Septic, Excavation and Land Clearing in Frontenac County
M. Riddle Excavating installs septic systems, digs foundations, clears land and builds driveways across Frontenac County, and our Riddle Aggregates yard is in Inverary. Since September 1, 2023, each of the four Frontenac townships handles its own septic permits: South Frontenac, Central Frontenac, North Frontenac and Frontenac Islands. Here is who to contact in each, checked against each township’s own website on October 29, 2026.
Who Issues Septic Permits in Each Frontenac Township
| Township | Who issues septic permits | Official page |
|---|---|---|
| South Frontenac | The Township’s Building Officials. Applications to building@southfrontenac.net or 613-376-3027. | South Frontenac sewage systems |
| Central Frontenac | The Township of Central Frontenac, since September 1, 2023. Applications go to the Township’s building staff in Sharbot Lake. | Central Frontenac sewage systems |
| North Frontenac | The Township of North Frontenac, issuing and inspecting septic permits in house since September 1, 2023. Apply in person, by email or through Cloudpermit. | North Frontenac building permits |
| Frontenac Islands | The Township of Frontenac Islands. Sewage system permit applications go through Cloudpermit or on paper at the Wolfe Island or Howe Island municipal office. | Frontenac Islands building and renovating |
Septic permits are not issued by KFL&A Public Health, which stopped handling them at the end of 2020. Fees and forms change, so confirm them with your township before you apply.
What Changed in 2023
South Frontenac used to accept and issue septic permits for the other three townships as well. Its own page now says that effective September 1, 2023, it no longer accepts or issues sewage system permits or provides plans review under Part 8 of the Ontario Building Code for North Frontenac, Central Frontenac and Frontenac Islands. If your property is in one of those three, apply to your own township. For more on the process, read our Frontenac County septic permit guide and our guide to septic setback distances in Frontenac County.
Our Projects in Frontenac County
- Eljen septic system installation in Inverary: excavation to final grade, with the Eljen system trenches, distribution box, concrete tank and pump chamber.
- New septic system install in Harrowsmith: removal of old concrete, tank placement, trenching for the drain lines and final grading to leave the property level.
- Site clearing and driveway grubbing in Parham: clearing and grubbing a wooded lot for a new home, then shaping a new driveway on a compacted gravel base.
Inverary and Harrowsmith are in South Frontenac; Parham is in Central Frontenac. See all of our septic system projects.
Our Services in Frontenac County
- Septic system design and installation, repair and replacement
- Land clearing for new builds, driveways and septic beds
- Driveways and private access roads, ditches and culverts
- Basement and foundation excavation
- Grading and drainage, including French drains and weeping tile
- Water and sewer lines
For digging in rocky ground, read about rock excavation in Frontenac County.
Topsoil and Gravel From Inverary
Our yard, Riddle Aggregates, is at 1780 Washburn Road in Inverary. It sells screened topsoil, sand and gravel for pickup or delivery, Monday to Saturday. See topsoil and gravel.
Get a free quote or call 613-545-7955, Monday to Friday, 7 am to 5 pm.
Get a Free Quote in Frontenac County
Tell us which township your property is in and what you need done. Or call the office at 613-545-7955, Monday to Friday, 7 am to 5 pm.
Office Hours
- Monday - Friday: 7AM - 5PM
Speak to Our Team Today
- Phone: 613-545-7955
- Email: mriddleexcavating@outlook.com
Frequently Asked Questions About Septic and Excavation in Frontenac County
The Township of South Frontenac’s Building Officials. Applications go to building@southfrontenac.net or 613-376-3027.
No. Since September 1, 2023, South Frontenac no longer accepts or issues sewage system permits for the other three townships. Each now handles its own.
Each township issues its own. Central Frontenac has accepted and issued sewage system permits since September 1, 2023, and North Frontenac issues and inspects septic permits in house.
Apply to the Township of Frontenac Islands, through Cloudpermit or on paper at the Wolfe Island or Howe Island municipal office.
No. KFL&A Public Health stopped handling septic permits at the end of 2020. Permits now come from the township building department.