Sewage Pump Installation & Repair — Basement Ejector Mississauga

Delex Plumbing installs and repairs sewage ejector pumps throughout Mississauga — basement bathroom waste systems, macerator pumps, and below-grade ejector basins for laundry, utility sinks, and full bathrooms. Licensed, insured, flat-rate pricing.

What Is a Sewage Ejector Pump and When Do You Need One?

A sewage ejector pump — also called a sewage grinder pump or ejector basin system — is required whenever a basement plumbing fixture drains below the level of the main sewer line leaving the house. Gravity drainage depends on the fixture being higher than the sewer exit point. In most Mississauga homes, the basement floor is 1 to 2 metres below the sanitary sewer connection in the street, making gravity drainage impossible for basement toilets, showers, laundry tubs, or utility sinks without a pumping system.

The ejector basin is a sealed tank set into the basement floor below the fixture drain elevation. Waste flows by gravity from the fixtures into the sealed basin. When the basin reaches a set level, the sewage pump activates and pumps the waste up through a discharge pipe to the sanitary stack above the basement slab, where gravity takes over and carries it to the street sewer.

Ejector pump systems are essential for any basement renovation that includes a bathroom, laundry room, or wet bar below the main floor sewer level. Without an ejector pump, there is no code-compliant way to drain these fixtures to the sanitary system. We size and specify the correct ejector pump capacity and basin volume during the planning phase of every basement bathroom renovation we work on.

Sewage ejector pumps are separate from sump pumps and handle different waste streams. A sump pump handles groundwater that collects in the pit through the weeping tile system. A sewage ejector pump handles sanitary waste from plumbing fixtures. The two systems must never be interconnected — mixing sanitary waste and groundwater creates both a health hazard and a code violation.

Sewage Ejector Pump Installation — Basin, Pump & Discharge

Sewage ejector installation begins with cutting the basement slab at the basin location, excavating to the required depth for the basin model, setting the basin, connecting the inlet drains from the fixtures, setting the pump inside the basin, connecting the discharge line to the sanitary stack, installing the vent through the basin lid, and sealing the basin lid airtight. The basin lid must be airtight and gasketed — an unsealed ejector basin releases sewage gases into the basement, creating a serious health hazard.

We size the ejector pump based on the fixture unit count connected to the basin, the vertical lift required from the basin to the stack connection, and the discharge pipe length and diameter. Standard residential ejector pumps handle 2 to 4 fixture units — a basement toilet, sink, and shower. Commercial applications or multi-fixture residential basements may require a larger pump or a duplex alternating system.

The discharge pipe from the ejector basin to the sanitary stack must be a minimum 50mm diameter, must include a check valve immediately above the basin to prevent backflow, and must vent through an air admittance valve or a dedicated vent stack to prevent siphoning. We install all ejector systems to Ontario Plumbing Code requirements and obtain the required building permit before cutting the slab.

Ejector basin capacity — the volume of waste the basin holds between activations — must be matched to the connected fixture usage pattern. A basin that is too small activates the pump very frequently, increasing wear. A basin that is too large allows waste to sit for extended periods, increasing the risk of solids settling and blocking the pump inlet. We specify basin capacity based on the expected daily fixture use pattern for the specific basement application. Venting the ejector basin is a requirement that is frequently overlooked in DIY sewage pump installations. The basin lid must have a vent connection that connects to a dedicated vent stack or an air admittance valve. Without a vent, the pump activation creates a pressure wave in the discharge pipe that can break the water seal in connected fixture traps — producing sewer gas odours in the basement. A properly vented ejector system operates with no odour inside the basement under normal conditions. If you notice sewer gas odour near the basement floor or utility area, the first item to check is the ejector basin lid gasket — a cracked or unseated lid gasket is the most common source of basement sewer gas. We replace lid gaskets as a standard part of any sewage pump service call.

