Contractor profiles
- Dave Wright Excavating
- David Brown Construction
- David Brown Construction Ltd.
- Davidson Land & Water Solutions
- Dawn J Weber
- DBO Expert
- Dedicated Environmental Services
- Denby Environmental Services
- Denby Environmental/Knoop Excavating
- Derek Roberts Excavating Ltd.
- Deson Construction
- Devish Design Services Inc
- Dig'R Wright Excavating Inc
- Dillman Sanitation Ltd.
- Dimensional Analysis
- Dimensional Analysis, Onsite Wastewater Management – Pierre Savard
- Direct Genetics Inc o/a Jones Pumping and o/a Coulter Pumping
- Dirty Deeds Contracting Inc
- District Septic Tank Pumping
- DLK Septic Services
- DLK Septic Services Inc.
- Dorset Sanitation
- Dover Port-A-John
- Drumax Construction
- Dryden Excavation Inc
- DSI Williams Excavating – Spring Williams
- Dundas Excavating and Septic Service
- Durham College
- Durham Regional Health Department
- Duyck Excavation Inc
- DW Land Development Services Inc.
- Dwyer Landscaping LTD
- Dynamic Excavating Inc.
- Dynamic Septic & Drainage
- E & J Septic
- E. Corbiere and Sons Constracting
- E. Corbiere and Sons Contracting
- E.C. Carruthers & Sons Utility Construction Ltd. – François Dagenais
- E2TECH Services
- Eady Home Inspections