63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,464 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,464 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Plumbers in Discovery Bay, CA (2026)
316 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Discovery Bay: In Demand Plumbing, CR Score 63/100; 4.9★ from 1,464 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Roto-Rooter Plumbing & Water Cleanup, posts 24/7 hours; ranked #3 of 316.
- 44
Most-reviewed: Service Champions, 4,721 Google reviews at 4.9★, the most of 316 ranked; ranked #44.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
316 Discovery Bay plumbers are ranked here by CR Score, from ten published factors. 114 are open 24/7, 225 open Saturdays and 157 open Sundays, based on posted hours. The median Google rating is 4.9★ across 316 rated businesses.
Top 10 plumbers in Discovery Bay at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | In Demand Plumbing | 63 | 4.9★ (1,464) | Antioch, 15 mi away | 24/7 | Overall |
| 2 | Flow Pro Plumbing | 63 | 4.9★ (879) | Brentwood, 6 mi away | Sat · Sun | — |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 63 | 4.9★ (293) | Brentwood, 6 mi away | 24/7 | Emergencies |
| 4 | Rooter Hero Plumbing & Air | 62 | 4.8★ (1,291) | Antioch, 13 mi away | 24/7 | — |
| 5 | Roto-Rooter Plumbing & Water Cleanup | 62 | 4.9★ (1,175) | Tracy, 15 mi away | 24/7 | — |
| 6 | Roto-Rooter Plumbing & Water Cleanup | 62 | 4.8★ (1,594) | Livermore, 16 mi away | 24/7 | — |
| 7 | Oasis Plumber's Byron | 61 | 5.0★ (41) | Discovery Bay | 24/7 | — |
| 8 | Plumbing Care Inc | 61 | 4.9★ (1,948) | San Ramon, 23 mi away | 24/7 | — |
| 9 | R.B. Travis | 61 | 4.8★ (824) | Livermore, 16 mi away | 24/7 | — |
| 10 | Discount Plumbing | 61 | 4.8★ (979) | Stockton, 18 mi away | 24/7 | — |
The 316 best plumbers in Discovery Bay, 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.
Based in Brentwood, 6 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 879 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 879 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 10 AM–6 PM · Sun 8 AM–6 PM
- Address
- 103 Technology Ct Suite H, Brentwood, CA 94513
Based in Brentwood, 6 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 293 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 293 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1210 Central Blvd Ste 123, Brentwood, CA 94513
Based in Antioch, 13 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 1,291 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 1,291 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2205 A St, Antioch, CA 94509
Based in Tracy, 15 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 1,175 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,175 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 95 W 11th St #204A, Tracy, CA 95376
Based in Livermore, 16 mi away
62/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 1,594 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 1,594 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5717 Brisa St, Livermore, CA 94550
Based in Discovery Bay
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 41 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3501 Byer Rd, Byron, CA 94514
Based in San Ramon, 23 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 1,948 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 1,948 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2415 San Ramon Valley Blvd UNIT 312, San Ramon, CA 94583
#9 R.B. Travis
Based in Livermore, 16 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 824 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 824 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4935 Southfront Rd A, Livermore, CA 94551
Based in Stockton, 18 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 979 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 979 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 202 Val Dervin Pkwy, Stockton, CA 95206
Based in Antioch, 13 mi away
61/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 427 Google reviews, listed on Google as “Plumber”.
- 4.8★ from 427 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 126 Railroad Ave, Antioch, CA 94509
Based in Stockton, 16 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 357 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 357 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3504 Grange Ave, Stockton, CA 95204
Based in Manteca, 22 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 1,664 Google reviews, listed on Google as “Plumber”.
- 4.7★ from 1,664 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 164 S Grant Ave, Manteca, CA 95336
Based in Brentwood, 7 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1051 Meadow Brook Dr, Brentwood, CA 94513
Based in Brentwood, 6 mi away
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 280 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 280 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 2010 Elkins Way ste 112-6, Brentwood, CA 94513
Based in Manteca, 16 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 588 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 588 Google reviews
- Hours
- Mon–Fri 7 AM–6:30 PM · Sat 7:30 AM–6 PM · Sun 8:30 AM–6 PM
Based in Dublin, 22 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 453 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 453 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6575 Trinity Ct E, Dublin, CA 94568
Based in Concord, 25 mi away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 514 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 514 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2170 Commerce Ave Unit M, Concord, CA 94520
Based in Country Club, 18 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 737 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 737 Google reviews
- Hours
- Mon–Fri 7 AM–6:30 PM · Sat 7:30 AM–6 PM · Sun 8:30 AM–6 PM
Based in Concord, 25 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 499 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 499 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1320 Willow Pass Rd, Concord, CA 94520
Based in Stockton, 17 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 443 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 443 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 8 AM–5 PM
- Address
- 7811 Amber Way, Stockton, CA 95207
Based in Pleasanton, 22 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 248 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 248 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1048 Serpentine Ln # 312, Pleasanton, CA 94566
Based in San Ramon, 22 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 339 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 339 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 6101 Bollinger Canyon Rd Ste 323, San Ramon, CA 94583
Based in Antioch, 11 mi away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 330 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 330 Google reviews
- Hours
- Mon–Thu 6 AM–10 PM · Fri 6 AM–5 PM · Sat closed · Sun 2 PM–6 PM
- Address
- 1309 Mokelumne Dr, Antioch, CA 94531
Based in Danville, 19 mi away
59/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 183 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 183 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 600 Joya Ct, Danville, CA 94506
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 316 ranked plumbers here; the rest are on their profiles.
