How Much Does an Ejector Pump Cost?

Typical Range:

$850 - $3,800

Find out how much your project will cost.

Cost data is based on research by HomeAdvisor.

Updated March 9, 2022

Reviewed by Jeff Botelho, Licensed Journeyman Plumber.

Written by HomeAdvisor.

Replacing a sewage ejector costs $850 to $3,800, with an average cost of $2,325, including parts and labor. The project total depends on the size of the pump you need, the type of pump you choose, and the job complexity. Swapping like-for-like is the most affordable option, but costs can quickly mount when changing the pump type or fixing damage that requires new line installation.

Average Cost to Install an Ejector Pump

Average Cost$2,325
High Cost$3,800
Low Cost$850

Ejector Pump Material Price

Ejector pumps cost $300 to $800, on average. However, you can find basic plastic pumps for as little as $150 and high-end cast-iron models for up to $2,000. Plastic is generally the most budget-friendly, while a full cast-iron pump is the most expensive option but also the most robust and least prone to breaking down.

Pump MaterialCost Range (Pump Only)Average Cost (Pump Only)
Plastic$150 – $500$325
Plastic and cast iron$200 – $700$450
Stainless steel$250 – $800$525
Full cast iron$250 – $2,000$1,125

Price by Capacity

The cost of a pump also varies based on its capacity, or the rate at which it can move water. The higher the gallons per minute (GPM) or gallons per hour (GPH), the more expensive the pump.

The maximum flow rate (the horsepower) you need is based on several factors, including how far below the main sewer line your plumbing is. You'll need higher horsepower (and maximum GPM) further below the communal sewer line, since the pump needs to work harder to push the wastewater and soft solid up to the communal line.

Gallons Per Minute (GPM)Gallons Per Hour (GPH)Average Cost (Pump Only)

Ejector Pump Installation Cost

Ejector pump installation costs $650 to $1,200 for a standard replacement. You'll need to hire a local plumber to install an ejector pump. Plumbers cost $45 to $200 per hour.

Expect to pay up to $2,500 in labor costs if you need to install an entire pump system, including adding a pump pit and new pipework.

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Ejector Pump Installation Cost Factors

Aside from installing the pump, various other factors can influence the total project cost. Plus, there are the ongoing costs of maintaining and running the pump. 

"If space is an issue or you don't want to incur the expense of having a pit and underground plumbing dug up in your basement or home, there are systems that rely on a compact pump (often installed onto the back of a toilet) that can receive waste from an entire bathroom and discharge through small (1" diameter or smaller) pipe. The fixtures can be pricey but the labor to install these systems is far less than what is involved in a traditional ejector pump installation," said Jeff Botelho, Expert Review Board Member and licensed journeyman plumber.

Aside from installing the pump, various other factors can influence the total project cost. Plus, there are the ongoing costs of maintaining and running the pump.

Installing a Backup Pump

Some homeowners like to play it safe and install a battery-powered backup ejector pump, which costs around $600, including parts and labor. It's a smart option if you live in an area prone to power outages, as it ensures your non-gravity plumbing lines will keep working if the power goes out. When you've got no power, the last thing you want is a sewage backup and overflow in the basement.

Tank Cleaning

The cost of pumping a sewage tank typically falls between $290 to $550. If the tank is particularly dirty, you may have to pay extra for tank pumping or cleaning.

Pump Running

On average, plan to spend $30 to $60 per month to run the pump. Running costs vary based on the price of utilities in your area and how much wastewater and soft solids your pump has to handle.


You need to budget for the annual inspection, which costs around $130. However, you might be able to get maximum value for your money by getting a whole-home plumbing inspection package.

You'll also need to budget for any repairs, which costs $45 to $200 per hour in labor costs when you hire a plumber. To avoid the risk of breakdowns and costly repairs, be vigilant about what you flush. Avoid flushing hard solids, feminine hygiene products, and any wipes, which all put extra strain on the motor and can clog and break the pump.

DIY vs. Hiring a Sewage System Pro

Installing a sewage ejector pump is not a DIY task. Even if you're a skilled home improvement enthusiast, this job is one that's best left to the professionals. Getting it wrong can be extremely messy and costly. Avoid sewage backups and overflows by hiring a qualified plumber to do the installation for you.


Do I need a sewage ejector pump?

If you have plumbing below the level of the communal sewer line, such as a basement bathroom or laundry room, you need a sewage ejector pump. Unlike regular plumbing, which moves waste via gravity, below-grade plumbing can't use gravity. Without an appropriate pump, gravity will work against you and eventually result in a wastewater overflow.

"When selecting a pump, make sure it is suited to your needs," says Botelho. "There are smaller models that are meant for washing machines and larger units that can handle waste for multiple bathrooms—ultimately, you don't want to install a system only to find that the pump is undersized."

How does a sewage ejector pump work?

The sewage ejector pump sits in a pit with a float attached. Once the contents reach a high enough level to lift the float, the pump engages and forces the waste out of the pit and into the main sewer line.

What maintenance does a sewage ejector pump need?

As long as you're careful about what you flush, a sewage ejector pump should need no regular maintenance aside from a yearly inspection. The plumber will clean the pump and oil the motor to ensure optimal operation and minimal wear.

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