Macerator Pump Systems — No Pit Required

A macerator pump (brand names include Saniflo and Saniplus) is a compact sewage grinding unit that mounts directly behind or below a toilet or fixture without requiring a pit cut into the basement slab. The macerator grinds solid waste and pumps the slurry through a small-diameter discharge pipe — as small as 22mm — to the sanitary stack. Macerator systems are appropriate for finished basements where cutting the slab is impractical or for rental suites where a full ejector basin installation is not cost-justified.

Macerator pumps have limitations compared to full ejector basin systems. They handle fewer fixture types — most units are rated for one toilet, one sink, and one shower. They require periodic maintenance to keep the macerator blades clean. They are more susceptible to failure from non-flushable items than a standard ejector pump. And the discharge pipe must maintain a minimum slope and cannot exceed a maximum horizontal run without a booster pump.

We install, service, and repair macerator pump systems from all major brands. If a macerator fails, we diagnose whether the issue is a blade blockage, a float switch failure, or a motor failure. Blade blockages from non-flushable items are the most common service call. We also advise on whether a macerator replacement or an upgrade to a full sump pump installation with an ejector basin is the better long-term investment for the specific basement application.

Sewage Pump Repair — Diagnosis & Emergency Service

Sewage ejector pump repair calls are urgent by nature — a failed ejector pump means the basement bathroom or laundry room cannot be used until the pump is restored. We provide 24/7 emergency sewage pump repair service across Mississauga, with a typical 45-minute dispatch time.

Common sewage pump failures include: float switch tangling or failure causing the basin to overflow before the pump activates, check valve failure allowing discharged waste to flow back into the basin, pump impeller blockage from non-flushable debris, and pump motor failure from sustained overload or age. We carry replacement float switches, check valves, and pump units for the most common residential ejector models on our service vehicles for same-visit repairs.

If a sewage ejector basin overflows into the basement, we treat the situation as a sewage contamination event — not simply a plumbing repair. We advise on the sanitation protocol required before basement restoration can begin, which includes disinfection of all surfaces that contacted sewage waste. For emergency plumbing response to an active sewage overflow, call 416-910-2550 immediately. Sewage pump service is a core part of our basement plumbing offering — we review the entire basement waste system during ejector pump calls to identify any related issues with floor drains, laundry drains, or utility sink connections. If you also need sump pump repair for the groundwater side of the basement drainage system, we handle both in a single coordinated visit, minimizing disruption to the basement.

Free Estimate — Call 416-910-2550

For a sewage pump installation estimate or emergency repair, call 416-910-2550, contact us online, or request service for same-day booking.

Frequently Asked Questions

Q: How much does sewage ejector pump installation cost in Mississauga?

A: A full sewage ejector basin installation including slab cutting, basin, pump, and discharge line costs $2,500 to $5,500 depending on the depth of excavation, basin size, and discharge run length. A macerator pump installation costs $800 to $1,800. All prices include parts and labour, flat-rate. Call 416-910-2550 for a free estimate.

Q: What is the difference between a sump pump and a sewage pump?

A: A sump pump removes clean groundwater from the sump pit and discharges it to the exterior. A sewage ejector pump handles sanitary waste from below-grade plumbing fixtures and pumps it up to the sanitary sewer stack. They handle different waste streams and must never be connected to the same discharge line.

Q: Can a sewage pump handle toilet paper and waste?

A: Yes, a properly sized sewage ejector pump is designed to handle toilet paper and human waste. Macerators use a grinding blade to reduce solids before pumping. Standard ejector pumps pass solids up to 50mm in diameter. Neither type should receive wipes (including flushable wipes), feminine hygiene products, or other non-biodegradable materials, which cause blockages.

Q: How long does a sewage ejector pump last in Mississauga?

A: A quality sewage ejector pump has a service life of 7 to 15 years depending on usage frequency and maintenance. Annual inspection of the basin, float switch, and check valve is recommended. We include ejector pump inspection as part of our plumbing inspection and maintenance plan service.

Get Your Free Estimate Today!

Or Give Us A Call: 416-910-2550

Licensed & Insured Trusted Local Plumbers

Fast Response Usually Within 1 Hour

Satisfaction Guaranteed 100% Quality Work