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ContractorsRanked

Best Plumbers in Covina, CA (2026)

1,232 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Covina: Top Notch Plumbing Inc., CR Score 93/100; 5.0★ from 515 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Rooter Hero Plumbing & Air, posts 24/7 hours; ranked #2 of 1,232.

  3. 8

    Most-reviewed: Barker and Sons Plumbing & Rooter, 3,896 Google reviews at 4.8★, the most of 1,232 ranked; ranked #8.

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

1,232 Covina plumbers are ranked here by CR Score, from 8 published factors. 639 are open 24/7, 1,009 open Saturdays and 803 open Sundays, based on posted hours. The median Google rating is 4.9★ across 1,232 rated businesses.

Top 10 plumbers in Covina at a glance

Top 10 plumbers in Covina at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Top Notch Plumbing Inc.935.0★ (515)Covina24/7Overall
2Rooter Hero Plumbing & Air924.9★ (1,637)Pomona, 9 mi away24/7Emergencies
3Western Rooter & Plumbing924.9★ (1,562)Arcadia, 9 mi away24/7—
4Rooter Hero Plumbing & Air of San Gabriel Valley914.9★ (926)Diamond Bar, 7 mi away24/7—
5Monkey Wrench Plumbing, Heating, Air & Electric914.9★ (253)Covina24/7—
6Drainflow Solutions & Plumbing915.0★ (276)Duarte, 6 mi away24/7—
724 Rooter & Plumbing, Inc.905.0★ (346)Claremont, 9 mi away24/7—
8Barker and Sons Plumbing & Rooter904.8★ (3,896)Anaheim, 16 mi away24/7Most reviews
9Good News Plumbing & Drain904.9★ (237)Glendora, 4 mi away24/7—
10Merry Plumbing905.0★ (652)San Marino, 13 mi away24/7—

The 1,232 best plumbers in Covina, ranked

Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.

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

  10. #10 Merry Plumbing

    Based in San Marino, 13 mi away

    90/100CR Score

    Ranked #10 because of its Google rating and availability: 5.0★ from 652 Google reviews, open 24/7.

    • 5.0★ from 652 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1465 San Marino Ave, San Marino, CA 91108
    View profile for Merry Plumbing(626) 414-5583

  13. #13 JB Plumbing

    Based in San Dimas, 5 mi away

    90/100CR Score

    Ranked #13 because of its Google rating and availability: 4.8★ from 396 Google reviews, open 24/7.

    • 4.8★ from 396 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    515 W Allen Ave #13, San Dimas, CA 91773
    View profile for JB Plumbing(909) 592-8487

  19. #19 Option One Plumbing

    Based in Rancho Cucamonga, 18 mi away

    89/100CR Score

    Ranked #19 because of its Google rating and availability: 4.8★ from 3,017 Google reviews, open 24/7.

    • 4.8★ from 3,017 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    10722 Arrow Route STE 602, Rancho Cucamonga, CA 91730
    View profile for Option One Plumbing(800) 905-7115

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 1,232 ranked plumbers here; the rest are on their profiles.

plumbers in Covina, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26I Love Sewers Rooter And Plumbing Sewer Specialties Inc894.9★ (200)8 mi
27Nolasco Plumbing, Inc.895.0★ (89)6 mi
28The Rooter Company894.9★ (350)12 mi
29Do It Right Plumbers894.8★ (1,980)18 mi
30High Speed Rooter & Plumbing894.8★ (362)9 mi
31Roto-Rooter Plumbing & Water Cleanup894.8★ (1,128)15 mi
32Service Lion Plumbing Heating Air Electric894.7★ (1,173)12 mi
33Drain Great Plumbing Services895.0★ (94)7 mi
34High Speed Plumbing of Arcadia894.9★ (182)8 mi
35Smart Choice Rooter895.0★ (68)5 mi
36CA ROOTER AND PLUMBING884.8★ (73)2 mi
37Alpine Plumbing, Heating, and Air884.9★ (743)4 mi
38Graham Plumbing and Drain Cleaning, Inc.884.9★ (287)12 mi
39Orange Coast Plumbing885.0★ (435)17 mi
40Monkey Wrench Plumbing, Heating, Air & Electric885.0★ (160)12 mi
41SOS Plumbing885.0★ (33)1 mi
42Bow Tie Plumbing & Rooter885.0★ (334)17 mi
43Mr. Rooter Plumbing of Pomona Valley884.9★ (131)8 mi
44Holmer Plumbing & Drain, Inc885.0★ (173)13 mi
45Mr. Rooter Plumbing of Long Beach884.9★ (1,140)21 mi
46Mr. Rooter Plumbing of Orange County884.9★ (560)17 mi
47Roto-Rooter Plumbing & Water Cleanup884.9★ (436)15 mi
48BigTime Plumber Service885.0★ (54)6 mi
49Drainiacs Plumbing - Covina885.0★ (24)In Covina
50Iron Mountain Plumbing885.0★ (310)17 mi

