Permit Library › Other GTA municipalities › Region of Durham › Water, sewer & environment
Region of Durham Sewer Use By-law Discharge Approval (dewatering)
Discharges to regional sanitary and storm sewers are controlled by Sewer Use By-law 55-2013. Dewatering must follow Durham's dewatering specification (OPSS 518), with treatment and any MECP permit conditions [DUR].
You need it when: Discharging construction dewatering or other non-domestic water to Durham sanitary or storm sewers.
Why it's needed
- Protects regional sewers, water pollution control plants and the environment [DUR].
When to apply
- Before dewatering; coordinate with any MECP PTTW/EASR requirements.
Review time
Plan for about 20 business days. estimate
Documents for a complete application
- Discharge request with flows, duration and water quality results
- Treatment and monitoring plan
- Hydrogeological report; MECP PTTW/EASR confirmation
How to submit
- Durham Works Department, Sewer Use By-law office, 2400 Forbes Street, Whitby [DUR].
Forms and guides
- Region of Durham Sewer Use By-law 55-2013 (Region of Durham, by-law)
- Region of Durham Construction Specification 02240: Dewatering (Region of Durham, standard / specification)
Official pages
Track Region of Durham Sewer Use By-law Discharge Approval (dewatering) free.
Track this permit freeDeadlines in business days, email alerts before decisions are due, and your whole team in one place.
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.