and routine maintenance. These are seven common signs your commercial drain may be at risk of backing up.



Top Signs To look out For

Commercial Plumbing services MA


1. Multiple Fixtures Draining Slowly


If several sinks, toilets, or floor drains are draining slower than usual, the problem is likely deeper in the system. This often means there is a blockage forming in the main drain line rather than a small clog in one area.


It is important to take action early. A slow drain may not seem urgent, but it can quickly become a larger and more costly problem if left unchecked.


2. Gurgling or Bubbling Sounds


Unusual sounds coming from your drains or toilets can be a sign of trouble. Gurgling and bubbling noises often happen when air is trapped in the pipes due to a blockage.


As water pushes past the clog, it creates pressure that forces air back up through the drain. These sounds are often one of the first signs that something is not working as it should.


3. Unpleasant Smells Coming from Drains


Strong or musty odors around your drains, kitchen areas, or restrooms are a clear warning sign. These smells often come from grease, waste, or buildup that is stuck in the pipes and not moving through the system.


Aside from being difficult for staff and customers to tolerate, bad smells can also indicate that a backup may be approaching.


4. Clogs That Keep Coming Back


If you are clearing the same toilet or sink again and again, it is probably more than just a minor clog. Recurring blockages suggest there is a buildup deeper in the drain line that needs professional attention.


Rather than rely on drain cleaners or plungers, it is best to have a licensed plumber investigate and clear the source of the problem.


5. Water Pooling Around Floor Drains


Floor drains should help remove water, not hold it. If you start noticing water gathering around these areas during normal operations or after cleaning, it is a sign that your system may be reaching its limit.


Once water starts pooling or rising back up, you are likely very close to a full backup. This is the time to act.


6. Water That Moves in the Wrong Direction


Some drain issues are easier to spot than others. Keep an eye out for these warning signs:

  • Water rising in a floor drain when a nearby sink is running
  • Toilets bubbling while another drain is in use
  • Sinks filling with water when a dishwasher is operating


These patterns often mean your drainage system is under stress and cannot keep up with demand.


7. Drain Problems After Rainstorms


If your building experiences drain trouble after heavy rain, excess water may be entering the sewer system and pushing back into your lines. This can happen in older buildings or areas with outdated drain systems.


If you notice repeated issues after storms, a professional inspection can help determine the cause and prevent future problems.


Call Hurley Plumbing Before the Problem Grows


Clogged drains rarely happen without warning. By paying attention to the signs, you can avoid water damage, plumbing repairs, and service interruptions. At Hurley Plumbing, we provide expert commercial drain cleaning and ongoing maintenance to keep your business running without delays.


If you’re searching for "commercial plumbers near me," look no further. If you are noticing any of the signs listed above, reach out to schedule a drain inspection today. We are ready to help you stay ahead of the problem.



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