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DSM Plumbing & Water SystemsPlumber in Oshawa, ON

DSM Plumbing & Water Systems is a plumber at 9 Thornbury St, Courtice, ON L1E 2B9, ranked #9 of 226 plumbers in Oshawa and rated 4.9 from 409 Google reviews. Open 7 days a week.

Oshawa, ONUpdated 0 paid placements in any rankingHow we rank

Call (905) 728-3270Website ↗

Key facts

Key facts about DSM Plumbing & Water Systems
Address9 Thornbury St, Courtice, ON L1E 2B9, Oshawa, ONGet directions
Phone(905) 728-3270
Websitedsmplumbingservice.ca
HoursMonday to Friday: 7:30 AM – 8:30 PM; Saturday and Sunday: 9 AM – 5 PM
Google rating4.9 from 409 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Oshawa and 6 towns within 40 km: Ajax, Pickering, Uxbridge, Port Hope, Markham and Scarborough.

Based in Oshawa, ONView on map

Opening hours

Opening hours for DSM Plumbing & Water Systems
DayHours
Monday7:30 AM – 8:30 PMevening
Tuesday7:30 AM – 8:30 PMevening
Wednesday7:30 AM – 8:30 PMevening
Thursday7:30 AM – 8:30 PMevening
Friday7:30 AM – 8:30 PMevening
Saturday9 AM – 5 PM
Sunday9 AM – 5 PM
  • Open evenings (after 6 PM)
  • Open Saturdays
  • Open Sundays

Typical plumbing prices

Typical plumbing prices
JobLowTypicalHigh
Water heater replacementPer unit, installed (unit plus labor); typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)CA$1,240CA$1,890CA$2,570

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

Compare nearby plumbers

DSM Plumbing & Water Systems compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
DSM Plumbing & Water Systems (this business)—614.9 (409)—YesYes
Call the Plumbing Doctor Inc. & Call the Foundation Doctor Inc.#7614.8 (182)—YesYes3.5 km
Precision Plumbing & Drain Service#8614.9 (134)—YesYes9.9 km
Forward Mechanical Plumbing and Gas#10614.9 (111)—YesYes13.7 km

See all 226 ranked plumbers in Oshawa

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.9from 409 Google reviews

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Questions about DSM Plumbing & Water Systems

How is DSM Plumbing & Water Systems ranked in Oshawa?

DSM Plumbing & Water Systems is ranked #9 of 226 plumbers in Oshawa by CR Score, with 61 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 DSM Plumbing & Water Systems’ hours?

DSM Plumbing & Water Systems is open 7 days a week. Its listed hours are Monday to Friday, 7:30 AM – 8:30 PM; Saturday and Sunday, 9 AM – 5 PM. On Saturdays it is open 9 AM to 5 PM, and on Sundays 9 AM to 5 PM. Hours come from the business listing; holiday hours may differ.

What areas does DSM Plumbing & Water Systems serve?

Serves Oshawa and 6 towns within 40 km: Ajax, Pickering, Uxbridge, Port Hope, Markham and Scarborough. 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 DSM Plumbing & Water Systems?

DSM Plumbing & Water Systems has a rating of 4.9 from 409 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 DSM Plumbing & Water Systems?

Call DSM Plumbing & Water Systems on (905) 728-3270. The business is at 9 Thornbury St, Courtice, ON L1E 2B9, Oshawa, ON. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

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