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King County · Updated August 2026

Best Sump Pump Service in Shoreline, WA

Sump pumps keep crawl spaces and basements dry — near-mandatory equipment in much of the wet side, where winter water tables rise into footings. Service covers replacement, battery backups, and drainage tie-ins.

$400–$1,500
Typical cost, installed pump

Wet-side market range — get itemized quotes before work starts

Call sooner, not later, if:
  • Standing water or persistent damp in crawl space/basement
  • A pump older than 7–10 years or one that short-cycles
  • Adding battery backup — outages and storms arrive together here

Top-Rated Companies for Sump Pump Service in Shoreline

Companies whose focus matches this work are listed first, then Shoreline's other top-rated plumbers. Same no-pay-to-play ranking as everywhere on Wetside Plumbing — the formula.

#1 · SHORELINE

Drain-Tech Locating Specialist

5.0 rating · 2 Google reviews · Plumber
902 N 149th St, Shoreline, WA 98133
#3 · SHORELINE

Professionals Plumbers Shoreline

5.0 rating · 9 Google reviews · Plumber
657 NW Richmond Beach Rd, Shoreline, WA 98177
#4 · SHORELINE

Fast Response Plumbers Shoreline

5.0 rating · 9 Google reviews · Plumber
1223 NE 148th St, Shoreline, WA 98155
#6 · SHORELINE

Pro Plumber Shoreline

5.0 rating · 5 Google reviews · Plumber
935 N 175th St Suite 103, Shoreline, WA 98133
#7 · SHORELINE

Ontime Plumbing & Repipe

5.0 rating · 4 Google reviews · Plumber
1201 N 175th St Unit 138, Shoreline, WA 98133
#8 · SHORELINE

Balder Plumbing & Heating Repair

5.0 rating · 1 Google review · Plumber
17831 Interlake Ave N, Shoreline, WA 98133
#9 · SHORELINE

One Stop Plumbing Inc

4.5 rating · 2 Google reviews · Plumber
19830 Aurora Ave N, Shoreline, WA 98133
#10 · SHORELINE

Home Services at The Home Depot

4.1 rating · 9 Google reviews · General contractor
1335 N 205th St, Shoreline, WA 98133, United States
#11 · SHORELINE

Crown Plumbing

1.0 rating · 1 Google review · Plumber
18517 Linden Ave N, Shoreline, WA 98133
✓ WA License VerifiedL&I #CROWNP*787P7 · check it yourself ↗

Google Business data, 2026-08-07. See the full Shoreline ranking →

Also searched as: sump pump back up repair and installation, sump pump installation, sump pump repair, sump pumps repair.

Before You Call

Sump Pump Service: Common Questions

Do I need a battery backup?

If your basement floods when power fails — and wet-side storms take power and drop rain simultaneously — yes. A backup pump or battery system is cheap insurance against exactly the night you need pumping most.

Why does my pump run constantly in winter?

High seasonal water table. Constant cycling is normal in wet months, but verify the check valve works and the discharge runs well away from the foundation, or you're pumping the same water in circles.

How do I check a company's license?

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.

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