66/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 1,379 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 1,379 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 13306 SE 30th St, Bellevue, WA 98005
Best Plumbers in Mercer Island, WA (2026)
635 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Mercer Island: Homeservice Plumbers, CR Score 66/100; 5.0★ from 1,379 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Ready Rooter, posts 24/7 hours; ranked #2 of 635.
- 44
Most-reviewed: South West Plumbing, Heating, Air, & Electric, 5,204 Google reviews at 4.6★, the most of 635 ranked; ranked #44.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
635 Mercer Island plumbers are ranked here by CR Score, from ten published factors. 286 are open 24/7, 440 open Saturdays and 359 open Sundays, based on posted hours. The median Google rating is 4.9★ across 635 rated businesses.
Top 10 plumbers in Mercer Island at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Homeservice Plumbers | 66 | 5.0★ (1,379) | Bellevue, 3 mi away | 24/7 | Overall |
| 2 | Ready Rooter | 66 | 4.9★ (1,621) | Bellevue, 3 mi away | 24/7 | Emergencies |
| 3 | Mr. Rooter Plumbing of Seattle | 65 | 4.8★ (2,646) | Seattle, 6 mi away | 24/7 | — |
| 4 | Bee's Plumbing and Heating | 63 | 4.8★ (3,274) | Seattle, 7 mi away | Sat · Sun · Evenings | — |
| 5 | American Rooter Sewer & Drain Service LLC | 63 | 5.0★ (316) | Bellevue, 4 mi away | 24/7 | — |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.7★ (1,021) | Bellevue, 5 mi away | 24/7 | — |
| 7 | 2 Sons Plumbing, Sewer, Septic, Electric, Heating & Air | 63 | 4.9★ (3,532) | Seattle, 10 mi away | Sat · Sun · Evenings | — |
| 8 | Washington Rooter Sewer & Drain Service LLC | 63 | 5.0★ (310) | Bellevue, 6 mi away | 24/7 | — |
| 9 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.8★ (613) | Renton, 6 mi away | 24/7 | — |
| 10 | Kirkland Rooter | 62 | 4.9★ (510) | Kirkland, 10 mi away | 24/7 | — |
The 635 best plumbers in Mercer Island, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
#2 Ready Rooter
Based in Bellevue, 3 mi away
66/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 1,621 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,621 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 13222 SE 30th St Suite A-1, Bellevue, WA 98005
Based in Seattle, 6 mi away
65/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 2,646 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 2,646 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2000 S 116th St, Seattle, WA 98168
Based in Seattle, 7 mi away
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 3,274 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 3,274 Google reviews
- Hours
- Mon–Fri 6 AM–8:30 PM · Sat–Sun 7 AM–8 PM
- Address
- 2401 SW Alaska St, Seattle, WA 98106
Based in Bellevue, 4 mi away
63/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 316 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 316 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1623 151st Ave SE, Bellevue, WA 98007
Based in Bellevue, 5 mi away
63/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 1,021 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 1,021 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1130 140th Ave NE Ste. 300, Bellevue, WA 98005
Based in Seattle, 10 mi away
63/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 3,532 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 3,532 Google reviews
- Hours
- Mon–Sun 3 AM–11 PM
- Address
- 2208 NW Market St #316a, Seattle, WA 98107
Based in Bellevue, 6 mi away
63/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 310 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 310 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2018 156th Ave NE Suite 100 Bldg. F, Bellevue, WA 98007
Based in Renton, 6 mi away
63/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 613 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 613 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4508 NE 4th St Ste A, Renton, WA 98059
#10 Kirkland Rooter
Based in Kirkland, 10 mi away
62/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 510 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 510 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 9827 NE 120th Pl, Kirkland, WA 98034
Based in Seattle, 10 mi away
62/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 319 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 319 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1141 NW 53rd St, Seattle, WA 98107
Based in Seattle, 8 mi away
62/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 716 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 716 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1817 Queen Anne Ave N # 312, Seattle, WA 98109
Based in Woodinville, 12 mi away
62/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 2,100 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 2,100 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 8 AM–5 PM
- Address
- 16120 Redmond - Woodinville Rd NE, Woodinville, WA 98072
Based in Seattle, 10 mi away
62/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 636 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 636 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4778 Shilshole Ave NW, Seattle, WA 98107
#15 O'Neill Plumbing
Based in Seattle, 8 mi away
61/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.8★ from 338 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 338 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6056 California Ave SW, Seattle, WA 98136
#16 Septic Response
Based in Kirkland, 8 mi away
61/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 213 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 213 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 672 7th Ave, Kirkland, WA 98033
Based in Seattle, 10 mi away
61/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 218 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 218 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 10202 5th Ave NE Suite 200, Seattle, WA 98125
Based in Seattle, 5 mi away
61/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 89 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 89 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 312 21st Ave, Seattle, WA 98122
Based in Seattle, 10 mi away
61/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.8★ from 409 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 409 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 10710 Lake City Way NE, Seattle, WA 98125
Based in Seattle, 5 mi away
61/100CR ScoreRanked #20 because of its Google rating and review volume: 5.0★ from 895 Google reviews.
