The Best Plumbing Contractors in Ontario, CA

Compare the highest-rated plumbing professionals in Ontario, California. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Mr. Rooter Plumbing of Ontario

4.8
(280 reviews)
Verified

A highly-rated, locally-owned franchise of the national Mr. Rooter brand. They are known for their professional, uniformed technicians, upfront pricing, and a strong focus on customer service. They emphasize both residential and commercial plumbing solutions and offer 24/7 emergency service.

1145 W Phillips St, Ontario, CA 91762

Specialties & Features

Emergency plumbing repairs
Drain cleaning and sewer services
Water heater installation and repair

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Allstar Plumbing & Rooter

4.7
(180 reviews)
Verified

A family-owned and operated business known for its rapid response times and honest, straightforward service. They have built a strong reputation in the Inland Empire for handling everything from minor leaks to major repipes and sewer line replacements.

1537 N Euclid Ave, Upland, CA 91786 (Serves Ontario directly)

Specialties & Features

Pipe installation and replacement
Leak detection and repair
Bathroom and kitchen plumbing

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
#3

Rooter Solutions

4.6
(150 reviews)
Verified

Specializes in advanced drain and sewer services, including trenchless pipe repair, which minimizes property damage. They also provide a full suite of general plumbing services and are praised in reviews for their technical expertise and effective, long-term solutions.

9029 Utica Ave #105, Rancho Cucamonga, CA 91730 (Serves Ontario directly)

Specialties & Features

Drain cleaning and sewer services
Trenchless pipe replacement
Commercial plumbing services

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes

Why These Are the Top Plumbing Contractors in Ontario

** The plumbing market in Ontario, California, is robust and highly competitive, characteristic of a major logistics and distribution hub within the Inland Empire. The average quality of service is high, as contractors must maintain strong reputations to compete effectively. Customers have access to a mix of long-established local companies and reputable national franchises. **Competition Level:** High. There are numerous providers, forcing businesses to compete on service quality, response time, and pricing. **Typical Pricing:** Pricing is competitive but aligns with Southern California averages. A standard service call typically ranges from $80 - $150. Emergency or after-hours services command a premium. Major projects like water heater replacements can range from $1,200 to $3,500+, and full repipes can be $5,000+, depending on the home's size. The most reputable companies provide transparent, upfront quotes to avoid surprises. **Notable Trend:** Many top-rated providers in the area, like Rooter Solutions, heavily promote and specialize in "trenchless" sewer repair technology, which is a significant selling point for homeowners looking to avoid extensive landscape or concrete demolition.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Ontario regulations and climate

Frequently Asked Questions About Plumbing in Ontario

Get answers to common questions about plumbing services in Ontario, California.

1What are typical plumbing service costs in Ontario, CA, and what factors influence the price?

In Ontario, typical service call fees range from $75 to $150, with hourly labor rates between $80 and $200. Major factors include the job's complexity, parts required, and whether it's an emergency. Local costs are also influenced by California's strict licensing and bonding requirements for plumbers, which ensure quality but contribute to professional service pricing. Always request a detailed, written estimate before work begins.

2How does Ontario's hard water affect my plumbing, and what services are recommended?

Ontario's water is notoriously hard, leading to significant scale buildup in pipes, water heaters, and fixtures, which reduces efficiency and lifespan. We highly recommend installing a whole-house water softener to prevent damage and improve appliance performance. Regular descaling services for your water heater and faucet aerators are also crucial local maintenance tasks to prevent costly repairs.

3Are there specific local regulations for plumbing repairs or installations in Ontario homes?

Yes, all plumbing work in Ontario must comply with the California Plumbing Code (CPC) and local amendments enforced by the Ontario Building & Safety Division. Key local considerations include strict backflow prevention requirements to protect the water supply and regulations on pipe materials suitable for our soil conditions. A licensed contractor will always pull the necessary permits for significant work, which is a critical sign of a reputable provider.

4What seasonal plumbing issues should Ontario homeowners prepare for?

The primary seasonal concern is summer, when increased irrigation use can strain outdoor plumbing and sprinkler systems, leading to leaks. Conversely, while freezing is rare, occasional winter cold snaps can threaten exposed pipes in garages or crawl spaces. It's also wise to service your water heater before the busy holiday season when guest usage peaks and to clear drains before the rainy season to prevent backups.

5What should I look for when choosing a plumber in Ontario to ensure they are qualified?

Always verify the plumber holds a valid, current **California C-36 Plumbing Contractor License** issued by the CSLB (Contractors State License Board). You can check this instantly online using the CSLB's "Check a License" tool. Additionally, choose a locally established company familiar with Ontario's housing stock, soil, and water issues, and ensure they provide both proof of insurance and warranties on their workmanship.