Sewage ejector or grinder pump

Understand basin, airtight cover, vent, pump, check valve, shutoff and alarms when fixtures are below gravity drainage level.

VERT / GREEN

Keep the basin accessible and know which fixtures discharge to it.

JAUNE / YELLOW

Frequent cycling, odours or alarms require distinguishing pump, float, check valve, blockage and venting.

ROUGE / RED

Sewage overflow, wet electrical equipment, open cover or entry into basin: stop and use a professional.

Interactive triage

This triage helps choose the next step; it does not replace design, permitting or professional diagnosis.

Alarm or abnormal cycling
Reduce inflow and diagnose pump/floats/check valve. Persistent odour
Check cover seal and venting without unnecessarily opening the basin. Overflow/sewage release
Avoid contact, control electrical hazards and call for service. Scheduled alarm test
Test per manufacturer and record date.

Useful tools and data

Plumbing plan
Pump/alarm model
Cycle/failure history

What the professional checks

Verify pump sizing
Confirm check valve/shutoff/vent
Test alarms and cover seal

Official sources

Checked 2026-08-22.

CNRC — Code national de la plomberie 2025

V30

Shared, access and specialized interfaces

V30 connects projects where multiple systems, owners or rules meet.

Pool: pump, filter, heating and equipment

V39 · Specialized diagnostic

Sewage ejector and grinder pump

VERT / GREEN

Prepare and document before changing the system.

JAUNE / YELLOW

Verify interfaces and requirements before work.

ROUGE / RED

Stop when safety, structure, compliance or the cause is not confirmed.

Specialized triage

Fixture below sewer level
Confirm gravity drainage is not feasible before pumping.Unsealed basin/cover
Correct sealing, venting and connections before use.No alarm/service access
Plan failure, overflow and maintenance before enclosure.Documented maintenance
Test alarm/check valve per manufacturer.

What the professional checks

The plumber sizes pump/discharge and verifies basin, vent, union, backwater/check valve, shutoff and discharge to code.

Official / technical sources

CNRC — Code national de la plomberie 2025 ↗