Residential
Keep Grease Out of Your Drains
Why It Matters
Grease buildup is one of the most common causes of sewer backups in homes.
When grease, oils, and food scraps are washed down the sink, they can stick to the inside of your pipes. Over time, this buildup can block the flow of wastewater and cause sewage to back up into your home.
Preventing grease from entering your drains helps protect your property and keeps the sewer system working properly for the entire community.
What Causes the Problem
Grease can come from everyday cooking, including:
- Meat fats and drippings
- Cooking oils
- Butter, margarine, and shortening
- Sauces, dressings, and dairy products
- Food scraps and leftovers
Even small amounts can build up over time and create blockages.
How to Prevent Clogs
Simple steps in the kitchen can help prevent costly sewer issues:
- Never pour grease or oil down the sink or toilet
- Let grease cool, then place it in a sealed container and throw it in the trash
- Scrape food scraps into the trash before rinsing dishes
- Use a sink strainer to catch food particles
- Empty strainers into the trash regularly
Know Your Responsibility
All household plumbing connects to a private sewer lateral line that carries wastewater from your home to the City’s main sewer line.
As a homeowner, you are responsible for maintaining your private sewer line from your home to the property line. Regular maintenance helps prevent blockages and keeps wastewater flowing properly.
If Your Sewer Line Is Blocked
If your sewer lateral is blocked, it is the homeowner’s responsibility to identify the cause and clear the blockage. Most licensed plumbers can provide this service.
If a plumber determines the issue is located in the City’s portion of the sewer line, contact Public Works immediately so staff can respond.
Public Works: (760) 241-6365
Proper Disposal Matters
Grease and other household materials should be disposed of properly to help prevent sewer blockages.
For safe disposal options, visit the Household Hazardous Waste Collection Center.