Sewage Ejector Pump Repair and Installation in St. Thomas, ON
We repair, replace, and install sewage ejector pumps across St. Thomas. When the pump serving a basement bathroom or laundry stops lifting waste up to the main sewer, we can be out the same day.
What a Sewage Ejector Pump Actually Does
In most of a house, gravity does the plumbing. Waste leaves the fixture, runs downhill, and joins the city sewer under the street. Anything sitting below the level of that sewer line has no downhill left to use. A bathroom in a finished basement or a laundry sink in the cellar simply has nowhere to drain to.
A sewage ejector pump solves that. It sits inside a sealed basin sunk into the concrete floor. Waste from the fixtures above runs down into the basin, a float rises with the level, and the pump lifts the lot up to the height of the main line, where gravity takes over again. Unlike almost every other pump in a house, this one has to move solids.
When it quits, every fixture above it quits with it. That is why sewage ejector pump repair near me tends to get typed into a phone at eleven at night, and not on a Tuesday afternoon over a coffee.
Sewage Ejector Pump vs. Sump Pump
These two get mixed up constantly, including by people who own both. They sit a few feet apart in the same basement and from above they look much the same. They do completely different jobs.
The fastest way to tell at home is to look up. An ejector basin is sealed and has a vent pipe running from the lid into the joists, because it holds sewer gas and code says that gas has to go somewhere. A sump pit is open at the top and has no vent at all.
| Sewage ejector pump | Sump pump | |
|---|---|---|
| What it moves | Toilet, shower and laundry waste, solids included | Groundwater seeping in around the foundation |
| Where it sits | A sealed basin under a below-grade bathroom or laundry | An open pit at the lowest point of the floor |
| What is in the pit | Raw sewage | Clean or muddy water |
| Vent stack | Required. It has to be there | None |
| When it runs | Every time somebody uses a fixture above it | After rain, and through the spring melt |
| If it fails | Sewage backs up into the basement fixtures | Groundwater rises across the basement floor |
This is not a pedantic distinction. Call about the wrong pump and you get a technician arriving with the wrong parts on the truck, which costs you a visit.
Signs Your Ejector Pump Is Failing Near You
A pump that is about to go usually says so first. What follows is sorted by how long you can afford to leave it.
- Sewage standing on the basement floor
- The alarm is going off
- The pump hums but the basin never empties
- Waste is coming back up through the basement shower or toilet
- A sewage smell in the basement that never fully clears
- The pump cycles every few minutes with nobody using anything
- It now takes several minutes to empty a basin that used to take under one
- It shuts off, then starts again straight away
- The pump is past seven years old and has never been opened up
- It groans or rattles for a second on startup
- Nobody has looked at the check valve or the float since the day it went in
Anything in the top row sound familiar?
Do not leave that one with a contact form. Raw sewage on a finished basement floor turns into a restoration bill faster than most people expect.
(226) 785-4812Repair, Replacement, and New Installations
Not every failed pump is a dead pump. A float that has stopped rising. A check valve stuck open, so the same waste drops back into the basin the moment the motor cuts out. An impeller jammed by something that should never have gone down a toilet. All of those are repairs, and all of them cost less than a replacement.
We replace the unit when the motor has burned out, when the housing has corroded through, or when the pump has been down there long enough that nobody makes parts for it any more. A residential sewage ejector pump gives you seven to ten years in normal use. If yours is at the far end of that and it has already failed once, replacing it now costs less than doing this twice.
New installs are a different conversation. If you are finishing a basement and putting a bathroom or a laundry down there, the pit, the basin, the vent and the discharge line all have to go in before the concrete does. Get us in at the framing stage. After the tile is down, the job gets expensive and ugly.
What It Costs in St. Thomas
There is no flat number, and the range is wide. On a repair or a swap the pit is already there, which keeps things reasonable. A brand new install in a basement that has never had one means breaking concrete, and that is the part that moves the bill.
What changes the price
Whether the basin and the pit already exist, or whether the floor has to come up first.
Repair or replacement, and whether the unit down there is one we can still get parts for.
How high and how far the discharge line has to run before it reaches the main.
Whether the existing vent meets current Ontario code. Plenty of older ones do not.
You get the number before we start, and it does not move afterwards. If you have been calling around for ejector pump repair near me and somebody gives you a firm price over the phone without having seen the basin, treat that as a warning rather than a bargain.
Ejector Pump Questions We Get Asked
What is a sewage ejector pump?
It is a pump that lifts waste from fixtures sitting below the level of the city sewer up to a height where gravity can take over. It lives in a sealed basin in the basement floor and it is built to pass solids, which an ordinary water pump is not.
How often should a sewage ejector pump run?
Only when somebody upstairs of it uses water. A shower, a flush, a load of laundry: the basin fills, the pump runs for under a minute, and it stops. If yours is kicking in every few minutes with the house empty, either water is leaking back into the basin or the float is lying to it. Both are worth a look.
Why does my basement smell of sewage?
The basin is meant to be airtight and vented to the roof. When the lid gasket goes, or the vent gets blocked, that gas has to escape somewhere and it picks your basement. A smell that never fully clears is not something to live with. It is the system telling you the seal has failed.
Can I put a basement bathroom in without one?
Only if the basement floor happens to sit above the sewer line, which in most St. Thomas houses it does not. There is one alternative worth knowing about: an upflush or macerating system, which grinds waste and pumps it up a small pipe without any digging. It suits a single fixture in a finished room. For a full bathroom and a laundry, a proper ejector pit is the better long-term answer.
How long does a sewage ejector pump last?
Seven to ten years in an average household. It depends almost entirely on what goes into it. Wipes marked flushable are not flushable, and they are the single most common reason a pump we pull out died young.
Basement Bathroom Out of Action?
Tell us what the pump is doing, or what it has stopped doing. If sewage pump repair near you is what this turns out to be, we will get someone out. If the basin just needs cleaning, we will say that instead.
(226) 785-4812What our customers say
Devon R.
Woke up at five in the morning to an alarm and honestly had no idea what it even was. Turned out to be the pump under the basement bathroom. They talked me through shutting the water off over the phone and had someone here before lunch.
2026-04-06Amara O.
Showed up when they said they would, which is half the battle.
2026-01-15Ken H.
I was sure the whole thing needed ripping out. It did not. He got it running again, cleaned out the basin while he was in there, and it has behaved ever since. Cost a fraction of what I had braced myself for.
2026-06-02Bethany L.
We had been putting up with a smell down there for about a year, which I am not proud of. The lid was not sealing and the vent was partly blocked. One visit and the basement smells like a basement again.
2026-02-27Rob C.
Called two other places first. One never rang back. The other quoted me a number over the phone without looking at anything, which felt off. These ones actually came out, and it turned out the pump was fine and it was a valve behind it.
2026-05-11Nadia F.
Finishing the basement and we needed the new bathroom down there to actually drain. They got the pit and the pump in before the concrete went down and sorted the timing out with our contractor directly, so I never had to referee anything.
2026-03-19