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Best Plumbers
in Ontario

Why These Plumbers?

Our goal is to connect people with the best local experts. We scored Ontario Plumbers on more than 25 variables across five categories, and analyzed the results to give you a hand-picked list of the best.

Reviewed Curated Top Picks 124 80 16

Our Selection Criteria:

  • 1. Reputation

    A history of delighted customers and outstanding service.

  • 2. Credibility

    Building customer confidence with licensing, accreditations, and awards.

  • 3. Experience

    Masters of their craft, based on years of practical experience and education.

  • 4. Availability

    Consistently approachable and responsive, so customers never feel ignored.

  • 5. Professionalism

    Providing service with honesty, reliability, and respect.

A & A Plumbing & Rooter Service

A & A Plumbing & Rooter Service is a family-owned and operated business that has been serving the residents of Ontario and the surrounding communities since 1974. It repairs and replaces water heaters, toilets, faucets, disposals, sinks, clear clogged drains, and fixes all types of leaks and breaks. The team also handles commercial and residential wastewater management, septic tank pumping, maintenance, and repairs. Customers can get free estimates, upfront pricing, and warranties on all plumbing repairs. LICENSE #406229.

2032 S Plum Ave
Ontario, CA 91761


All Pro Plumbing, Heating, Air & Electrical

All Pro Plumbing, Heating, Air & Electrical is a business in Ontario serving clients throughout the metro area and the adjoining neighborhoods. Its services range from minor repairs to major installations and replacements, with emergency services available around the clock. The company's offerings include leak detection, drain repair and replacement, hydro-jetting, sump pump services, video camera inspections, trenchless sewer relining, and water heater repair and installation. The crew can also provide water treatment and gas line service. LICENSE #680718.

5001 Ontario Mills Pkwy
Ontario, CA 91764


Cisneros Bros Plumbing

Cisneros Bros Plumbing is a residential plumbing company based in Riverside that has been serving the area and neighboring communities for over two decades. The company's crews are experienced in water leak detection and repair, tankless water heaters, hydro-jetting, and sewer camera inspections. They can also handle sewer line repair, replacement, pipelining, and pipe bursting. Other clients consult the firm for water filtration systems installation and repair. Customers can schedule a free in-person estimate. LICENSE #864345.

1335 Wybourn Ave
Riverside, CA 92503


Collier Plumbing

Collier Plumbing is a business based in Upland, serving clients from all over the Inland Empire and the surrounding neighborhoods. It has been in service for over 20 years, leveraging its extensive experience to provide professional plumbing and water heater services to residential and commercial clients. Its offerings include water heater or tankless water heater relocation, copper repiping, slab leak detection and repair, whole house water filtration systems, shower valves, faucets, drains, traps, and light industrial air systems. LICENSE #737891.

945 N 4th Ave
Upland, CA 91786


Cruz Plumbing & Rooter Services

Cruz Plumbing & Rooter Services is a family-owned and operated company serving clients in the Inland Empire, San Bernardino, and Riverside counties. Its services include drain cleaning, pipe repair and replacements, water heater installations and repair, water filtration systems maintenance, hydro-jetting, sewer inspection, pipe bursting, and pipeliners. The crew also handles PEX piping and gas line installation and repair. Both residential and commercial clients can consult the company, and free estimates are possible. LICENSE #1050063.

PO Box 691
Ontario, CA 91762


Empire Plumbing

Empire Plumbing is a business that has been serving clients throughout the Ontario metro area since 2015. It offers detailed plumbing services and basic plumbing maintenance, including inspections on water heaters, appliances, toilets, fixtures, sinks, drains, and faucets. The team is experienced in the detection and repair of leaks, copper tube repiping, PEX tube repiping, and installation and replacement of most plumbing systems. Emergency repairs are only available during business hours. LICENSE #1005919.

616 W 5th St
Ontario, CA 91762


Grace Rooter & Plumbing

Grace Rooter & Plumbing is a firm in Ontario that has been serving the area's residents and the surrounding communities for over 25 years. It provides comprehensive services entailing installation, repair, and maintenance of toilets, bathtubs, pipes, showers, dishwashers, drains, and garbage disposals. The team can also handle gas lines and sprinkler systems servicing. Other clients consult the company for water heater services, including inspections, installations, repairs, or removal and replacement. LICENSE #817808.

