If you’ve lived in a home with city sewer, you probably didn’t think twice about using your garbage disposal. But for homeowners in Riverside County with a septic system, that disposal can be a “silent killer” for your plumbing.
At Davis Plumbing, we are often asked if you can have a disposal with a septic tank. The answer is yes—but only if you follow some very specific rules to avoid a premature septic pump.
How Disposals Affect Your Septic Tank
A garbage disposal doesn’t make food waste disappear; it just grinds it into tiny particles. When these particles enter your septic well or tank, they don’t break down as easily as liquid waste. This leads to:
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Faster Sludge Buildup: Solid food waste can increase the rate of sludge accumulation by up to 40%.
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Bacterial Overload: Your tank’s natural bacteria are designed to handle human waste, not a half-eaten burrito. Adding too much organic matter can throw off the biological balance.
If You Use a Disposal, Do This:
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Double Your Pumping Frequency: If you use a disposal daily, you should schedule a septic service near me every 1.5 to 2 years instead of the standard 3 to 5 years.
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Avoid “The Big Three”: Never put grease, starchy foods (like potato peels), or fibrous vegetables (like celery) down the disposal. These will clog your inlet baffles and lead to a backup.
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Use Plenty of Water: Always run cold water for at least 30 seconds after turning off the disposal to ensure the solids make it all the way to the tank.
The Better Alternative
For the longest possible lifespan of your septic system design, we recommend composting your food scraps instead of using the sink. It’s better for your tank and your garden!
Expert Septic Advice in the 951
Not sure if your disposal has already caused a problem? If you’re noticing slow drains or odors, it’s time for an inspection.
Call Davis Plumbing at (951) 657-0393. We’ll check your sludge levels and help you decide on a maintenance schedule that fits your household’s needs.