16 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Hermiston: Westfall Septic, CR Score 94/100; 4.8★ from 49 Google reviews; open 24/7.
Best for emergencies (open 24/7): Frank's Sewer Services, posts 24/7 hours; ranked #3 of 16.
Most-reviewed: Round-Up City Plumbing LLC, 94 Google reviews at 4.8★, the most of 16 ranked; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
16 Hermiston plumbers are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 6 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.5★ across 16 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Westfall Septic | 94 | 4.8★ (49) | Hermiston | 24/7 | Overall |
| 2 | Andrews Sewer & Drain Service, LLP | 88 | 4.8★ (31) | Hermiston | Sat · Sun | — |
| 3 | Frank's Sewer Services | 87 | 4.1★ (11) | Hermiston | 24/7 | Emergencies |
| 4 | Round-Up City Plumbing LLC | 86 | 4.8★ (94) | Pendleton, 24 mi away | — | Most reviews |
| 5 | Inland Plumbing | 85 | 4.2★ (24) | Hermiston | — | — |
| 6 | Springhill Plumbing & HVAC | 84 | 4.2★ (10) | Hermiston | Sat · Sun · Evenings | — |
| 7 | Pnw Irrigation and Excavation, LLC | 82 | 5.0★ (21) | Richland, 13 mi away | Sat · Evenings | — |
| 8 | Columbia Basin Drain | 81 | 4.0★ (3) | Hermiston | — | — |
| 9 | Rob Merriman Plumbing & Heating | 80 | 4.5★ (34) | Pendleton, 25 mi away | — | — |
| 10 | Hellman Plumbing | 77 | 4.5★ (8) | Hermiston | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and availability: 4.8★ from 49 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hermiston
Ranked #2 because of its Google rating and trade focus: 4.8★ from 31 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hermiston
Ranked #3 because of its Google rating and availability: 4.1★ from 11 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Pendleton, 24 mi away
Ranked #4 because of its Google rating and review volume: 4.8★ from 94 Google reviews, the most Google reviews on this list (94).
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Hermiston
Ranked #5 because of its Google rating and trade focus: 4.2★ from 24 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Hermiston
Ranked #6 because of its Google rating and trade focus: 4.2★ from 10 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Richland, 13 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hermiston
Ranked #8 because of its Google rating and trade focus: 4.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Pendleton, 25 mi away
Ranked #9 because of its Google rating and trade focus: 4.5★ from 34 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Hermiston
Ranked #10 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Hermiston
Ranked #11 because of its Google rating and trade focus: 4.1★ from 14 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kennewick, 24 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Kennewick, 24 mi away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kennewick, 25 mi away
Ranked #14 because of its Google rating and trade focus: 4.6★ from 11 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kennewick, 25 mi away
Ranked #15 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kennewick, 25 mi away
Ranked #16 because of its Google rating and review volume: 4.5★ from 14 Google reviews, 14 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
8 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 |
|---|---|---|
| ACES Heating & Cooling | 5.0★ (344) | In Hermiston |
| Bruce Heating & Air Conditioning, Inc. | 4.8★ (291) | In Hermiston |
| C & M Plumbing Inc | 23 mi | |
| Doug's Septic Services | 5.0★ (1) | 6 mi |
| Handy Helpers LLC | 4.7★ (12) | In Hermiston |
| Mechanix Inc | In Hermiston | |
| Perfection Plumbing and Mechanical | 18 mi | |
| Performance Electric Service LLC | 5.0★ (2) | 25 mi |
National price ranges in USD, not adjusted for Hermiston. 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 |
In Oregon, Oregon Construction Contractors Board licenses Construction contractor license plus a plumbing contractor license from the Building Codes Division.
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
We scored 16 Hermiston 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 Hermiston 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 |