Sanitation System/Side Sewers contractors in Spokane, WA
Septic and side sewer contractors install and repair on-site sanitation systems and the sewer lines that connect buildings to the main. Washington currently lists 3 Sanitation System/Side Sewers contractors registered in Spokane.
Claimed and verified listings appear first.
Downriver Septic LLC
ListedSanitation System / Side Sewers · Spokane, WA
License #DOWNRSL789C2 · $15,000 bond
Rich Ulias Excavation LLC
ListedSanitation System / Side Sewers · Spokane, WA
License #RICHUUE805Q1 · $15,000 bond
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Other trades in Spokane
- General (4,337)
- Electrical (354)
- Painting/Wallcovering (252)
- Floor Covering and Counter Tops (182)
- Plumbing (123)
- Landscaping (89)
- Concrete (85)
- Framing and Rough Carpentry (71)
- Tile, Ceramic, Mosaic, Natural and MFG Stone (59)
- Heating/Vent/Air-Conditioning and Refrig (HVAC/R) (59)
- Plumbing Specialty (58)
- Cabinets, Millwork and Finish Carpentry (54)
How to read confidence grades and license statuses
Built from Washington State L&I public records, updated Sep 28, 2026. Subser doesn't do star ratings or reviews — just verified records.