91/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 923 Google reviews, open 24/7.
- 4.9★ from 923 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1025 N Dutton Ave, Santa Rosa, CA 95401
Best Plumbers in Saint Helena, CA (2026)
177 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Saint Helena: Mr. Rooter Plumbing of Sonoma County, CR Score 91/100; 4.9★ from 923 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Redwood Sewer & Drain Services, posts 24/7 hours; ranked #2 of 177.
- 12
Most-reviewed: Ongaro & Sons, 1,222 Google reviews at 4.9★, the most of 177 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
177 Saint Helena plumbers are ranked here by CR Score, from 8 published factors. 42 are open 24/7, 96 open Saturdays and 65 open Sundays, based on posted hours. The median Google rating is 5.0★ across 177 rated businesses.
Top 10 plumbers in Saint Helena at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mr. Rooter Plumbing of Sonoma County | 91 | 4.9★ (923) | Santa Rosa, 15 mi away | 24/7 | Overall |
| 2 | Redwood Sewer & Drain Services | 89 | 5.0★ (163) | Larkfield-Wikiup, 15 mi away | 24/7 | Emergencies |
| 3 | Roto-Rooter Plumbing & Water Cleanup | 87 | 4.7★ (393) | Cotati, 18 mi away | 24/7 | — |
| 4 | United States Plumbing | 87 | 5.0★ (66) | Santa Rosa, 14 mi away | 24/7 | — |
| 5 | KC Home Services Plumbing, Heating & AC Repair | 87 | 4.9★ (827) | Santa Rosa, 15 mi away | 24/7 | — |
| 6 | West Coast Plumbing | 87 | 4.9★ (90) | Santa Rosa, 15 mi away | 24/7 | — |
| 7 | Elite Plumbing Services | 87 | 4.9★ (123) | Cotati, 18 mi away | 24/7 | — |
| 8 | Rooter Man Sonoma County | 87 | 4.9★ (570) | Santa Rosa, 16 mi away | Sat · Sun | — |
| 9 | Roto-Rooter Plumbing & Water Cleanup | 86 | 5.0★ (38) | Santa Rosa, 14 mi away | 24/7 | — |
| 10 | Rooter Hero Plumbing & Air of Santa Rosa | 86 | 4.9★ (401) | Rohnert Park, 17 mi away | Sat · Sun · Evenings | — |
The 177 best plumbers in Saint Helena, 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.
Based in Larkfield-Wikiup, 15 mi away
89/100CR ScoreRanked #2 because of its Google rating and availability: 5.0★ from 163 Google reviews, open 24/7.
- 5.0★ from 163 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Cotati, 18 mi away
87/100CR ScoreRanked #3 because of its Google rating and availability: 4.7★ from 393 Google reviews, open 24/7.
- 4.7★ from 393 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 595 Portal St B, Cotati, CA 94931
Based in Santa Rosa, 14 mi away
87/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 66 Google reviews, open 24/7.
- 5.0★ from 66 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 445 S E St #12, Santa Rosa, CA 95404
Based in Santa Rosa, 15 mi away
87/100CR ScoreRanked #5 because of its Google rating and availability: 4.9★ from 827 Google reviews, open 24/7.
- 4.9★ from 827 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 328 Yolanda Ave, Santa Rosa, CA 95404
Based in Santa Rosa, 15 mi away
87/100CR ScoreRanked #6 because of its Google rating and availability: 4.9★ from 90 Google reviews, open 24/7.
- 4.9★ from 90 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 374 Yolanda Ave Suite D, Santa Rosa, CA 95404
Based in Cotati, 18 mi away
87/100CR ScoreRanked #7 because of its Google rating and availability: 4.9★ from 123 Google reviews, open 24/7.
- 4.9★ from 123 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 200 Valparaiso Ave, Cotati, CA 94931
Based in Santa Rosa, 16 mi away
87/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 570 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 570 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 789 Lombardi Ct Suite 208, Santa Rosa, CA 95407
Based in Santa Rosa, 14 mi away
86/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 38 Google reviews, open 24/7.
- 5.0★ from 38 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3402 Mendocino Ave, Santa Rosa, CA 95403
Based in Rohnert Park, 17 mi away
86/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 401 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 401 Google reviews
- Hours
- Mon–Sun 8 AM–9 PM
- Address
- 5772 Commerce Blvd, Rohnert Park, CA 94928
Based in Windsor, 18 mi away
86/100CR ScoreRanked #11 because of its Google rating and availability: 4.9★ from 531 Google reviews, open 24/7.
- 4.9★ from 531 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 200 American Way, Windsor, CA 95492
#12 Ongaro & Sons
Based in Santa Rosa, 14 mi away
85/100CR ScoreRanked #12 because of its Google rating and availability: 4.9★ from 1,222 Google reviews, open 24/7.
- 4.9★ from 1,222 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 250 D St Suite 700B, Santa Rosa, CA 95404
Based in Santa Rosa, 14 mi away
85/100CR ScoreRanked #13 because of its Google rating and availability: 4.9★ from 23 Google reviews, open 24/7.
- 4.9★ from 23 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 720 2nd St #5511, Santa Rosa, CA 95402
Based in Boyes Hot Springs, 14 mi away
85/100CR ScoreRanked #14 because of its Google rating and availability: 4.6★ from 55 Google reviews, open 24/7.
- 4.6★ from 55 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Santa Rosa, 15 mi away
84/100CR ScoreRanked #15 because of its Google rating and availability: 5.0★ from 18 Google reviews, open 24/7.
