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ContractorsRanked

Best Plumbers in Johnston, RI (2026)

467 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Johnston: Roto-Rooter Plumbing & Water Cleanup, CR Score 65/100; 4.8★ from 3,084 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Mr. Rooter Plumbing of Rhode Island, posts 24/7 hours; ranked #2 of 467.

  3. 9

    Most-reviewed: GEM Plumbing and Heating, 6,353 Google reviews at 4.6★, the most of 467 ranked; ranked #9.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

467 Johnston plumbers are ranked here by CR Score, from ten published factors. 136 are open 24/7, 255 open Saturdays and 170 open Sundays, based on posted hours. The median Google rating is 4.9★ across 467 rated businesses.

Most of this list also appears on the Plumbers in Providence ranking. See Plumbers in Providence

Top 10 plumbers in Johnston at a glance

Top 10 plumbers in Johnston at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Roto-Rooter Plumbing & Water Cleanup654.8★ (3,084)Providence, 5 mi away24/7Overall
2Mr. Rooter Plumbing of Rhode Island644.9★ (1,027)Warwick, 7 mi away24/7Emergencies
3STP Plumbing625.0★ (484)Blackstone, 14 mi away24/7—
4Shamrock Well and Pump LLC614.9★ (354)Cumberland, 11 mi away24/7—
5SOS Plumbing & Heating614.8★ (244)West Warwick, 7 mi away24/7—
6Thumbs Up Plumbing614.8★ (248)Smithfield, 7 mi away24/7—
7Quahog Plumbing614.9★ (479)Swansea, 13 mi away24/7—
8G&C Plumbing & Heating615.0★ (602)Blackstone, 18 mi away24/7—
9GEM Plumbing and Heating614.6★ (6,353)Lincoln, 7 mi away24/7Most reviews
10Sureflow Rooter Service And Drain Cleaning614.9★ (80)Providence, 5 mi away24/7—

The 467 best plumbers in Johnston, 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.

  3. #3 STP Plumbing

    Based in Blackstone, 14 mi away

    62/100CR Score

    Ranked #3 because of its Google rating and trade focus: 5.0★ from 484 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 484 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    544 Summer Pl, Blackstone, MA 01504
    View profile for STP Plumbing(508) 257-1407

  6. #6 Thumbs Up Plumbing

    Based in Smithfield, 7 mi away

    61/100CR Score

    Ranked #6 because of its Google rating and trade focus: 4.8★ from 248 Google reviews, listed on Google as “Plumber”.

    • 4.8★ from 248 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    3 Industrial Dr Unit 3E Unit 3E, Smithfield, RI 02917
    View profile for Thumbs Up Plumbing(401) 369-9020

  7. #7 Quahog Plumbing

    Based in Swansea, 13 mi away

    61/100CR Score

    Ranked #7 because of its Google rating and trade focus: 4.9★ from 479 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 479 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2135 Grand Army of the Republic Hwy, Swansea, MA 02777
    View profile for Quahog Plumbing(401) 246-7221

  16. #16 Josh's Plumbing Services - Water Heater Installation and Replacement - Navien On Demand and Hybrid - Foster, RI Office

    Based in East Greenwich, 7 mi away

    60/100CR Score

    Ranked #16 because of its Google rating and trade focus: 5.0★ from 53 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 53 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for Josh's Plumbing Services - Water Heater Installation and Replacement - Navien On Demand and Hybrid - Foster, RI Office(401) 327-2319

  18. #18 Wicked Plumbing

    Based in Somerset, 19 mi away

    59/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.9★ from 349 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 349 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    228 Lepes Rd, Somerset, MA 02726
    View profile for Wicked Plumbing(508) 272-1196

  23. #23 The Pipe King

    Based in Attleboro, 12 mi away

    59/100CR Score

    Ranked #23 because of its Google rating and trade focus: 5.0★ from 63 Google reviews, listed on Google as “Plumber”.

    • 5.0★ from 63 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    View profile for The Pipe King(866) 868-0679

  24. #24 Anne the Plumber

    Based in Blackstone, 2 mi away

    59/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.9★ from 429 Google reviews, listed on Google as “Plumber”.

    • 4.9★ from 429 Google reviews
    Hours
    Mon–Fri 8:30 AM–4:30 PM · Sat–Sun closed
    View profile for Anne the Plumber(401) 430-0532

Plumbers ranked #29 to #29

#1 to #25 are shown in full above. Here are #29 to #29, in CR Score order; each links to its profile. We publish the top 29 of 467 ranked plumbers here; the rest are on their profiles.

plumbers in Johnston, ranks 29 to 29
RankBusinessCR ScoreGoogle ratingDistance
29J&O Plumbing584.5★ (48)8 mi

How much do plumbers cost in Johnston?

National price ranges in USD, not adjusted for Johnston. Each row names its basis and the month we checked it.

How much do plumbers cost in Johnston?
JobLowTypicalHighBasisChecked
Water heater replacement$882$1,348$1,826Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national rangeOctober 2026

How to check a plumber's license in Rhode Island

In Rhode Island, Rhode Island Department of Labor and Training, Professional Regulation licenses Plumbing work: water supply, drain, waste and vent piping and fixtures.

  1. Check that the status is active and the name matches the contract or truck.
  2. 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 Johnston plumbers

We scored 467 Johnston 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 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Johnston data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Plumbers in Johnston: frequently asked questions

Who is the best plumber in Johnston?

By CR Score, the highest-ranked plumber in Johnston, RI is Roto-Rooter Plumbing & Water Cleanup with a CR Score of 65/100. It has 4.8★ from 3,084 Google reviews. It is open 24/7. Mr. Rooter Plumbing of Rhode Island (#2) and STP Plumbing (#3) follow. We ranked 467 plumbers on ten factors, last updated October 22, 2026.

How many plumbers are there in Johnston?

ContractorsRanked ranks 467 plumbers serving Johnston, RI. 1 of them is based in Johnston; the rest serve it from nearby towns. Counts are as of October 2026.

Which plumbers in Johnston are open 24/7?

136 ranked plumbers in Johnston post 24/7 hours. The highest-ranked are Roto-Rooter Plumbing & Water Cleanup (#1), Mr. Rooter Plumbing of Rhode Island (#2) and STP Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Johnston work on weekends?

255 of 467 ranked plumbers post Saturday hours and 170 post Sunday hours. The highest-ranked open Saturdays are Roto-Rooter Plumbing & Water Cleanup (#1), Mr. Rooter Plumbing of Rhode Island (#2) and STP Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check a plumber's license in Rhode Island?

In Rhode Island, Rhode Island Department of Labor and Training, Professional Regulation handles licensing and covers Plumbing work: water supply, drain, waste and vent piping and fixtures.

How much does water heater replacement cost in Johnston?

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 Johnston. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Johnston plumbers have?

The median Google rating among 467 rated plumbers in Johnston is 4.9★, with a median of 17 reviews. GEM Plumbing and Heating has the most, 6,353 reviews, and ranks #9. 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 Johnston

  1. October 2026: CR Scores recalculated for 467 plumbers serving Johnston.
  2. October 2026: 2 duplicate listings merged.

More plumbers and Johnston pages

Other trades in Johnston