Garbage Disposals for Septic Systems

Garbage disposals work with your septic system to help keep your kitchen, community and environment clean.

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

Garbage disposal grinding food waste.

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.

Septic using home

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 for homes on septic.

Evolution Septic Guard

Evolution Septic Guard

Evolution Septic Guard combines a 3/4 HP Evolution garbage disposal with the InSinkErator BOOST Injection System – an automatic injection of microorganisms that helps break down food waste.

InSinkErator BOOST Injection System

InSinkErator BOOST Injection System

Compatible with all InSinkErator® garbage disposals, the system dispenses Septic Guard to support the digestion of solids in septic systems, help reduce sink odors, and reduce 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.

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

Badger 1
Badger 5
Badger 5XP
Power .75 HP
Power 1 HP
Evolution .75 HP
Evolution Septic Guard
Evolution 1 HP
Evolution Cover Control

Horsepower

1/3

1/2

3/4

3/4

1.0

3/4

3/4

1.0

3/4

Sound

Standard Sound

Standard Sound

Standard Sound

Reduced Sound

Reduced Sound

Quiet SoundSeal® Technology

Quietest SoundSeal® Technology

Quietest SoundSeal® Technology

Quiet SoundSeal® Technology

Grind Stages

1‑Stage Grind

1‑Stage Grind

1‑Stage Grind

2‑Stage MultiGrind® Technology

2‑Stage MultiGrind® Technology

3‑Stage MultiGrind® Technology

3‑Stage MultiGrind® Technology

4‑Stage MultiGrind® Technology

3‑Stage MultiGrind® Technology

Grindability

Dependable grind for most food scraps

Dependable grind for most food scraps

Dependable grind for most food scraps

Finer grind designed to prevent clogs1

Finer grind designed to prevent clogs1

Finest grind designed to prevent clogs2

Finest grind designed to prevent clogs2

Finest grind designed to prevent clogs, plus a cleansing paddle for odor reduction2

Finest grind designed to prevent clogs2

Lift & Latch® Technology

EZ Connect Disposal

EZ-Connect Icon
EZ-Connect Icon
EZ-Connect Icon
EZ-Connect Icon
EZ-Connect Icon
EZ-Connect Icon

EasySwap Installation

Durability

Long lasting galvanized steel grind components

Long lasting galvanized steel grind components

Long lasting galvanized steel grind components

Rust-resistant stainless steel grind components

Rust-resistant stainless steel grind components

Rust-resistant stainless steel grind components

Rust-resistant stainless steel grind components

Rust-resistant stainless steel grind components

Rust-resistant stainless steel grind components

Feed Type

Continuous Feed

Continuous Feed

Continuous Feed

Continuous Feed

Continuous Feed

Continuous Feed

Continuous Feed

Continuous Feed

Batch Feed

In-Home Limited Warranty

1‑Year3

3‑Year3

4‑Year3

6‑Year3

7‑Year3

9‑Year3

9‑Year3

10‑Year3

9‑Year3

MSRP

$1194

$1394

$1504

$1894

$2394

$2894

$3494

$3994

$3394

1. Compared to our 1-stage grind disposals 2. Compared to 1 & 2 stage MultiGrind® Technology 3. See product warranty for details. 4. The listed price may differ from actual selling prices in your area.

Frequently Asked Questions

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