About Underwood Construction Ltd.
Underwood Construction Ltd. is a family-owned excavation and construction company in Owen Sound serving Grey and Bruce Counties for over 20 years. Its septic team designs and installs new systems and repairs or replaces existing ones, with licensed experts guiding customers from the first consultation through to activation. Certified designers and experienced installers work on staff. It partners with Ecoflo, Waterloo Biofilter, Norweco and Enviro Septic Systems Inc., and it is a member of the Ontario Onsite Wastewater Association. Other services include site preparation, lot clearing, grading, drainage, shoreline work, trucking, and aggregate and topsoil delivery. Residential, commercial, municipal and agricultural clients are served. Hours are posted and wheelchair accessible parking is available. Rated 4.8 from 9 Google reviews, 8 of them five stars.
Services and details
Works on septic systems
YesNew system installation
YesSystem design and permits
YesAdvanced or tertiary treatment
YesStates a licence or BCIN
YesIn the OOWA member directory
YesCommercial and farm work
Yes
No information yet on septic tank pumping, leaching bed repair or replacement, septic inspections, maintenance programs, emergency service, cottage and seasonal properties, portable toilet rentals. The website did not say; call and ask.
Contact
- (519) 376-9503
- 162153 A Line, Owen Sound, ON N4K 5N7
- Website
- View on Google Maps
Hours
- Monday
- 8AM-5PM
- Tuesday
- 8AM-5PM
- Wednesday
- 8AM-5PM
- Thursday
- 8AM-5PM
- Friday
- 8AM-5PM
- Saturday
- Closed
- Sunday
- Closed
Listing compiled from public sources on 2026-10-09. Report a correction or request removal. Back to septic companies in Owen Sound.
