rates page: effective Apr 1, 2026, single-family residential: $2.124/m3 + fixed $0.97/day ($354/yr); sewer 90% of water volumetric+fixed. Other metered $1.309/m3 plus fixed by meter size. Billed quarterly.
Water & sewer — Thunder Bay, Ontario
What are the water and sewer rules and rates?
The City of Thunder Bay, Ontario has 3 adopted bylaws on file: 2026 Sewer & Water Rates; Sewer Use By-law, BL 27/2019; Water meter readings and billing (rates page), verified 2026-10-18.
Controls sewage and stormwater discharge to municipal sewers and lands; defines and limits what can legally be put down sanitary/storm sewers, with inspection and offence provisions under the Municipal Act.
rates page: 2026 residential $2.124/m3 plus $0.97/day, sewer 90% of total; four bills a year; 5% penalty after due date; average household 2026 cost about $1,480.