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ContractorsRanked

Best Plumbers in Prosser, WA (2026)

27 plumbers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Prosser: Precision Pump and Well Services, CR Score 89/100; 4.9★ from 118 Google reviews; open 24/7.

  2. 3

    Best for emergencies (open 24/7): Shadow Mountain Septic and Plumbing LLC, posts 24/7 hours; ranked #3 of 27.

  3. 2

    Most-reviewed: Generations Trenchless and Plumbing, 172 Google reviews at 4.9★, the most of 27 ranked; ranked #2.

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

27 Prosser plumbers are ranked here by CR Score, from 8 published factors. 4 are open 24/7, 13 open Saturdays and 11 open Sundays, based on posted hours. The median Google rating is 4.8★ across 27 rated businesses.

Top 10 plumbers in Prosser at a glance

Top 10 plumbers in Prosser at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Precision Pump and Well Services894.9★ (118)Richland, 21 mi away24/7Overall
2Generations Trenchless and Plumbing874.9★ (172)West Richland, 20 mi awaySat · Sun · EveningsMost reviews
3Shadow Mountain Septic and Plumbing LLC854.8★ (16)West Richland, 15 mi away24/7Emergencies
4Sunnymex Septic & Drain LLC844.1★ (16)ProsserSat · Sun · Evenings—
5Stricker Maintenance And Draincleaning814.8★ (20)Richland, 24 mi away24/7—
6Sals Pump Services815.0★ (5)Prosser——
7Regal Plumbers805.0★ (18)Richland, 24 mi awaySat · Sun · Evenings—
8Viking Plumbing & Mechanical795.0★ (15)Selah, 23 mi awaySat · Sun—
9Sunnymex Septic & Drain, LLC794.3★ (12)Sunnyside, 13 mi awaySat · Sun · Evenings—
10Adrian's Pro Plumbing LLC784.8★ (8)Richland, 11 mi away——

The 27 best plumbers in Prosser, ranked

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

  6. #6 Sals Pump Services

    Based in Prosser

    81/100CR Score

    Ranked #6 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.

    • 5.0★ from 5 Google reviews
    Address
    107502 Old Inland Empire Hwy, Prosser, WA 99350
    View profile for Sals Pump Services(509) 830-1520

  7. #7 Regal Plumbers

    Based in Richland, 24 mi away

    80/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Plumber”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 18 Google reviews
    Hours
    Mon–Sun 5 AM–11 PM
    Address
    711 Jadwin Ave #2, Richland, WA 99352
    View profile for Regal Plumbers(509) 713-1705

  11. #11 Atomic Plumbing Services

    Based in West Richland, 20 mi away

    78/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Plumber”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.9★ from 78 Google reviews
    Hours
    Mon–Fri 7 AM–5:30 PM · Sat–Sun closed
    Address
    5020 Hershey Ln, West Richland, WA 99353
    View profile for Atomic Plumbing Services(509) 438-5333

  13. #13 Piche Backflow Testing

    Based in Richland, 21 mi away

    77/100CR Score

    Ranked #13 because of its Google rating and trade focus: 4.7★ from 17 Google reviews, listed on Google as “Plumber”.

    Based on 5 of 8 factors; credentials, recency and availability not yet collected.

    • 4.7★ from 17 Google reviews
    Address
    1941 Pheasant Ln, Richland, WA 99353
    View profile for Piche Backflow Testing(509) 539-1703

  15. #15 The Drain Surgeon

    Based in Richland, 24 mi away

    77/100CR Score

    Ranked #15 because of its Google rating and trade focus: 4.0★ from 49 Google reviews, listed on Google as “Plumber”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.0★ from 49 Google reviews
    Hours
    Mon–Sun 8 AM–5 PM
    Address
    742 Mansfield St, Richland, WA 99352
    View profile for The Drain Surgeon(509) 948-0653

  16. #16 Coy's Plumbing

    Based in Prosser

    77/100CR Score

    Ranked #16 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.

    • 4.0★ from 29 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun closed
    Address
    130 W Nunn Rd, Prosser, WA 99350
    View profile for Coy's Plumbing(509) 786-4319

  17. #17 All-City Backflow

    Based in West Richland, 21 mi away

    74/100CR Score

    Ranked #17 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Plumber”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 9 Google reviews
    Hours
    Mon–Sat 7:30 AM–8 PM · Sun closed
    Address
    4541 Maple Ln, West Richland, WA 99353
    View profile for All-City Backflow(509) 392-9144

  20. #20 Gravity Plumbing

    Based in Richland, 25 mi away

    72/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Plumber”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 18 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    30 Nuclear Ln, Richland, WA 99354
    View profile for Gravity Plumbing(509) 205-5579

