Garbage Disposals for Septic Systems

Learn why InSinkErator^® garbage disposals are proven safe for properly maintained septic systems.

A garbage disposal grinds food waste to flow easily through a home’s plumbing and into a septic tank.

Food scraps at the bottom of a septic tank.

Because food scraps are 60-95% water, they add very little to the solids that settle at the bottom of the tank.

A 2019 study from the University of Minnesota shows that septic systems attached to a garbage disposal don’t require more frequent pumping than those that aren’t.¹

1. Study of food waste degradation in a simulated septic tank - Hongjian Lin, Yuchuan Wang, Leif van Lierop, Carlos Zamalloa, Casey Furlong, Michael Keleman, Bo Hu, 2019

Don’t fall for the myths.

You’ve probably been told that using a garbage disposal to get rid of food waste is going to compromise your septic system. The reality is, it won’t.

Providing added assurance to homes on septic.^*

^*For a properly maintained septic system

Evolution Septic Guard

Evolution Septic Guard combines a 3/4 HP Dura-Drive® Induction Motor with the InSinkErator BOOST™ Injection System – an automatic injection of naturally-occurring bacteria and enzymes to support the digestion of solids in properly maintained septic systems.

InSinkErator BOOST^™
Injection System

Compatible with all InSinkErator^® garbage disposals, Septic Guard liquid formula supports the digestion of solids in septic systems, helps reduce sink odors, and reduces food waste build-up in your septic system and pipes.

Choose an Evolution Septic Guard disposal or add InSinkErator BOOST^™ Injection System to any InSinkErator^® disposal.

Invented, designed, and assembled in the U.S.A

Badger® 1

Badger® 5

Badger® 5XP

Power .75HP

Power 1.0HP

Evolution® .75HP

Evolution® .75HP LED

Evolution® 1.0HP

Evolution® 1.0HP LED

Evolution Septic Guard

Evolution Cover Control®

Horsepower

1/3

1/2

3/4

1.0

3/4

Sound

Standard Sound

Reduced Sound

Quiet SoundSeal® Technology

Quietest SoundSeal® Technology

Quiet SoundSeal® Technology

Grind Stages

1-Stage Grind

2‑Stage MultiGrind® Technology

3‑Stage MultiGrind® Technology

4‑Stage MultiGrind® Technology

3‑Stage MultiGrind® Technology

Grindability

Dependable grind for most food scraps

Finer grind designed to help prevent clogs vs 1‑stage of grind

Our finest grind designed to help prevent clogs vs 1- and 2-stage grind

Our finest grind designed to help prevent clogs and rinse residue vs 1- and 2-stage grind

Our finest grind designed to help prevent clogs vs 1- and 2-stage grind

Lift & Latch® Technology

EZ Connect Disposal

LEDefense

INCLUDED

EasySwap Installation

Durability

Long lasting galvanized steel grind components

Rust-resistant stainless steel grind components

Feed Type

Continuous Feed

Batch Feed

In-Home Limited Warranty

2‑Year

5‑Year

6‑Year

7‑Year

9‑Year

10‑Year

9‑Year

MSRP

$129

$149

$179

$199

$249

$299

$349

$399

$359

$349

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Frequently Asked Questions

How to pick a garbage disposal?

There are two ways to approach picking a garbage disposal.

Use a garbage disposal comparison chart where you can easily identify features most important to you such as horsepower, sound, or warranty.
Use a garbage disposal product selector tool. This will take into account your personal life-style for those who are not sure how much horsepower they actually need.

How to use a garbage disposal?

Turn on sink cold water. Cold water holds fats and oils together allowing them to be washed through the drain pipe.
Turn on disposer. (wall switch or button switch).
Gradually feed food scraps into the disposal's bladeless grind system. Mix up scraps if possible.
Run until grinding stops; turn off disposer.
Keep water running for a few seconds to rinse the disposer.

What is the disposal in the sink called?

A garbage disposal is the most widely accepted name in the United States. Others include:
Garbage Disposer
Sink Disposal
Food Waste Disposer (UK)
Garburator (Canada)
Food Grinder
Sink Grinder

What is a continuous feed garbage disposal?

A continuous feed garbage disposal is most common and is powered by a switch (wall or air). The disposal is run continually until all food is fed through. Alternatively, a batch feed garbage disposal is one that the switch is in the disposal cover, so the disposal runs only when the cover is on.

Don’t fall for the myths.

Evolution Septic Guard

Frequently Asked Questions

The ONLY Garbage Disposals with induction motors invented, designed, and assembled in the U.S.A.