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ContractorsRanked

Emergency Plumbers in Dorchester, ON (2026)

Top 50 of 132 plumbers, in emergency orderUpdated 0 paid placements in this rankingHow we rank

24 of the 50 plumbers on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

Burst pipe or major leak: shut off the main water valve first. If water reaches outlets or the panel, stay clear and call 911.

The short answer

  1. 1

    #1 for emergency plumbing in Dorchester: Mr. Rooter Plumbing of London ON, open 24/7.

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

Top emergency plumbers in Dorchester at a glance

Top emergency plumbers in Dorchester at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1Mr. Rooter Plumbing of London ON914.8★ (2,083)London, 18 km away24/7
2Reliance London Heating, Air Conditioning & Plumbing904.8★ (12,217)London, 10 km away24/7
3Freeman Mechanical894.9★ (358)Ingersoll, 16 km away24/7
4Steve Young Plumbing & Heating Ltd894.8★ (83)Dorchester24/7
5Nas Plumbing Inc.895.0★ (89)Kitchener, 7 km away24/7
6London Plumbing884.8★ (332)London, 16 km away24/7
7Elgin County Plumbing885.0★ (301)St. Thomas, 23 km away24/7
8DrainTech Plumbing London884.9★ (56)London, 7 km away24/7
9Whittaker Water Plumbing875.0★ (67)Norfolk County, 11 km away24/7
10Jumbo Plumbing874.9★ (318)London, 25 km away24/7

Call an emergency plumber in Dorchester now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency plumbers in Dorchester, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 132 is on the plumbers page.

Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  6. #6 London Plumbing

    Based in London, 16 km away

    88/100CR Score

    Ranked #6 because of its Google rating and availability: 4.8★ from 332 Google reviews, open 24/7.

    • 4.8★ from 332 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    79 Stanley St, London, ON N6C 1B3
    View profile for London Plumbing(226) 270-0405

  10. #10 Jumbo Plumbing

    Based in London, 25 km away

    87/100CR Score

    Ranked #10 because of its Google rating and availability: 4.9★ from 318 Google reviews, open 24/7.

    • 4.9★ from 318 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    36 St Catharine St unit 3, St Thomas, ON N5P 2V8
    View profile for Jumbo Plumbing(226) 667-3511

  15. #15 Jumbo Plumbing

    Based in London, 14 km away

    86/100CR Score

    Ranked #15 because of its Google rating and availability: 5.0★ from 35 Google reviews, open 24/7.

    • 5.0★ from 35 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    510 William St unit 3, London, ON N6B 3E6
    View profile for Jumbo Plumbing(519) 805-2623

  18. #18 Sobek Plumbing

    Based in London, 11 km away

    85/100CR Score

    Ranked #18 because of its Google rating and availability: 4.6★ from 34 Google reviews, open 24/7.

    • 4.6★ from 34 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1155 Commissioners Rd E, London, ON N5Z 4X9
    View profile for Sobek Plumbing(519) 808-1398

  19. #19 A.D Plumbing

    Based in Ingersoll, 16 km away

    85/100CR Score

    Ranked #19 because of its Google rating and availability: 5.0★ from 28 Google reviews, open 24/7.

    • 5.0★ from 28 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    167 Frances St, Ingersoll, ON N5C 2H6
    View profile for A.D Plumbing(226) 678-3140

Top 50 of 132 plumbers by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

plumbers in Dorchester, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26J Thompson Plumbing845.0★ (28)15 km
27Superior Plumbing & Heating of St. Thomas844.6★ (73)25 km
28Nova Drain & Plumbing Services London845.0★ (8)14 km
29Superior Plumbing & Heating of Woodstock834.8★ (49)28 km
30Mr. Rooter Plumbing of Woodstock ON834.5★ (205)33 km
31D. Andersen Plumbing835.0★ (82)4 km
32M & K Heating and Air Conditioning834.6★ (1,614)13 km
33Roy Inch & Sons Home Services by Enercare834.7★ (1,490)16 km
34Superior Plumbing & Heating of Aylmer834.8★ (22)24 km
35Cornell and Sons Plumbing835.0★ (54)36 km
36Superior Plumbing & Heating of London834.6★ (250)15 km
37PlumbingFX835.0★ (3)10 km
38Iron Horse Plumbing834.4★ (27)23 km
39D & S Plumbing824.1★ (36)23 km
40Practical Plumbing Co Ltd824.2★ (16)22 km
41Orzech Heating and Cooling824.8★ (272)12 km
42B.R.'s Plumbing and Heating824.8★ (236)29 km
43Mels Plumbing Inc814.9★ (23)28 km
44George's Plumbing and Heating814.5★ (55)15 km
45Strong plumbing and heating805.0★ (4)15 km
46Superior Plumbing & Heating of Ingersoll804.5★ (19)16 km
47Hurn Plumbing and Heating794.9★ (23)23 km
48H+S Plumbing Inc.785.0★ (3)38 km
49PMD Excavation Construction785.0★ (46)24 km
50Pope Plumbing (R W Pope & Sons Ltd)784.9★ (36)18 km

How we ranked emergency plumbers in Dorchester

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 plumbers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

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 from
Reputation25%Bayesian-adjusted Google star rating
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2
Review volume10%log10(reviews + 1) against the list maximum
Recency10%Share of reviews from the last 12 months
Availability20%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radius
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)

Emergency plumbers in Dorchester: questions

Which plumbers in Dorchester are open 24/7?

24 on this list post 24/7 hours, including Mr. Rooter Plumbing of London ON, Reliance London Heating, Air Conditioning & Plumbing, Freeman Mechanical, Steve Young Plumbing & Heating Ltd and Nas Plumbing Inc..

Who is ranked #1 for emergency plumbing in Dorchester, ON?

Mr. Rooter Plumbing of London ON is #1, with a CR Score of 91 out of 100 on emergency weights.

How are emergency plumbers in Dorchester ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 25% and 20%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 plumbers are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the plumber arrives?

Burst pipe or major leak: shut off the main water valve first. If water reaches outlets or the panel, stay clear and call 911.

How many emergency plumbers here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Dorchester

  1. October 2026: CR Scores recalculated for 132 plumbers serving Dorchester.

More emergency and plumbing pages