D & R Plumbing, Inc

Plumbing and Backflow Specialists

Familyowned and operated since 1955

We Address Your Immediate Needs


Fully Qualified & Insured Professionals

Years of Proven Customer Satisfaction

Backflow Prevention Testing

Testing With D&R Plumbing Ensures:

  • Over 65 years of experience to repair & troubleshoot your Backflow Prevention Devices.
  • We keep copies of your test reports for up to 3 years just in case the water or health department needs to see copies!
  • Whether you have over fifty valves or one, we can take care of them for you.
  • We are qualified to test Backflow devices for airlines, schools, apartments, hospitals, medical buildings, mobile home parks, and homeowners, just to name a few of our customers.

Backflow Preventer Theft Protection

Backflow Preventers are being stolen at an unprecedented rate! Thieves take the devices down to the local scrap yard for pennies on the dollar.

The devices are usually ripped out of the ground destroying the underground piping. To prevent your Backflow devices from being stolen, you can do one of the following: pour concrete pads, install cages, or install Sentry theft deterrent systems.

Another great tip is to always paint the devices, painting them cuts the scrap value in half. It is easy to do yourself or if you would like we can take care of it for you!

Tankless Water Heaters

Factory authorized service reps for Takagi/AO Smith and Nortitz tankless water heaters. We also have the experience to service other makes of tankless water heaters.

D&R Plumbing, Inc can also design, build and troubleshoot your tankless system whether its one or multiple units.

As a family-owned small business, we make it a priority to provide quality services to homeowners and businesses alike. We promise to deliver qualified, educated professionals, that will do the job correctly the first time we are called out. We stay within prescribed maintenance or household budgets and try to stay away from spending any extra dollars.

Our Mission

Is to provide quality work at competitive prices. We are committed to building long term relationships with our customers. Customer loyalty is our main goal.

About Us

We are a family owned California State Licensed & Insured Plumbing Contractor based in Chino, CA since 1994 & in Southern California since 1955! Our Company was originally founded by Mike Tommaney Sr. a second generation Master Plumber in February of 1955. A change of watch took place in 1994 when the Company was taken over by Mike Tommaney Jr, a third generation Master Plumber. Mike is very hands on, you will find him out in the field providing quality service to his customers.

Our Service Area

We service Chino, Ontario Claremont, Montclair, Rancho Cucamonga, Pomona, Covina, San Dimas, Glendora, La Verne, West Covina, City of Industry, Irwindale, Walnut, Rowland Heights and neighboring areas, portions of Imperial County, Riverside County & SW Arizona.