- 5.0★ from 18 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1007 W College Ave #143, Santa Rosa, CA 95401
#16 Staches Plumbing
Based in Fairfield, 21 mi away
84/100CR ScoreRanked #16 because of its Google rating and availability: 4.9★ from 42 Google reviews, open 24/7.
- 4.9★ from 42 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Santa Rosa, 15 mi away
84/100CR ScoreRanked #17 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 24/7.
- 5.0★ from 13 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1007 W College Ave #135, Santa Rosa, CA 95401
#18 Shields Plumbing
Based in Fairfield, 25 mi away
84/100CR ScoreRanked #18 because of its Google rating and availability: 5.0★ from 51 Google reviews, open 24/7.
- 5.0★ from 51 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Santa Rosa, 15 mi away
84/100CR ScoreRanked #19 because of its Google rating and availability: 5.0★ from 23 Google reviews, open 24/7.
- 5.0★ from 23 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5989 Petaluma Hill Rd, Santa Rosa, CA 95404
Based in Saint Helena
84/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 10 Google reviews, listed on Google as “Plumber”.
- 4.9★ from 10 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
- Address
- 1141 Main St, St Helena, CA 94574
Based in Santa Rosa, 15 mi away
83/100CR ScoreRanked #21 because of its Google rating and availability: 4.9★ from 486 Google reviews, open 24/7.
- 4.9★ from 486 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 3345 Industrial Dr STE 16, Santa Rosa, CA 95403
Based in Santa Rosa, 15 mi away
83/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 22 Google reviews, open 24/7.
- 5.0★ from 22 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1047 Russell Ave, Santa Rosa, CA 95403
Based in Santa Rosa, 20 mi away
83/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 103 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 103 Google reviews
- Hours
- Mon–Fri 7:30 AM–7 PM · Sat 8:30 AM–5 PM · Sun 9:30 AM–3 PM
Based in Larkfield-Wikiup, 19 mi away
83/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 84 Google reviews, listed on Google as “Plumber”.
- 5.0★ from 84 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 9 AM–5 PM
Based in Napa, 20 mi away
83/100CR ScoreRanked #25 because of its Google rating and availability: 4.6★ from 49 Google reviews, open 24/7.
- 4.6★ from 49 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 901A Enterprise Way, Napa, CA 94558
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 177 ranked plumbers here; the rest are on their profiles.
Also serving Saint Helena
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 |
|---|---|---|
| Advanced Pipe & Leak Detection | 5.0★ (2) | 21 mi |
| All Star Plumbing - Napa | 5.0★ (1) | 17 mi |
| Bam Plumbing Inc. | 3.0★ (2) | 14 mi |
| Benjamin Franklin Plumbing | 1.0★ (1) | 15 mi |
| CBS Plumbing & Heating | 5.0★ (2) | 16 mi |
| Charlie's Plumbing Inc | 4.3★ (6) | 17 mi |
| Desired Plumbing, Inc. | 5.0★ (2) | 19 mi |
| Hayes Construction | 1.0★ (1) | 12 mi |
| Healdsburg Plumbing | 5.0★ (14) | 24 mi |
| Henry Mechanical | 5.0★ (866) | 18 mi |
| Herrera Plumbing LLC | 5.0★ (5) | 19 mi |
| Imboden Pumps | 5.0★ (1) | 16 mi |
| Jeff Schefer's Plumbing Services | 5.0★ (3) | 12 mi |
| Mod Plumbing | 5.0★ (1) | 17 mi |
| Regina Plumbing | 5.0★ (2) | 23 mi |
| Rich your Local Handyman Services | 5.0★ (4) | 15 mi |
| S S Construction | 5.0★ (5) | 12 mi |
| Schefer Radiant Hydronic Heat and Plumbing | 4.2★ (5) | 15 mi |
| Scott Cramer Plumbing | 5.0★ (2) | 19 mi |
| Todd Norris Plumbing & Heating | 5.0★ (2) | 22 mi |
How much do plumbers cost in Saint Helena?
National price ranges in USD, not adjusted for Saint Helena. 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 Saint Helena plumbers
We scored 177 Saint Helena 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.
| Factor | Weight | Computed from | In Saint Helena data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Plumbers in Saint Helena: frequently asked questions
Who is the best plumber in Saint Helena?
By CR Score, the highest-ranked plumber in Saint Helena, CA is Mr. Rooter Plumbing of Sonoma County with a CR Score of 91/100. It has 4.9★ from 923 Google reviews. It is open 24/7. Redwood Sewer & Drain Services (#2) and Roto-Rooter Plumbing & Water Cleanup (#3) follow. We ranked 177 plumbers on 8 factors, last updated October 22, 2026.
How many plumbers are there in Saint Helena?
ContractorsRanked ranks 177 plumbers serving Saint Helena, CA. 1 of them is based in Saint Helena; 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 Saint Helena are open 24/7?
42 ranked plumbers in Saint Helena post 24/7 hours. The highest-ranked are Mr. Rooter Plumbing of Sonoma County (#1), Redwood Sewer & Drain Services (#2) and Roto-Rooter Plumbing & Water Cleanup (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which plumbers in Saint Helena work on weekends?
96 of 177 ranked plumbers post Saturday hours and 65 post Sunday hours. The highest-ranked open Saturdays are Mr. Rooter Plumbing of Sonoma County (#1), Redwood Sewer & Drain Services (#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 Saint Helena?
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 Saint Helena. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Saint Helena plumbers have?
The median Google rating among 177 rated plumbers in Saint Helena is 5.0★, with a median of 14 reviews. Ongaro & Sons has the most, 1,222 reviews, and ranks #12. 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 Saint Helena
- October 2026: CR Scores recalculated for 177 plumbers serving Saint Helena.
More plumbers and Saint Helena pages
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