A busy holiday kitchen sends more food scraps, grease, and dishwater through the sink than it sees on an ordinary day. When the sink suddenly drains slowly or stops altogether, the immediate question is whether the blockage is close to the fixture or farther down the home's drainage system.
Start with the pattern. One affected sink often points to a local obstruction. Several slow or gurgling fixtures can indicate a larger drain or sewer-line problem.
Stop adding water to a blocked sink
Do not keep running the faucet to test a sink that is already full. Avoid using the dishwasher if it drains through the same kitchen plumbing. More water can overflow the sink or return through another connection.
Remove dishes and loose food from the basin. Clean the visible strainer or stopper if it lifts out without tools. If the sink has two bowls, check whether both are holding water. This helps a plumber understand where the blockage may be located.
Do not mix drain-cleaning products or keep adding chemicals after the first product fails. Tell the plumber what has already gone into the drain so the work can be handled safely.
Why holiday cooking can block a kitchen drain
Fats, oils, and grease are common causes of kitchen blockages. They may leave the pan as a liquid, then cool and harden against the inside of the pipe. Food particles and other debris can collect on the buildup until water has little room to pass.
EPCOR advises Edmonton residents not to pour grease into a sink or toilet, even with hot water and dish soap. Hot water may move it farther through the plumbing, but the grease can cool and solidify later.
Better disposal depends on the amount:
- Scrape food from pans and dishes into the green organics bin
- Wipe small amounts of grease with paper towel and place it with food scraps
- Put larger amounts, up to one litre, in a sealed container in the garbage
- Take more than one litre of used cooking oil to an Edmonton Eco Station
You can check the current disposal instructions in EPCOR's residential fats, oils, and grease guide.
One clogged sink or a larger drain problem?
An isolated kitchen sink problem often starts close to the fixture. The strainer, trap, or nearby branch drain may be holding food, grease, or another obstruction.
Look beyond the kitchen when any of these symptoms appear:
- More than one sink, tub, or floor drain is slow
- A toilet gurgles when the sink or dishwasher drains
- Water rises in a tub, shower, or basement floor drain
- The blockage returns soon after it is cleared
- Sewage odour keeps returning
- A lower-level drain reacts when water is used upstairs
Those patterns can point to a blockage deeper in the private sewer line. Grease may be part of the problem, but roots, damaged pipe, a sagging section, or non-flushable material can produce similar symptoms.
If sewage is rising through a floor drain or fixture, stop using sinks, toilets, showers, washing machines, and dishwashers. EPCOR asks residents to report an Edmonton sewer backup through its 24-hour emergency line at 780-412-4500.
When a camera inspection is useful
A straightforward blockage may only need drain cleaning. A recurring clog deserves a closer look because clearing the symptom does not explain why it keeps returning.
A drain camera may help locate buildup, roots, an offset joint, or visible pipe damage. It is most useful after the plumber considers the symptoms and determines that the line can be inspected. A camera is not necessary for every slow sink.
Squad V provides drain cleaning and camera inspection in Edmonton for slow, blocked, and recurring drains.
For broader warning signs and basement protection, read our guide to preventing sewer backups in Edmonton.
Get the kitchen draining again
After the blockage is cleared, keep grease and food scraps out of the sink and pay attention to whether the problem returns. A repeat clog in the same fixture can point to buildup or a problem that was not fully removed. Symptoms spreading to other fixtures deserve prompt assessment.
Call Squad V Plumbing Inc. at (780)-667-7169 or request drain service in Edmonton if the kitchen sink remains blocked or several drains are affected.








