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Sterling Mainz & Sons PlumbingPlumber in Oconomowoc, WI

Sterling Mainz & Sons Plumbing is a plumber at 114 S Main St, Oconomowoc, WI 53066, ranked #21 of 161 plumbers in Oconomowoc and rated 4.4 from 40 Google reviews. Open Monday to Saturday.

Oconomowoc, WIUpdated 0 paid placements in any rankingHow we rank

Call (262) 567-4478Website ↗

Key facts

Key facts about Sterling Mainz & Sons Plumbing
Address114 S Main St, Oconomowoc, WI 53066Get directions
Phone(262) 567-4478
Websitemainzplumbingandpumps.com
HoursMonday to Friday: 7:30 AM – 5 PM; Saturday: 7:30 AM – 12 PM
Google rating4.4 from 40 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Oconomowoc and 11 towns within 25 miles: Delafield, Hartland, Pewaukee, Watertown, Sussex, Waukesha, Hartford, Jefferson, Richfield, Mukwonago and Slinger.

Based in Oconomowoc, WIView on map

Opening hours

Opening hours for Sterling Mainz & Sons Plumbing
DayHours
Monday7:30 AM – 5 PM
Tuesday7:30 AM – 5 PM
Wednesday7:30 AM – 5 PM
Thursday7:30 AM – 5 PM
Friday7:30 AM – 5 PM
Saturday7:30 AM – 12 PM
SundayClosed
  • Open evenings — no
  • Open Saturdays
  • Open Sundays — no

Typical plumbing prices

Typical plumbing prices
JobLowTypicalHigh
Water heater replacementPer unit, installed (unit plus labor); typical range of customer-reported jobs. US national range$882$1,348$1,826

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby plumbers

Sterling Mainz & Sons Plumbing compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Sterling Mainz & Sons Plumbing (this business)—564.4 (40)—YesNo
Thielmann Heating, Cooling & Plumbing#19564.9 (409)—YesYes18.1 mi
R Plumbing Inc#20564.9 (337)—NoNo12.3 mi
Burkhardt Heating, Cooling, Plumbing & Electric#22564.9 (482)—YesYes19.5 mi

See all 161 ranked plumbers in Oconomowoc

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.4from 40 Google reviews

Hired Sterling Mainz & Sons Plumbing? Write a review

Questions about Sterling Mainz & Sons Plumbing

How is Sterling Mainz & Sons Plumbing ranked in Oconomowoc?

Sterling Mainz & Sons Plumbing is ranked #21 of 161 plumbers in Oconomowoc by CR Score, with 56 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are Sterling Mainz & Sons Plumbing’s hours?

Sterling Mainz & Sons Plumbing is open Monday to Saturday. Its listed hours are Monday to Friday, 7:30 AM – 5 PM; Saturday, 7:30 AM – 12 PM. On Saturdays it is open 7:30 AM to 12 PM and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Sterling Mainz & Sons Plumbing serve?

Serves Oconomowoc and 11 towns within 25 miles: Delafield, Hartland, Pewaukee, Watertown, Sussex, Waukesha, Hartford, Jefferson, Richfield, Mukwonago and Slinger. The list is based on the business's location and the usual service radius for plumbing. Confirm your address is covered when you call.

What do Google reviews say about Sterling Mainz & Sons Plumbing?

Sterling Mainz & Sons Plumbing has a rating of 4.4 from 40 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact Sterling Mainz & Sons Plumbing?

Call Sterling Mainz & Sons Plumbing on (262) 567-4478. The business is at 114 S Main St, Oconomowoc, WI 53066. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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