Also serving Discovery Bay
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 |
|---|---|---|
| A+ Plumbing | 1.0★ (1) | In Discovery Bay |
| Accomplish Water Heater Service | 5.0★ (33) | 19 mi |
| American Plumbing | 3.9★ (60) | 14 mi |
| Ave Maria Plumbing | 5.0★ (82) | 21 mi |
| Barker Heating & Cooling | 4.8★ (1,930) | 15 mi |
| Emergency Plumbers | In Discovery Bay | |
| Emergency Plumbers 911 Lodi | 3.0★ (2) | 21 mi |
| Essential Engineering Plumbing & Rooter | 5.0★ (2) | 19 mi |
| J&M Contra Costa Rooter and Plumbing | 4.8★ (101) | 22 mi |
| Mike's 24 hr Plumbing & Drain Cleaning and hydro jetting | 5.0★ (21) | 17 mi |
| Pittsburg Pipe & Plumbing | 5.0★ (30) | 18 mi |
| Plumbing Services A + | 4.9★ (73) | 23 mi |
| Prime Time Plumbing | 5.0★ (50) | 22 mi |
| Roto-Rooter Plumbing & Water Cleanup | 4.5★ (111) | 20 mi |
| RUFF PLUMBING | 5.0★ (2) | 18 mi |
| Stanton Plumbing | 5.0★ (2) | 18 mi |
| The Righteous Drain Cleaners and Plumbing Co. | 5.0★ (2) | 17 mi |
| Voda Plumbing Inc | 3.0★ (2) | 21 mi |
| water heaters 4 less | 5.0★ (4) | 5 mi |
| White Water Plumbing | 3.0★ (2) | 14 mi |
How much do plumbers cost in Discovery Bay?
National price ranges in USD, not adjusted for Discovery Bay. 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 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).
- Search the business name or license number on the Contractors State License Board (CSLB) 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 Discovery Bay plumbers
We scored 316 Discovery Bay 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.
| Factor | Weight | Computed from | In Discovery Bay 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 Discovery Bay: frequently asked questions
Who is the best plumber in Discovery Bay?
By CR Score, the highest-ranked plumber in Discovery Bay, CA is In Demand Plumbing with a CR Score of 63/100. It has 4.9★ from 1,464 Google reviews. It is open 24/7. Flow Pro Plumbing (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 316 plumbers on ten factors, last updated October 22, 2026.
How many plumbers are there in Discovery Bay?
ContractorsRanked ranks 316 plumbers serving Discovery Bay, CA. 2 of them are based in Discovery Bay; 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 Discovery Bay are open 24/7?
114 ranked plumbers in Discovery Bay post 24/7 hours. The highest-ranked are In Demand Plumbing (#1), Roto-Rooter Plumbing & Water Cleanup (#3) and Rooter Hero Plumbing & Air (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Discovery Bay work on weekends?
225 of 316 ranked plumbers post Saturday hours and 157 post Sunday hours. The highest-ranked open Saturdays are In Demand Plumbing (#1), Flow Pro Plumbing (#2) and Roto-Rooter Plumbing & Water Cleanup (#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 Discovery Bay?
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 Discovery Bay. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Discovery Bay plumbers have?
The median Google rating among 316 rated plumbers in Discovery Bay is 4.9★, with a median of 23 reviews. Service Champions has the most, 4,721 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 Discovery Bay
- October 2026: CR Scores recalculated for 316 plumbers serving Discovery Bay.
- October 2026: 4 duplicate listings merged.
More plumbers and Discovery Bay pages
Plumbers near Discovery Bay
- Plumbers in Brentwood, CA319 ranked
- Plumbers in Oakley, CA311 ranked
- Plumbers in Mountain House, CA239 ranked
- Plumbers in Antioch, CA323 ranked
- Plumbers in Country Club, CA144 ranked
- Plumbers in Tracy, CA194 ranked
- Plumbers in Stockton, CA143 ranked
- Plumbers in Pittsburg, CA380 ranked
- Plumbers in Blackhawk, CA519 ranked
- Plumbers in Livermore, CA504 ranked
Other trades in Discovery Bay
- Roofers in Discovery Bay527 ranked
- Electricians in Discovery Bay229 ranked
- HVAC contractors in Discovery Bay301 ranked
- General contractors in Discovery Bay303 ranked
- Painters in Discovery Bay37 ranked
- Landscapers in Discovery Bay54 ranked
- Handymen in Discovery Bay29 ranked
- Kitchen remodelers in Discovery Bay177 ranked
- Bathroom remodelers in Discovery Bay169 ranked
- Flooring contractors in Discovery Bay136 ranked
- Tile installers in Discovery Bay18 ranked
- Drywall contractors in Discovery Bay7 ranked
- Concrete contractors in Discovery Bay137 ranked
- Fence contractors in Discovery Bay82 ranked
- Deck builders in Discovery Bay59 ranked
- Siding contractors in Discovery Bay67 ranked
- Window installers in Discovery Bay238 ranked
- Gutter installers in Discovery Bay88 ranked
- Insulation contractors in Discovery Bay38 ranked
- Solar installers in Discovery Bay248 ranked
- Garage door repair companies in Discovery Bay107 ranked
- Foundation repair companies in Discovery Bay72 ranked
- Tree services in Discovery Bay132 ranked
- Masonry contractors in Discovery Bay60 ranked
- Water damage restoration companies in Discovery Bay232 ranked
- Home builders in Discovery Bay321 ranked
- Demolition contractors in Discovery Bay26 ranked
- All contractors in Discovery Bay