| A |
| Aries Plumbing and Heatingnot edited since 2018 | 2615 Lancaster Road, Gloucester | | | |
| Arrow Mech Plumbingnot edited since 2018 | 5330 Canotek Road, Gloucester | | | |
| B |
| Bath Fitternot edited since 2018 | 3205 Swansea Crescent, Alta Vista | | | |
| BE Plumbingnot edited since 2018 | 2445 Sheffield Road, Gloucester | | | |
| Bedard Plumbing Servicesnot edited since 2018 | 5450 Canotek Road, Blackburn Hamlet | | | |
| BMCL Plumbing & Heatingnot edited since 2019 | 244 Westbrook Road, Stittsville | | | |
| Boone Plumbing & Heatingnot edited since 2018 | 1282 Algoma Road, Gloucester | | | |
| C |
| Central Plumbing Servicesnot edited since 2022 | 246 Westbrook Road, Stittsville | | | |
| D |
| Dr. Pipe Drain and Plumbing | 168 Point Prim Crescent, Barrhaven | ottawaplumbernow.com | | |
| DS Plumbingnot edited since 2018 | 14 Bexley Place, Bells Corners | | | |
| E |
| Environmental Plumbing | 610 Somerset Street West, Centretown | environmentalplumbing.ca | | |
| Environmental Plumbing | 326 Warden Avenue, Orléans | environmentalplumbing.ca | | |
| Environmental Plumbing | 383 Gallantry Way, Kanata | environmentalplumbing.ca | | |
| Environmental Plumbing | 500 Edgeworth Avenue, Nepean | environmentalplumbing.ca | | |
| Environmental Plumbing | 14 Chisholm Court, Kanata | environmentalplumbing.ca | | |
| Environmental Plumbing | 264 Kilspindie Ridge, Manotick | environmentalplumbing.ca | | |
| F |
| Fast Plumber | 116 Albert Street, Centretown | fastplumber.ca | | |
| Flash Rooternot edited since 2018 | 135 Iber Road, Stittsville | | | |
| Francis Plumbing Heating & Cooling | 894 Boyd Avenue, Nepean | francisplumbing.com | | |
| G |
| Giroux Plumbing & Heatingnot edited since 2018 | 5330 Canotek Road, Gloucester | | | |
| GV Mechanicalnot edited since 2019 | 5515 Canotek Road, Blackburn Hamlet | | | |
| H |
| H O Wright & Sonsnot edited since 2018 | 2383 Church Street, North Gower | | | |
| J |
| JI Plumbing and Heatingnot edited since 2018 | 1566 Laperriere Avenue, Westboro | | | |
| John The Plumbernot edited since 2020 | 2688 Conn Street, Nepean | johntheplumber.ca | | |
| John The Plumbernot edited since 2022 | 190 Tapadero Avenue, Stittsville | johntheplumber.ca | | |
| John The Plumbernot edited since 2022 | 77 Sunnybrooke Drive, Kanata | johntheplumber.ca | | |
| John The Plumber | 18 Montana Way, Barrhaven | johntheplumber.ca | | |
| M |
| Mannion Plumbing and Heatingnot edited since 2019 | 1417 Cyrville Road, Gloucester | | | |
| P |
| Paquette Mechanical Plumbing & Heatingnot edited since 2018 | 2555 Blackwell Street, Gloucester | | | |
| Pentech Plumbing & Mechanical LTD.not edited since 2020 | 15 Fitzgerald Road, Bells Corners | pentechplumbingmechanical.com | | |
| S |
| Scooter Rooternot edited since 2018 | 2739 Stevenage Drive, South Keys | | | |
| T |
| Tourangeau Mechanicalnot edited since 2018 | 2555 Blackwell Street, Gloucester | | | |
| V |
| Valente Plumbingnot edited since 2019 | 2295 Stevenage Drive, South Keys | | | |
| W |
| Wolseleynot edited since 2018 | 2495 Lancaster Road, Gloucester | | | |