How do I choose a professional for drains & sewer?
Choose a properly qualified and insured professional whose written scope identifies diagnosis, permits, parts, labour, exclusions, warranty, cleanup, and total price.
What this means
Drains & sewer covers slow drains, backups, odours, noises, and multiple fixtures. Relevant observations include Several drains are slow, Drain gurgles when another fixture runs, Sewage smell near a drain, Floor drain is backing up, Kitchen sink will not drain. The correct response depends on age, design, climate, usage, installation, recent work, and the exact manufacturer instructions; these observations narrow next steps but do not prove a failed part.
Safe checks
- Verify the licence or certification required locally for work on drains & sewer.
- Compare at least two written scopes when the situation is not an emergency.
- Confirm insurance, permits, parts, labour, warranty, exclusions, cleanup, payment schedule, and change-order rules.
Stop and get help if
- Stop for sewage, rapidly spreading water, a bulging surface, or water near electricity.
- Do not force a seized valve or open a concealed supply or drain.
Which professional to call
Use a qualified plumber when the condition exceeds safe user access or the visible checks do not explain it.
Find the relevant tradeSource and method
This answer combines HomeSOS's structured triage with safety boundaries supported by a public source. It does not replace inspection.
Health Canada: Home safetyReviewed August 12, 2026