Cooper Plumbing & Mechanical


Call Us at 609-586-1813

Integrity is our Standard

The Cooper Family has been in the plumbing industry for decades and what originally started out as William J Cooper Plumbing & Heating has evolved into Cooper Plumbing & Mechanical, LLC (CP&M), a full-service industrial contractor. Currently run by William J. Cooper, a fourth generation certified Master Plumber, CP&M has since developed into one of the region’s most respected and industry leading mechanical contractors that still treats their clients like they’re the only one.

CP&M is a commercial, industrial and institutional plumbing contractor that specializes in plumbing and mechanical pipe installations in water/sewer treatment facilities, warehouses, schools and commercial establishments. CP&M has spent years, setting themselves apart from others by setting the bar for delivering top-quality service, attention to detail and customer service that others in the industry strive to match. Our track record speaks for itself and so do our clients, something we strive for every day.

CP&M’s reputation in the industry is as a leader who continually completes projects on-time to the client’s approval and most importantly on budget. CP&M is proud of the track record and feel our reputation is why so many client’s comeback to us and why new clients want to work with us.

We have professional crews who specialize in HVAC and all facets of the plumbing industry. Our crew chiefs each have all the plans and specifications for each job on digital platform on tablets on-site, making changes and adaptations smooth and seamless.


Cooper Plumbing and

Mechanical LLC

NJ Plumbers Lic 5499 & 10790


Certifications and Affiliations:

NJ DPMC Prequalification (Plumbing and Boilers)

School Development Authoirty (SDA)

Registered SBE

AMSE Welding

Licensed Master Plumber

​Licensed HVACR Contractor

Utilities and Transportation Contractors Association (UTCA)

Cooper Plumbing & Mechanical specializes in:

– Water treatment Facilities

– Waste Water Treatment Facilities

– Transportation

– Warehouses

– Institutional

– Schools

– Commercial


– Restaurants