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Holiday Kitchen Drain Clogs: How to Prevent Them and What to Do in the East Valley

Josh Chasteen, Updated , 5 min read

Most holiday kitchen clogs come from the same thing: grease, gravy, and food scraps going down the sink in one big day of cooking. The City of Mesa and the City of Chandler both give the same advice. Keep fats, oils, and grease out of the drain, scrape plates into the trash, and go easy on the garbage disposal.

Why the kitchen line clogs this time of year

Grease is liquid when it is hot. It cools as it moves down the pipe and sticks to the walls. Food particles catch on that layer, and the opening gets a little smaller every time. Chandler's fats, oils, and grease program says this plainly: food particles stick to grease clinging to pipe walls and speed up the blockage.

A normal week might never push that line over the edge. A holiday does. You have more pans, more people, more dishwasher loads, and more scraps going down the disposal in a few hours than the sink sees in a month. The clog has often been building for a long time, and the holiday is just the day it finally shows up.

What to do with the grease

Here is what Mesa and Chandler tell residents to do:

  • Let grease cool, then pour it into a can or jar and put it in the trash. Chandler says small amounts can be frozen, covered, bagged, and thrown out.
  • Wipe greasy pans with a paper towel before you wash them.
  • Scrape plates into the trash, not the sink.
  • Do not use hot water and soap to push grease down. Mesa notes it will harden further down in your pipes or in the sewer.
  • For a lot of oil, like a turkey fryer, use your city's household hazardous waste drop-off. Mesa recycles used cooking oil at its Household Hazardous Materials facility. Chandler takes larger amounts by appointment at 480-782-3510.

Go easy on the disposal

A garbage disposal grinds food up. It does not make it disappear. Chandler's guidance is to use disposals sparingly, because ground-up food plus grease is exactly what builds a clog. Things that give disposals and drains the most trouble on a holiday:

  • Potato peels, which turn into a starchy paste
  • Rice and pasta, which keep swelling with water
  • Turkey skin, fat trimmings, and gravy
  • Coffee grounds and eggshells
  • Celery, onion skins, and other stringy scraps

When in doubt, it goes in the trash.

If the sink backs up anyway

  1. Stop the water. Turn off the faucet and do not start the dishwasher. It drains into the same pipe.
  2. Check the disposal. If it hums but does not spin, turn it off. Most units have a reset button on the bottom and a hex socket underneath for freeing a jam. Never put a hand inside.
  3. Plunge it. Use a flat cup plunger, not a toilet plunger. On a double sink, hold a wet rag tight over the other drain so the pressure goes toward the clog.
  4. Skip the chemicals. On a full stop, they often sit in the sink and do not reach the clog. Now you have a basin of caustic water to deal with.
  5. Watch other drains. If water comes up in a tub, a shower, or a floor drain when you run the sink, the blockage is past the kitchen line and in the main line. Stop using water in the house and call.

When to call a plumber

Call when plunging does not move it, when it keeps coming back, or when more than one drain is slow at the same time. A clog that keeps returning usually means grease buildup further down the pipe. Plunging pokes a hole through it, and it closes up again. A proper drain clearing cleans out the line, and a camera can show what is actually going on in there.

Josh has 15+ years in the industry, and the advice we give every customer is the same: find out why it clogged, not just how to clear it once.

Can I pour cooking grease down the drain if I run hot water with it? No. The City of Mesa says not to use hot water and soap to wash grease down the drain, because it hardens further down in your pipes or in the sewer. Chandler says the same and adds that grease-dissolving detergents can just move the problem further down the line. Let it cool, put it in a can or jar, and throw it in the trash.

Is it OK to put food scraps down the garbage disposal? Use it sparingly. Chandler's own guidance says disposals do not keep grease out of the pipes, and food particles stick to grease on the pipe walls and speed up a blockage. Scrape plates into the trash and save the disposal for the small bits that get past you.

My kitchen sink is backing up into the other side. What should I do? Stop running water and stop running the dishwasher, since it drains into the same line. Try a cup plunger on the clogged side while you hold a wet rag tight over the other drain. If that does not move it, or if water shows up in a tub, shower, or floor drain, the clog is further down the line and it is time to call.

Should I use a chemical drain cleaner? We would skip it on a full stop. If it does not clear the clog, you now have a sink full of caustic water that you or a plumber has to work around. A plunger or a basic hand snake is safer to try first.

Where do I take a large amount of used cooking oil, like from a turkey fryer? Mesa residents can recycle used cooking oil at the city's Household Hazardous Materials facility. Chandler asks residents to bring larger amounts in a sealed container to its Household Hazardous Waste facility by appointment at 480-782-3510. Check your own city's household hazardous waste page if you live elsewhere.

Sink backed up the night before the big dinner, or the day of? Yellowstone Plumbing & Drains answers 24/7 across Mesa, Gilbert, Chandler, Queen Creek, San Tan Valley, and Tempe. Call or text (480) 404-5226 and talk to a real person.

Sources

Where the numbers come from.

Every outside figure on this page is cited below. Where we quote our own invoices, it's the middle half of what customers paid in the last 12 months.

  1. 01City of Mesa, Safe Disposal of Fats, Oils, Grease & Personal Items
  2. 02City of Chandler, Fats Oils and Grease Program

Good to know

Questions we get on this one.

Straight answers. Anything else, call or text and a person picks up.

Can I pour cooking grease down the drain if I run hot water with it?

No. The City of Mesa says not to use hot water and soap to wash grease down the drain, because it hardens further down in your pipes or in the sewer. Chandler says the same and adds that grease-dissolving detergents can just move the problem further down the line. Let it cool, put it in a can or jar, and throw it in the trash.

Is it OK to put food scraps down the garbage disposal?

Use it sparingly. Chandler's own guidance says disposals do not keep grease out of the pipes, and food particles stick to grease on the pipe walls and speed up a blockage. Scrape plates into the trash and save the disposal for the small bits that get past you.

My kitchen sink is backing up into the other side. What should I do?

Stop running water and stop running the dishwasher, since it drains into the same line. Try a cup plunger on the clogged side while you hold a wet rag tight over the other drain. If that does not move it, or if water shows up in a tub, shower, or floor drain, the clog is further down the line and it is time to call.

Should I use a chemical drain cleaner?

We would skip it on a full stop. If it does not clear the clog, you now have a sink full of caustic water that you or a plumber has to work around. A plunger or a basic hand snake is safer to try first.

Where do I take a large amount of used cooking oil, like from a turkey fryer?

Mesa residents can recycle used cooking oil at the city's Household Hazardous Materials facility. Chandler asks residents to bring larger amounts in a sealed container to its Household Hazardous Waste facility by appointment at 480-782-3510. Check your own city's household hazardous waste page if you live elsewhere.

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