The Experienced Plumber in Diamond Bar, CA

When you need a plumber in Diamond Bar, CA, Top Notch Plumbing Inc. is the name to trust! We’ve helped local homeowners and business owners with plumbing issues since 2017. Our experienced team of licensed, bonded, and insured plumbers is here for you 24 hours a day.

We Are the Team You Can Depend On

  • Providing service to Diamond Bar since 2017
  • Licensed, bonded, and insured plumbers
  • Check our five-star reviews on Google
  • Available 24 hours a day

Reliable Solutions for A Host of Plumbing Concerns

From trenchless plumbing to water heater installation, we do it all. Below are some of our featured plumbing services in the region:

sewerlinepipe lining

Trenchless pipe lining, including CIPP, involves no excavation, meaning we work on your pipes from the inside. Our team can install a liner to refresh your pipes, extending their service life and providing peace of mind in knowing you won’t have to deal with a plumbing emergency in the future.


The traditional method of dealing with sewer pipe issues has been to dig up your yard, but with pipe bursting, we can get rid of old pipes while simultaneously installing new ones. All work is completed from the surface, and your new pipes last for decades to come.


When it comes to drain and sewer work, the experienced professionals at Top Notch Plumbing have you covered. Our plumbers are equipped with advanced video inspection equipment to pinpoint the source of sewer and drain problems, allowing us to deliver targeted relief.

drain cleaning

Drain clogs can lead to all kinds of issues, including overflowing toilets, standing water in tubs, showers and sinks, and water damage to your property. Even in the middle of the night, our drain cleaning specialists are standing by to help.


Problems with your sewer pipes can result in messy backups that may even spread dangerous bacteria. If you have a sewer pipe issue, you’ll be glad to know that Top Notch Plumbing has the latest sewer line repair tools and equipment.

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When it comes to general plumbing around your home or business, Top Notch Plumbing is here to help. We can fix that leaking fixture, repair those loose pipe joints, and offer peace of mind in the process.

Emergency plumbing

At Top Notch Plumbing, we know you can’t afford to wait around in a plumbing emergency, so our team is here for you 24 hours a day, seven days a week. Call anytime to schedule service from an experienced, friendly plumber.

Water Softener

We service traditional tank water heaters with repair, maintenance, and installation all year long. If you’re dealing with no or low hot water, give our team a call for fast relief.

Tankless water heater

A tankless water heater is an investment in your comfort. Contact Top Notch Plumbing to learn how easy it is to get endless hot water in your home.

water heater

With a water softener system, you’ll no longer have to deal with that hard water taste in your drinking water, and you won’t have to put up with faded clothing or water spots. Our systems are custom-designed for your home!

Contact Us for Service From Trusted Plumbing Pros

For comprehensive services provided by a local plumber in Diamond Bar, CA, Top Notch Plumbing is the team to call. Reach out to our team by calling us or filling out the online form to schedule an appointment.