- 5.0★ from 895 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 825 S Stacy St, Seattle, WA 98134
Based in Tukwila, 6 mi away
61/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 579 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 579 Google reviews
- Hours
- Mon–Sat 6 AM–11:30 PM · Sun 6 AM–5 PM
- Address
- 13130 44th Ave S Unit 1, Tukwila, WA 98168
Based in Parkland, 6 mi away
61/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 95 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 95 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#23 Best Plumbing
Based in Seattle, 10 mi away
61/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.6★ from 787 Google reviews, listed on Google as “Plumber”.
- 4.6★ from 787 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8820 Aurora Ave N, Seattle, WA 98103
#24 Odyssey Plumbing
Based in Seattle, 9 mi away
61/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 143 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3901 NW Leary Wy, Seattle, WA 98107
Based in Lynnwood, 17 mi away
61/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 781 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 781 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 20907 Hwy 99, Lynnwood, WA 98036
Plumbers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 635 ranked plumbers here; the rest are on their profiles.
Also serving Mercer Island
20 more plumbers within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Beacon Plumbing, Heating, Electrical & Mechanical Inc - Seattle | 4.5★ (2,956) | 5 mi |
| Blackstreet General Contracting, LLC | In Mercer Island | |
| Brike Construction and Excavation | 5.0★ (2) | 6 mi |
| Fischer Plumbing | 5.0★ (2) | 8 mi |
| Fox Plumbing, Heating & Cooling (now a Gene Johnson company) | 4.8★ (2,264) | 11 mi |
| I Need A Plumber Now and Sewer Services | 5.0★ (2) | 6 mi |
| Lakeside Plumbing & Heating | 3.5★ (2) | 13 mi |
| Love Plumbing & Remodel | 5.0★ (2) | 16 mi |
| Neptune Plumbing | 5.0★ (2) | 5 mi |
| Pac West Pipeworks | 5.0★ (2) | 9 mi |
| Plumbing America | 4.5★ (2) | 8 mi |
| Ridgid Plumbing and Drain Services | 4.8★ (89) | 3 mi |
| Rodriguez Plumbing LLC | 5.0★ (2) | 14 mi |
| Rudys Plumbing Inc. | 3.0★ (2) | In Mercer Island |
| Shalom Plumbing | 5.0★ (80) | 8 mi |
| Steve’s Plumbing, LLC | 4.9★ (136) | 6 mi |
| Stream Water Heaters | 5.0★ (2) | 7 mi |
| The Plumbing Joint Inc. | 5.0★ (2) | 5 mi |
| Wadleigh Water and Sewer | 5.0★ (2) | 16 mi |
| Watson Dave | 5.0★ (2) | 8 mi |
How much do plumbers cost in Mercer Island?
National price ranges in USD, not adjusted for Mercer Island. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Water heater replacement | $882 | $1,348 | $1,826 | Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
How to check a plumber's license in Washington
In Washington, Washington State Department of Labor & Industries licenses Contractor registration and plumber certificates.
