Plumbing contractors in Covington, WA
Plumbing contractors install and repair the water supply, drain, waste, and vent systems that carry water through a building. Washington currently lists 5 Plumbing contractors registered in Covington.
Claimed and verified listings appear first.
Apex Plumbing LLC
ListedJourney Level · Covington, WA
License #APEXPPL748D4 · $6,000 bond
Mknk Legacy Plumbing LLC
ListedResidential · Covington, WA
License #MKNKLLP751MN · $6,000 bond
Retrofit Plumbing LLC
ListedJourney Level · Covington, WA
License #RETROPL792N5 · $6,000 bond
Walding Plumbing LLC
ListedJourney Level · Covington, WA
License #WALDIPL776RO · $6,000 bond
Browse more
Other trades in Covington
- General (274)
- Floor Covering and Counter Tops (25)
- Tile, Ceramic, Mosaic, Natural and MFG Stone (25)
- Electrical (17)
- Painting/Wallcovering (16)
- Siding (13)
- Landscaping (10)
- Heating/Vent/Air-Conditioning and Refrig (HVAC/R) (7)
- Cabinets, Millwork and Finish Carpentry (7)
- Welding and Ornamental Metal (4)
- Excavation, Grading and Land Clearing (3)
- Concrete (3)
Related trades
How to read confidence grades and license statuses
Built from Washington State L&I public records, updated Sep 26, 2026. Subser doesn't do star ratings or reviews — just verified records.