Knowing when to call for emergency drain unblocking is crucial for maintaining a healthy plumbing system. Here are the top 5 signs that you need immediate intervention: 1) Slow Drainage: A slow-moving drain could be an early warning sign of a serious clog. 2) Bad Odor: Foul smells emanating from your drain are usually an indicator of accumulated waste. 3) Gurgling Noises: Unusual sounds can mean that air is trapped in your pipes due to a blockage. 4) Flooding: If you experience water or sewage backup, it’s a definite sign of a blocked drain. 5) Multiple Clogged Fixtures: If more than one fixture is clogged, it may signify a more serious, systemic issue. At Belfast Drains, we offer 24/7 emergency drain unblocking services to tackle these issues head-on.