Water appearing where it shouldn't is never a good sign. However, it doesn't always mean the same underlying problem. A blocked drain and a burst pipe can look similar at first. Both can involve standing water, a bad smell, or a damp patch. Yet they need completely different responses. Getting this right matters. Calling the wrong specialist, or trying the wrong fix yourself, wastes time while the damage keeps building.
Start with where the water is coming from
A blocked drain almost always shows itself at a fixture. That might be a sink, toilet, bath, or an external gully that's slow to empty or backing up. The water you see is already waste water, not fresh supply. It's coming back up a pipe designed to carry it away, not appearing from nowhere.
A burst pipe behaves differently. Because it's usually clean mains water, the water appears somewhere with no obvious route, often from a wall, ceiling, or floor with no fixture nearby. If you're looking at a damp patch spreading with no drain or plughole nearby, think pipe, not blockage.
Smell is a genuinely useful clue
Blocked drains smell, because decomposing waste sits in a pipe that isn't draining. A burst pipe, carrying clean supply water, generally doesn't smell at all. The only giveaway is the general dampness of water sitting somewhere it shouldn't.
How fast the problem is getting worse
A blockage tends to develop gradually, with slower draining over days before it stops completely. However, a burst pipe is usually sudden: dry one moment, then actively leaking or flooding the next. It keeps getting worse until you isolate the water supply.
What to check yourself, safely
- **For a suspected blockage:** check whether more than one fixture is affected. Several backing up together usually means a shared drain problem needing drain unblocking or drain jetting, not something a single plunger will fix.
- **For a suspected burst pipe:** find your stopcock (usually under the kitchen sink or near where the mains enters the property) and know how to turn it off. If you're not sure whether a leak counts as an emergency, our emergency plumber guide covers what does and doesn't.
- **For a leak with no obvious source:** if your water bill has crept up, or you can hear or feel dampness with no visible pipe damage, that's more likely a hidden leak than either a blockage or an obvious burst — leak detection finds it without digging up your floor on a guess.
When it's genuinely both
Occasionally, a long-standing blockage puts enough pressure on a pipe to crack it, or separate a joint. As a result, a drainage problem left too long can turn into a leak problem too. This is exactly what a CCTV drain survey is for. It shows whether a blockage has caused structural damage, instead of just clearing the immediate symptom.
Getting the right help the first time
Across Exeter, Exmouth, and the surrounding area, we cover both sides of this. For anything backing up or overflowing, that's blocked drains and emergency drain services. For water escaping from a pipe instead of a blocked fixture, that's emergency plumber and burst pipe repair. If a gas appliance like a boiler is involved instead, that work needs a Gas Safe registered engineer. Check the Gas Safe Register if you're not sure whether yours is up to date.
If in doubt, describe what you're seeing through our contact form. We'll tell you honestly which service you need before we come out — get in touch online.
