34 Deforest Ave, #9

East Hanover, NJ 07936

Call Us

(973) 577-5123

Proudly Serving North Jersey With Integrity Since 1994

Your Local Experts in Plumbing, Heating & Maintenance

At William C. Diamond Plumbing & Heating in New Jersey, we believe your home deserves craftsmanship you can trust and service you can depend on. Our team has spent decades building a reputation for honest work, reliable solutions, and a genuine dedication to our customers. From everyday plumbing needs to full-scale remodeling projects, we approach every job with care, precision, and a commitment to making your home safer, more efficient, and more comfortable.

Our story is rooted in strong values, hands-on expertise, and a passion for helping homeowners take pride in their spaces. That foundation began with our owner—whose journey, experience, and community dedication continue to guide everything we do today.

My Personal Side

Not Just a Master Plumber

Hey there! Thank you for visiting us here at William C. Diamond Plumbing & Heating.

In 1994, I established my own plumbing company to provide better customer service to the North Jersey community. William C. Diamond Plumbing & Heating, Inc. has grown into one of the most reliable plumbing and heating contractors serving Livingston, NJ and the surrounding areas.

Plumbing expertise runs in the family. My grandfather was a plumber, and I followed in his footsteps by joining the trade as a teenager. Over the years, I worked my way up to master plumber and continue to provide hands-on support to ensure our customers always receive the quality results they deserve.

What We Do

My Team Can Handle Any Job — No Matter the Size or Scope

Whether you need boiler repair, bathroom remodeling, water heater replacement, drain cleaning, or anything in between, we have you covered. We use only quality materials and products, and our team reflects the highest workmanship and customer service standards.

But what truly sets us apart is the personal attention we give to every customer. We never begin work without your authorization, and we treat your home with the same care and respect we would give our own—leaving it just as clean as we found it.

Meeting your needs and keeping your plumbing and heating systems running efficiently is our specialty. From emergencies to routine maintenance, there is no job we can’t handle. Let us help you achieve total home comfort and peace of mind.

To your comfort,
William C. Diamond
Owner & Master Plumber

William C. Diamond Plumbing & Heating seen on TV, on Inside Edition
When Expertise Reached the Big Screen

As Seen On TV!

Back in 2019, Bill had a moment in the national spotlight when he appeared on the television show Inside Edition. The segment highlighted his expertise, professionalism, and genuine passion for helping people—qualities that truly represent who he is both on and off the job. It was a proud moment for our entire team and a great reminder of how far dedication and honest workmanship can take you.

You can catch Bill’s full appearance on the show right here.

Our Process

Making Your Plumbing Problems A Pleasant Experience

We believe that plumbing problems don’t have to be stressful. From the moment you call to the moment the job is done, we’re committed to providing clear communication, courteous service, and reliable solutions that turn a frustrating situation into a pleasant experience.

Make Appointment

A member of our team will reach out to finalize the details.

We Arrive at Your Doorstep

…on time, ready to deliver quality workmanship with care and respect.

We Fix it. You Relax

Enjoy the comfort of knowing the job was done right—no stress, no surprises.

Ready to Experience Service You Can Trust?

Reach out today and let our team help you solve your plumbing or heating needs with honesty, care, and expert craftsmanship.