2.2 mi
Plumbers in Ontario, CA
Plumbers
155 results
Sorted from nearest to farthest.
Registered and featured plumbers
Other local businesses
Loading local businesses…
3.6 mi
2.4 mi
2.4 mi
2.2 mi
3.2 mi
2.6 mi
3.0 mi
2.2 mi
2.8 mi
3.4 mi
3.6 mi
3.1 mi
2.6 mi
1.2 mi
2.9 mi
3.6 mi
2.9 mi
2.5 mi
3.5 mi
3.1 mi
1.9 mi
1.1 mi
1.1 mi
3.4 mi
3.1 mi
3.5 mi
2.1 mi
3.5 mi
2.2 mi
2.2 mi
3.7 mi
3.3 mi
2.7 mi
2.5 mi
2.8 mi
1.1 mi
2.9 mi
1.1 mi
2.8 mi
- Unclaimed
Plumbers in Ontario, CA: by the numbers
There are 155 plumbers with a phone number within 10 miles of Ontario, CA, from public Google Maps data and state license records. 32 have a state license we could confirm, and those with a Google listing average 4.8 stars across 42,081 reviews.
- with a phone number
- 155
- with a confirmed state license
- 32
- open 24 hours or for emergencies
- 64
- come to you (service area)
- 32
Highest rated on Google near Ontario, CA
Businesses with at least 20 Google reviews, sorted by rating. Ratings come from Google, not from Pros411.
- 1AS Plumbing Mechanical5 ★ · 684 reviews · 8.2 mi
- 2Scott Cole Plumbing5 ★ · 593 reviews · 8 mi
- 3Dependable Rooter & Plumbing5 ★ · 579 reviews · 4.1 mi
- 4Royalty Plumbing and Drain5 ★ · 548 reviews · 2.2 mi
- 524 Rooter & Plumbing, Inc.5 ★ · 463 reviews · 7.5 mi
Hours
Of the 120 businesses in this search that list their hours on Google, 102 are open on Saturdays and 88 on Sundays. 64 are open 24 hours. 84 have 4.5 stars or more with at least 10 reviews.
Good to know in Inland Empire
Riverside and San Bernardino have hot summers, often above 100°F, Santa Ana winds and a long wildfire season, so air conditioning and roofing are year-round businesses here.
Weather and your home in Inland Empire (area)
- days a year at 90°F or more
- 110
- days a year at 100°F or more
- 28
- freezing nights a year (32°F or below)
- 2
- hail reports in Riverside County, 2016 to 2025 (3 of 1 inch or larger)
- 7
- It does not freeze every year: it happens in 69% of years, about 2 nights a year on average. When it does, exposed pipes are the first to suffer: cover them and disconnect hoses. ncei.noaa.gov
- Tropical Storm Hilary (August 2023): roads and bridges washed out in Riverside and San Bernardino counties, 30 miles of I-10 closed and about 30 people rescued in Seven Oaks as the Santa Ana River rose. nhc.noaa.gov
- Riverside Public Utilities water averaged 194 mg/L of hardness in 2024 (11 grains per gallon): very hard. riversideca.gov
Heat and freezes: NOAA 1991-2020 climate normals at Riverside (Fire Station 3) (USC00047470). Hail: NOAA Storm Events reports by county; they depend on how many people report, so use them to compare areas. Checked October 22, 2026. NOAA Storm Events
What a plumber charges
National ranges published by cost guides, not prices from the businesses on this list. Always get the price in writing.
- Hourly rate: $45 to $200, most plumbers $70 to $120 (HomeAdvisor).
- Service call: $50 to $300 depending on the company (HomeGuide, Fixr, HomeAdvisor).
- Simple drain or toilet clog: $100 to $275 (HomeGuide).
- Tank water heater, installed: about $600 to $3,100 (HomeAdvisor, HomeGuide).
How much does a plumber cost? · Water heater replacement cost: what the cost guides say
Before you call
- If water is leaking, close the main water shut-off first.
- Describe the problem and send photos or a short video by text or WhatsApp.
- Ask what the service call costs and whether it counts toward the repair.
- Ask for the price in writing before work starts.
- In Texas, California and Florida, ask for the plumbing license number.
Frequently asked questions
How many plumbers are there in Ontario, CA?
There are 155 with a phone number within 10 miles, from public Google Maps data and state license registries.
How do I check a plumber's license in California?
In California the license is issued by the Contractors State License Board (CSLB); you can look up the number at https://www.cslb.ca.gov. Pros411 shows "License verified" when the number is in that registry and matches the business phone. 32 of the plumbers on this list have it confirmed.
Which plumbers in Ontario, CA have the best Google ratings?
Among those with at least 20 Google reviews, the highest rated in this search are AS Plumbing Mechanical (5 stars, 684 reviews), Scott Cole Plumbing (5 stars, 593 reviews), Dependable Rooter & Plumbing (5 stars, 579 reviews).
Are there plumbers open on weekends in Ontario, CA?
Yes: of the 120 that list their hours, 102 are open on Saturdays and 88 on Sundays.
Are there 24-hour plumbers in Ontario, CA?
Yes: 64 list 24-hour hours or take emergency calls. Use the "24/7 emergencies" filter on the list.
Are there plumbers who speak Spanish in Ontario, CA?
Yes: 1 says on their website that they serve customers in Spanish (for example "Se habla español"). Use the "Speaks Spanish" filter on the list.
How do I contact a plumber?
Call or WhatsApp them directly from the list or their listing. Pros411 charges customers no fee and is not a middleman: you deal with the pro directly.
Why do some listings show first?
At the top, in a yellow box, are featured listings: they are paid and labeled "Featured". Then come registered pros, in the order they last bumped their listing, and at the end businesses from public data, from nearest to farthest.