8 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Grandview: Precision Pump and Well Services, CR Score 89/100; 4.9★ from 118 Google reviews; open 24/7.
Best for emergencies (open 24/7): Shadow Mountain Septic and Plumbing LLC, posts 24/7 hours; ranked #2 of 8.
Most-reviewed: Coy's Plumbing, 29 Google reviews at 4.0★, the most of 8 ranked after Precision Pump and Well Services; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
8 Grandview plumbers are ranked here by CR Score, from 8 published factors. 2 are open 24/7, 4 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 4.7★ across 8 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Precision Pump and Well Services | 89 | 4.9★ (118) | Richland, 25 mi away | 24/7 | Overall |
| 2 | Shadow Mountain Septic and Plumbing LLC | 84 | 4.8★ (16) | West Richland, 20 mi away | 24/7 | Emergencies |
| 3 | Sunnymex Septic & Drain LLC | 82 | 4.1★ (16) | Prosser, 6 mi away | Sat · Sun · Evenings | — |
| 4 | Sunnymex Septic & Drain, LLC | 81 | 4.3★ (12) | Sunnyside, 7 mi away | Sat · Sun · Evenings | — |
| 5 | Sals Pump Services | 78 | 5.0★ (5) | Prosser, 9 mi away | — | — |
| 6 | Adrian's Pro Plumbing LLC | 77 | 4.8★ (8) | Richland, 17 mi away | — | — |
| 7 | Coy's Plumbing | 76 | 4.0★ (29) | Prosser, 6 mi away | — | Most reviews |
| 8 | Bos Refrigeration - Heating and Air Conditioning | 76 | 4.6★ (12) | Sunnyside, 5 mi away | — | — |
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 review volume: 4.9★ from 118 Google reviews, the most Google reviews on this list (118).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in West Richland, 20 mi away
Ranked #2 because of its Google rating and availability: 4.8★ from 16 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Prosser, 6 mi away
Ranked #3 because of its Google rating and trade focus: 4.1★ from 16 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sunnyside, 7 mi away
Ranked #4 because of its Google rating and trade focus: 4.3★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Prosser, 9 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Richland, 17 mi away
Ranked #6 because of its Google rating and trade focus: 4.8★ from 8 Google reviews, listed on Google as “Plumber”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Prosser, 6 mi away
Ranked #7 because of its Google rating and trade focus: 4.0★ from 29 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Sunnyside, 5 mi away
Ranked #8 because of its Google rating and trade focus: 4.6★ from 12 Google reviews, listed on Google as “Plumber”.
Based on 6 of 8 factors; credentials and recency not yet collected.
National price ranges in USD, not adjusted for Grandview. 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 Washington, Washington State Department of Labor & Industries licenses Contractor registration and plumber certificates.
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 8 Grandview 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 Grandview 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 |