DePasquali Plumbing

Our team

At DPI, our team consists of highly skilled professionals with a deep commitment to providing exceptional service to our clients. With over 70+ years of experience in the industry, our team members possess the expertise to tackle even the most complex plumbing challenges. From our master plumbers to our project managers and support staff, every team member is dedicated to upholding our core values of integrity, professionalism, and collaboration and working together to deliver top-tier solutions that exceed client expectations.


Don Holtz Sr. took DPI from a small plumbing service entity to a fully commercial plumbing enterprise by contracting work with major contractors and companies over the last 40 years. He started his career in the field under Frank DePasquali during the company’s early days. Don transferred that mechanical field experience and mixed it with a natural knack for business. He can be credited with developing DPI into what it is today, a commercial and industrial company and partner to many contractors and corporations.

Vice President
BA, MA, Master Plumber
HP #4292 Allegheny County

Don Holtz Jr. attended the University of Arizona (Bachelors degree) and earned a Master’s degree shortly after from Point Park University in Pittsburgh. He attended Mon Yough Plumbing School Apprenticeship Program for his journeyman license and master’s license in plumbing. He later taught 3 years within that same program. His focus is to expand DPI’s capabilities while highlighting the company’s existing talents. Don Jr. is an accomplished senior estimator and heads up all sales and negotiations. He is currently the company’s vice president. His favorite role is as a husband and devoted father to his three daughters.

Join Our Team & Build Your
Career in Plumbing with DPI

DPI is committed to investing in our employees and fostering a positive, supportive work environment. Through our apprenticeship program, we offer aspiring plumbing professionals the opportunity to receive hands-on training from skilled mentors and acquire the knowledge and expertise needed to excel in this dynamic industry. If you’re looking for a challenging and rewarding career path, click below to learn more about working at DPI and explore our current job opportunities.