#1 · MERCER ISLAND
Drain cleaning clears blockages from sink, tub, and mainline drains using augers (snakes) or hydro jetting. On the wet side, the usual culprits are grease, hair, wipes, and — in older neighborhoods — tree roots finding their way into aging lines.
Wet-side market range — get itemized quotes before work starts
Companies whose focus matches this work are listed first, then Mercer Island's other top-rated plumbers. Same no-pay-to-play ranking as everywhere on Wetside Plumbing — the formula.
Includes pros based nearby in Seattle who serve Mercer Island.
Google Business data, 2026-08-07. See the full Mercer Island ranking →
Also searched as: best drain cleaner, clogged drain, clogged drain cleaning, clogged plugged drains, clogged sink repair, clogging drain.
Same family of work. 'Rooter' historically means cutting tree roots out of drain lines with a bladed auger; drain cleaning covers all blockage removal, including hydro jetting. Companies with 'rooter' in the name do both.
Skip it. Chemical openers rarely clear real clogs, damage older pipes with repeated use, and make the drain hazardous for whoever works on it next. A $20 hand auger is more effective and safer.
Ask for their Washington L&I contractor number and verify it at secure.lni.wa.gov/verify — active license, bond, and insurance. Listings above with a green badge are ones we've already matched to an active license in state records.