Also serving Covina

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.

Unranked plumbers serving Covina
BusinessGoogle ratingDistance
Absolute PlumbingIn Covina
AK Plumbing5.0★ (70)6 mi
All Rooter Solutions5.0★ (2)5 mi
Count-on Plumbing5.0★ (2)3 mi
Courtesy Plumbing4.8★ (387)In Covina
Currier Plumbing5.0★ (2)10 mi
ENCO ENGINEERING Inc.In Covina
Hd Production Plumbing Contrac5.0★ (1)In Covina
Hydro Backflow5.0★ (2)1 mi
JB Plumbing4.5★ (2)9 mi
Jerez Plumbing | Emergency Plumber, Hydrojetting, Drain Cleaning, and Tankless Water Heater Repair in La Puente, CA5.0★ (92)7 mi
JLG Builders5.0★ (1)In Covina
North Brothers Plumbing5.0★ (130)2 mi
Orange Coast Pipe5.0★ (2)10 mi
Pellyo ServicesIn Covina
Plumber XP5.0★ (258)12 mi
Reliance PlumbingIn Covina
Tankless Water heater Repair & Plumbing5.0★ (2)9 mi
Tommy's Rooter ServiceIn Covina
Tony's Rooter and Plumbing Service4.9★ (54)3 mi

How much do plumbers cost in Covina?

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

How much do plumbers cost in Covina?
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 California

In California, Contractors State License Board (CSLB) licenses C-36 Plumbing contractor license.

Jobs of $1,000 or more in labor and materials (from January 1, 2025).

  1. Search the business name or license number on the Contractors State License Board (CSLB) license lookup.
  2. Check that the status is active and the name matches the contract or truck.
  3. 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 Covina plumbers

We scored 1,232 Covina plumbers on 8 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. Unknown factors are left out of the score, 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 Covina data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Plumbers in Covina: frequently asked questions

Who is the best plumber in Covina?

By CR Score, the highest-ranked plumber in Covina, CA is Top Notch Plumbing Inc. with a CR Score of 93/100. It has 5.0★ from 515 Google reviews. It is open 24/7. Rooter Hero Plumbing & Air (#2) and Western Rooter & Plumbing (#3) follow. We ranked 1,232 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in Covina?

ContractorsRanked ranks 1,232 plumbers serving Covina, CA. 4 of them are based in Covina; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which plumbers in Covina are open 24/7?

639 ranked plumbers in Covina post 24/7 hours. The highest-ranked are Top Notch Plumbing Inc. (#1), Rooter Hero Plumbing & Air (#2) and Western Rooter & Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Covina work on weekends?

1,009 of 1,232 ranked plumbers post Saturday hours and 803 post Sunday hours. The highest-ranked open Saturdays are Top Notch Plumbing Inc. (#1), Rooter Hero Plumbing & Air (#2) and Western Rooter & Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.

How do I check a plumber's license in California?

In California, Contractors State License Board (CSLB) handles licensing and covers C-36 Plumbing contractor license. Search the business or license number at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx. Jobs of $1,000 or more in labor and materials (from January 1, 2025).

How much does water heater replacement cost in Covina?

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

What Google rating do Covina plumbers have?

The median Google rating among 1,232 rated plumbers in Covina is 4.9★, with a median of 21 reviews. Barker and Sons Plumbing & Rooter has the most, 3,896 reviews, and ranks #8. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Update log for Covina

  1. October 2026: CR Scores recalculated for 1,232 plumbers serving Covina.
  2. October 2026: 12 duplicate listings merged.

More plumbers and Covina pages

Other trades in Covina