Permit Library › Municipal: City of Toronto › Toronto Water & Engineering & Construction Services › Sewer & watermain approvals
Environmental Compliance Approval (ECA): Municipal Sewage Works
MECP approval for sewage works, processed by Toronto Water under the Transfer of Review Program.
You need it when: You modify, relocate, divert or build municipal storm or sanitary sewers.
Why it's needed
- Required for all proposed municipal sewage works.
When to apply
- Submit once the wet-utility design is accepted by the City (all ECS/Toronto Water comments closed).
- Process: applicant → ECS (completeness, signs forms) → Toronto Water Transfer of Review → recommendation → MECP issues the ECA.
- Sewage works on private land need a City easement and an Environmental Site Assessment peer review.
Review time
Plan for about 10 business days. Transfer of Review ≈10 BD per cycle; allow extra time for MECP issuance.
Documents for a complete application
- MECP ECA application forms
- Stamped design drawings compliant with the City Design Criteria for Sewers & Watermains
- Design brief / calculations
- TPUCC sign-off; environmental assessment confirmation
- ECA / DWWP design submission checklists
Submission checklists
- MECP Environmental Compliance Approval (ECA): Municipal Sewage Works (Types A, B, D)
- Design Submission Checklist: Linear Infrastructure Projects (TPUR)
How to submit
- Engineering & Construction Services (development engineering review).
Often needed first
Official pages
Track Environmental Compliance Approval (ECA): Municipal Sewage Works free.
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Sources are marked in the text: [TO] toronto.ca pages, [Guide] general industry guidance, [Plan] permit planning practice. Confirm on the official page before applying.