education & training
maintenance & reinspections
manufacturers & suppliers
membership directory
MMAH information
MOE approvals branch
MOE septage information
OOWA insurance program
OOWA registered professional program
provincial policy statement
regional meeting
septic system information

All OOWA membership information is proprietary and may not be copied or used for solicitation of members for products or services.

MOE Approvals Branch
Environmental Approvals for Business

boxOntario is introducing a new online system for faster, smarter and more streamlined environmental approvals. Starting October 31, 2011, new online application and self registry options make it easier for businesses to comply with environmental laws.

In the new system, an Environmental Compliance Approval (ECA) replaces a Certificate of Approval (C of A)

To see if your business is eligible for the registry visit

For more information: Visit the MOE website at www.ontario.ca/environmentalapprovals
or call 416-314-8001 or 1-800-461-6290


Any facility that releases emissions to the atmosphere, discharges contaminants to ground or surface water, provides potable water supplies, or stores, transports or disposes of waste must have a Certificate of Approval before it can operate lawfully. It is the responsibility of owners and operators of these facilities to apply for and obtain Certificates of Approval.

Staff of the Ministry of the Environment examine each facility proposal, through the Certificate of Approval process, to ensure that the environment is not adversely affected by these types of activities.

Each completed Certificate of Approval addresses matters that fall within the mandate of the ministry, focuses on site specific characteristics relevant to each proposal and contains enforceable requirements for each facility to ensure the protection of human health and the natural environment.

Certificates of Approval help to inform and educate applicants who want to operate such facilities. They are also used by ministry staff to ensure the operation of facilities complies with environmental laws. Certificates of Approval, once issued, are available to the public online.

Applications for Certificates of Approval should be made to:

Environmental Assessment and Approvals Branch
Ministry of the Environment
2 St. Clair Ave W, Floor 12A
Toronto, ON M4V 1L5

For more information about Certificates of Approval or to get an application package, please contact the Environmental Assessment and Approvals Branch at 416-314-8001 in Toronto, toll free at 1-800-461-6290, or by e-mail at EAABGen@ene.gov.on.ca.

Green Facts
Certificates of Approval – Industrial Sewage Works PDF

Green Facts
Small Private Subsurface Sewage Disposal Systems Approvals Requirements PDF

Green Facts
Large Subsurface Sewage Disposal Works

Les grandes stations d’épuration des eaux d’égout avec rejet souterrain