Best plumbers in Oconomowoc, WI

The highest-scoring plumber in and near Oconomowoc is Cardinal Heating, Cooling, Plumbing & Electric (score 80, 5.0 stars from 357 Google reviews). 5 companies meet the 5 Star standard within about 16 miles.

Last updated Nov 1, 2026How we rank
  1. 1

    Cardinal Heating, Cooling, Plumbing & Electric

    5.0 · 357 Google reviewsSussex, WI
    80SCORE
  2. 2

    Preferred Plumbing

    4.9 · 191 Google reviews
    72SCORE
  3. 3

    Seider Heating, Plumbing & Electrical

    4.8 · 387 Google reviewsWaukesha, WI
    70SCORE
  4. 4

    Jon Debelak Plumbing & Heating Inc

    4.8 · 213 Google reviewsSussex, WI
    67SCORE
  5. 5

    P.J.'s Plumbing Co., Inc.

    4.6 · 262 Google reviewsSussex, WI
    63SCORE

We list only companies that clear our published bar, so this area is still filling in. As more plumbers near Oconomowoc qualify, they'll appear here automatically.

Compare the top 5

Top plumbers in Oconomowoc by 5 Star Score
#CompanyScoreGoogle ratingReviewsYearsBased in
1Cardinal Heating, Cooling, Plumbing & Electric805.0357–Sussex
2Preferred Plumbing724.9191–
3Seider Heating, Plumbing & Electrical704.8387–Waukesha
4Jon Debelak Plumbing & Heating Inc674.8213–Sussex
5P.J.'s Plumbing Co., Inc.634.6262–Sussex

Plumbers in Oconomowoc: quick answers

Who is the highest-rated plumber in Oconomowoc, WI?

Cardinal Heating, Cooling, Plumbing & Electric has the highest 5 Star Score among plumbers in and near Oconomowoc: 80 out of 100, with a 5.0 star Google rating from 357 reviews.

How many 5 Star plumbers serve Oconomowoc?

5 plumbers meet our standard within about 16 miles of Oconomowoc: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 5 have 1,410 Google reviews between them, averaging 4.82 stars.

How are these plumbers ranked?

By 5 Star Score: rating quality adjusted for review count (45 points), review volume (25), review recency (15), years in business (10) and license verification (5). Businesses cannot pay to change their score.

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Ratings and review counts come from each company's public Google listing and are re-checked monthly. 5 Star Home Service Pros is independent; companies cannot pay for placement.