461 Monticello Ct
Ontario, CA 91762


Holder Plumbing

Holder Plumbing is a company serving clients in Upland, Claremont, Rancho Cucamonga, Ontario, Fontana, and surrounding areas. Its core services include drain inspections and cleaning, hydro-jetting, and installation and repair of tankless water heaters, garbage disposals, faucets, toilets, gas valves, gas piping, water lines, and showers. The team can also undertake copper repiping, PEX repiping, and the remodeling of kitchens, baths, and outdoor fixtures. Clients have access to emergency services. LICENSE #825954.

305 N 2nd Ave Ste 154
Upland, CA 91786


In and Out Plumbing

In and Out Plumbing is a business serving clients from all over the Ontario metro area and the surrounding neighborhoods. It focuses on residential plumbing problems such as leaking pipes, overflowing toilets, and backed-up drains. Families can consult the company on varying plumbing matters, including installation and repair of water heaters, faucets, fixtures, and garbage disposals. Gas leak detection and repair services, as well as emergency services, are also available. LICENSE #1030564.

Ontario, CA 91761


JIG Plumbing

JIG Plumbing has been serving Ontario and the surrounding areas since 2011. The company offers a range of services, including water heater and tankless water heaters installation and maintenance, repiping, slab leak detection and repairs, gas pipe installation and repairs, and servicing of faucets, fixtures, and other plumbing components. The company can also handle the installation or replacement of water treatment and purification systems. Customers can contact the company for estimates. LICENSE #958469.

Klaus & Sons Plumbing, Heating & Air Conditioning

Klaus & Sons Plumbing, Heating & Air Conditioning is a business based in Montclair that has been serving residential and commercial clients from all over Ontario and beyond since 1973. Its crews can perform varying plumbing repair and installation services, and they're available 24 hours a day to respond to any emergencies. The company's plumbing services span across gas lines, garbage disposals, dishwashers, water heaters, water pressure, waste traps, faucets, showers, and toilets. LICENSE #320990.

5623 Arrow Hwy
Montclair, CA 91763


Power Pro Plumbing Heating & Air

Power Pro Plumbing Heating & Air is a business located in Ontario that focuses on the installation, maintenance, and repair of plumbing and HVAC systems. Common plumbing problems that the team can fix include low water pressure, no hot water coming from the water heater, clogged or running toilet, leaky faucets, slowly draining shower or sink drain, and broken garbage disposals. For more than 15 years, clients in the region have depended on the company for 24/7 emergency services. LICENSE #766254.

2025 Elm Ct
Ontario, CA 91761


R.E.Plumbing Heating & Drain Cleaning

R.E. Plumbing Heating & Drain Cleaning has been serving the residents of Upland and Rancho for over 20 years, delivering personalized solutions and attention to each client. It serves residential and commercial clients, and its offerings include installation and repair of fixtures, faucets, water filtration systems, dishwashers, irrigation systems, water heaters, and garbage disposals. It also focuses on leak detection and drain maintenance. Clients can also consult the company for gas line services. LICENSE #902042.

621 E Pine St
Upland, CA 91786


Ray May Plumbing

Ray May Plumbing is a family-owned and operated company that has been serving the residents of Montclair and the surrounding neighborhoods since 1961. It serves both residential and commercial clients, with its services ranging from minor repairs and maintenance services to complex installations. The technicians perform pipe and slab leak detection services using video cameras and radio frequency signals to pinpoint the exact location of damage and save time and money. LICENSE #981297.

4861 Arrow Hwy
Montclair, CA 91763


Steve's Service

Steve's service is a local family-owned plumbing and HVAC company serving Upland, Rancho Cucamonga, Claremont, and the surrounding areas. It has been serving the residents and business owners in the Inland Valley for nearly 30 years. Its services range from drain cleaning to water heater sales and service, ultrasound slab leak detection, pipe replacement, sink and faucet sales and service, toilet sales and service, gas line installation, and full bathroom remodels. LICENSE #744873.

665 N Central Ave
Upland, CA 91786


The Plumbers Connection Inc.

The Plumbers Connection Inc is a veteran owned, insured, and bonded plumbing company that has been serving Montclair and the greater Ontario region for more than 18 years. It handles any commercial or residential plumbing service, including plumbing repairs, new plumbing and heating system installations, drain cleaning, water line repairs, hydro jetting, new natural gas lines, and gas leak detection. Customers can also consult the company for drain camera inspections and even total pipe replacements. LICENSE #1001892.

8926 Benson Ave Ste C
Montclair, CA 91763


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