Plumbing contractors in Prosser, WA

5 contractors · Updated Sep 27, 2026

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 Prosser.

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Coy's Plumbing LLC

Listed

Journey Level · Prosser, WA

License #COYSPPL784NB · $6,000 bond

Trek Plumbing LLC

Listed

Journey Level · Prosser, WA

License #TREKPPL758RC · $6,000 bond

W I T LLC

Listed

Residential · Prosser, WA

License #WITLLIT763KF · $6,000 bond

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Built from Washington State L&I public records, updated Sep 27, 2026. Subser doesn't do star ratings or reviews — just verified records.