  21. #21 Shephard Plumbing LLC

    Based in Richland, 23 mi away

    71/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.7★ from 15 Google reviews, listed on Google as “Plumber”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.7★ from 15 Google reviews
    Hours
    Mon–Fri 8 AM–4 PM · Sat–Sun closed
    Address
    1846 Terminal Dr Suite 101, Richland, WA 99354
    View profile for Shephard Plumbing LLC(509) 673-7362

  22. #22 Kohler Plumbing

    Based in Kennewick, 22 mi away

    70/100CR Score

    Ranked #22 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.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat 9 AM–1 PM · Sun closed
    Address
    11905 S Bermuda Rd, Kennewick, WA 99338
    View profile for Kohler Plumbing(509) 378-1850

  23. #23 Cray Plumbing

    Based in Kennewick, 24 mi away

    69/100CR Score

    Ranked #23 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.

    • 4.6★ from 11 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat–Sun closed
    Address
    1103 S Sandlewood Pr SE, Kennewick, WA 99338
    View profile for Cray Plumbing(509) 783-7922

  24. #24 Double J Excavating Inc.

    Based in Richland, 24 mi away

    69/100CR Score

    Ranked #24 because of its Google rating and review volume: 4.9★ from 66 Google reviews, 66 Google reviews.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 4.9★ from 66 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2554 Robertson Dr, Richland, WA 99354
    View profile for Double J Excavating Inc.(509) 627-2030

  25. #25 Allied Trenchless

    Based in Richland, 24 mi away

    69/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Plumber”.

    Based on 6 of 8 factors; credentials and recency not yet collected.

    • 5.0★ from 6 Google reviews
    Hours
    Mon–Fri 8 AM–4:30 PM · Sat–Sun closed
    Address
    1761 George Washington Way #389, Richland, WA 99354
    View profile for Allied Trenchless(509) 371-8706

All 27 plumbers

#1 to #25 are shown in full above. Here are #26 to #27, in CR Score order; each links to its profile.

plumbers in Prosser, ranks 26 to 27
RankBusinessCR ScoreGoogle ratingDistance
26Mahaffey Enterprises Inc634.5★ (14)25 mi
27Flaminco LLC603.0★ (20)24 mi

Also serving Prosser

6 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 Prosser
BusinessGoogle ratingDistance
C & M Plumbing Inc23 mi
Doc Water Heater5.0★ (1)21 mi
Maintenance Plus, LLC5.0★ (2)17 mi
Mid-Columbia Backflow5.0★ (2)24 mi
Sals Pump ServicesIn Prosser
Scaroni and Sons Backflow Services5.0★ (2)17 mi

How much do plumbers cost in Prosser?

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

How much do plumbers cost in Prosser?
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 Washington

In Washington, Washington State Department of Labor & Industries licenses Contractor registration and plumber certificates.

  1. Search the business name or license number on the Washington State Department of Labor & Industries 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 Prosser plumbers

We scored 27 Prosser 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 Prosser 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 Prosser: frequently asked questions

Who is the best plumber in Prosser?

By CR Score, the highest-ranked plumber in Prosser, WA is Precision Pump and Well Services with a CR Score of 89/100. It has 4.9★ from 118 Google reviews. It is open 24/7. Generations Trenchless and Plumbing (#2) and Shadow Mountain Septic and Plumbing LLC (#3) follow. We ranked 27 plumbers on 8 factors, last updated October 22, 2026.

How many plumbers are there in Prosser?

ContractorsRanked ranks 27 plumbers serving Prosser, WA. 3 of them are based in Prosser; the rest serve it from nearby towns. Another 6 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which plumbers in Prosser are open 24/7?

4 ranked plumbers in Prosser post 24/7 hours. The highest-ranked are Precision Pump and Well Services (#1), Shadow Mountain Septic and Plumbing LLC (#3) and Stricker Maintenance And Draincleaning (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which plumbers in Prosser work on weekends?

13 of 27 ranked plumbers post Saturday hours and 11 post Sunday hours. The highest-ranked open Saturdays are Precision Pump and Well Services (#1), Generations Trenchless and Plumbing (#2) and Shadow Mountain Septic and Plumbing LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.

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

In Washington, Washington State Department of Labor & Industries handles licensing and covers Contractor registration and plumber certificates. Search the business or license number at https://secure.lni.wa.gov/verify/.

How much does water heater replacement cost in Prosser?

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

What Google rating do Prosser plumbers have?

The median Google rating among 27 rated plumbers in Prosser is 4.8★, with a median of 16 reviews. Generations Trenchless and Plumbing has the most, 172 reviews, and ranks #2. 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 Prosser

  1. October 2026: CR Scores recalculated for 27 plumbers serving Prosser.

More plumbers and Prosser pages

Other trades in Prosser