- Search the business name or license number on the Washington State Department of Labor & Industries license lookup.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
How we ranked Mercer Island plumbers
We scored 635 Mercer Island plumbers on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 23, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Mercer Island data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Plumbers in Mercer Island: frequently asked questions
Who is the best plumber in Mercer Island?
By CR Score, the highest-ranked plumber in Mercer Island, WA is Homeservice Plumbers with a CR Score of 66/100. It has 5.0★ from 1,379 Google reviews. It is open 24/7. Ready Rooter (#2) and Mr. Rooter Plumbing of Seattle (#3) follow. We ranked 635 plumbers on ten factors, last updated October 23, 2026.
How many plumbers are there in Mercer Island?
ContractorsRanked ranks 635 plumbers serving Mercer Island, WA. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which plumbers in Mercer Island are open 24/7?
286 ranked plumbers in Mercer Island post 24/7 hours. The highest-ranked are Homeservice Plumbers (#1), Ready Rooter (#2) and Mr. Rooter Plumbing of Seattle (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Mercer Island work on weekends?
440 of 635 ranked plumbers post Saturday hours and 359 post Sunday hours. The highest-ranked open Saturdays are Homeservice Plumbers (#1), Ready Rooter (#2) and Mr. Rooter Plumbing of Seattle (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check a plumber's license in Washington?
In Washington, Washington State Department of Labor & Industries handles licensing and covers Contractor registration and plumber certificates. Search the business or license number at https://secure.lni.wa.gov/verify/.
How much does water heater replacement cost in Mercer Island?
Water heater replacement typically costs $882 to $1,826, with $1,348 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Mercer Island. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Mercer Island plumbers have?
The median Google rating among 635 rated plumbers in Mercer Island is 4.9★, with a median of 27 reviews. South West Plumbing, Heating, Air, & Electric has the most, 5,204 reviews, and ranks #44. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank plumbers?
Each plumber gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Mercer Island
- October 2026: CR Scores recalculated for 635 plumbers serving Mercer Island.
- October 2026: 4 duplicate listings merged.
More plumbers and Mercer Island pages
Plumbers near Mercer Island
- Plumbers in Bellevue, WA632 ranked
- Plumbers in Newcastle, WA635 ranked
- Plumbers in Bryn Mawr-Skyway, WA663 ranked
- Plumbers in West Lake Sammamish, WA593 ranked
- Plumbers in Seattle, WA608 ranked
- Plumbers in Renton, WA656 ranked
- Plumbers in Riverton, WA663 ranked
- Plumbers in Tukwila, WA663 ranked
- Plumbers in Boulevard Park, WA662 ranked
- Plumbers in White Center, WA637 ranked
Other trades in Mercer Island
- Roofers in Mercer Island1141 ranked
- Electricians in Mercer Island574 ranked
- HVAC contractors in Mercer Island564 ranked
- General contractors in Mercer Island1510 ranked
- Painters in Mercer Island522 ranked
- Landscapers in Mercer Island366 ranked
- Handymen in Mercer Island195 ranked
- Kitchen remodelers in Mercer Island776 ranked
- Bathroom remodelers in Mercer Island762 ranked
- Flooring contractors in Mercer Island495 ranked
- Tile installers in Mercer Island140 ranked
- Drywall contractors in Mercer Island44 ranked
- Concrete contractors in Mercer Island314 ranked
- Fence contractors in Mercer Island290 ranked
- Deck builders in Mercer Island451 ranked
- Siding contractors in Mercer Island357 ranked
- Window installers in Mercer Island359 ranked
- Gutter installers in Mercer Island390 ranked
- Insulation contractors in Mercer Island170 ranked
- Solar installers in Mercer Island68 ranked
- Garage door repair companies in Mercer Island246 ranked
- Foundation repair companies in Mercer Island133 ranked
- Tree services in Mercer Island332 ranked
- Masonry contractors in Mercer Island200 ranked
- Water damage restoration companies in Mercer Island507 ranked
- Home builders in Mercer Island617 ranked
- Demolition contractors in Mercer Island114 ranked
- All contractors in Mercer Island