
The Mississippi Valley and Rideau Valley Conservation Authorities administer Part 8 (Sewage systems approvals) of the Ontario Building Code on behalf of several watershed municipalities (listed below). This means your local conservation authority is responsible for reviewing septic designs and plans, issuing Building Permits for new and replacement sewage systems, and inspecting installations to ensure compliance with provincial regulations.
Learn more on how to submit your application by choosing the municipality where you are installing or replacing a Part 8 sewage system. Not listed below? Check with your municipality to learn about their septic approvals agent.
Beckwith
Township of Beckwith
Service begins October 1, 2022
- To access forms and fees, click here.
- To submit your application, email your digital forms to or deliver paper copies to:
Mississippi Valley Conservation Authority
10970 Highway 7
Carleton Place, Ontario
Hours - weekdays: 8:30 to 4:30
613-253-0006
- Watch your email inbox for directions on how to make payment.
Carleton Place
Town of Carleton Place
Service begins October 1, 2022
- To access forms and fees, click here.
- To submit your application, email your digital forms to or deliver paper copies to:
Mississippi Valley Conservation Authority
10970 Highway 7
Carleton Place, Ontario
Hours - weekdays: 8:30 to 4:30
613-253-0006
- Watch your email inbox for directions on how to make online payments.
Lanark Highlands
Township of Lanark Highlands
- To access forms and fees, click here.
- To submit your application, email your digital forms to or deliver paper copies to:
Mississippi Valley Conservation Authority
10970 Highway 7
Carleton Place, Ontario
Hours - weekdays: 8:30 to 4:30
613-253-0006
- Watch your email inbox for directions on how to make payment.
Mississippi Mills
Township of Mississippi Mills
- To access forms and fees, click here.
- To submit your application, email your digital forms to or deliver paper copies to:
Mississippi Valley Conservation Authority
10970 Highway 7
Carleton Place, Ontario
Hours - weekdays: 8:30 to 4:30
613-253-0006
- Watch your email inbox for directions on how to make online payments.
North Grenville
Township of North Grenville
- To access forms and fees, click here.
- To submit your application, email or deliver paper copies to:
- Rideau Valley Conservation Authority
3889 Rideau Valley Drive
Manotick, Ontario
Hours - weekdays: 8:30 to 4:30
613-692-3571 or 1-800-267-3504
- Watch your email inbox for directions on how to make payment.
Smiths Falls
Town of Smiths Falls
Service begins October 1, 2022
- To access forms and fees, click here.
- To submit your application, email or deliver paper copies to:
Rideau Valley Conservation Authority
3889 Rideau Valley Drive
Manotick, Ontario
Hours - weekdays: 8:30 to 4:30
613-692-3571 or 1-800-267-3504
- Watch your email inbox for directions on how to make payment.
Tay Valley
Tay Valley Township
- To access forms and fees, click here.
- To submit your application, email your digital forms to or deliver paper copies to:
Tay Valley Township 217 Harper Road Perth, Ontario Hours - weekdays: 8:30 to 4:00 613-267-5353
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Mississippi Valley Conservation Authority 10970 Highway 7 Carleton Place, Ontario Hours - weekdays: 8:30 to 4:30 613-253-0006 |
- Watch your email inbox for directions on how to make payment.
Westport
Village of Westport
Service begins October 1, 2022
- To access forms and fees, click here.
- To submit your application, email your digital forms to or deliver paper copies to:
Mississippi Valley Conservation Authority
10970 Highway 7
Carleton Place, Ontario
Hours - weekdays: 8:30 to 4:30
613-253-0006
- Watch your email inbox for directions on how to make payment.
Who should you call for septic information?

Eric Kohlsmith | Septic Inspector
10970 Highway 7 | Carleton Place | Ontario K7C 3P1
t. 613 253 0006 ext. 256 |
Terry K. Davidson, P. Eng. | RVCA Director, Regulations and Chief Building Official
3889 Rideau Valley Drive | Manotick | Ontario K4M 1A5
t. 613-692-3571 ext. 1107 |