Built the Right Way: How Billy Zappa and Duwamish Plumbing Are Serving Bonney Lake with Integrity
- The Insider
- 4 days ago
- 3 min read

Billy Zappa didn’t start Duwamish Plumbing to build a big franchise. He started it to do the work the right way, right here in Bonney Lake. Built on honesty, craftsmanship, and accountability, his locally owned business reflects both his values and his commitment to the community he calls home.
Built the Right Way: The Story of Duwamish Plumbing
Duwamish Plumbing wasn’t created to be the biggest plumbing company in the region; it was created to be the right one.
After years working in the plumbing industry, Billy saw a side of the business that didn’t sit well with him: homeowners being overcharged, rushed through repairs, or left in the dark about what was actually being done in their homes. That experience sparked a simple but powerful idea, to build a company that treated customers the same way he’d want his own family treated.
Bonney Lake was the natural place to do it.
“This is where my family and my roots are,” Billy shared. “It’s a growing community with a lot of pride, and I wanted to build something local, something people recognize, trust, and recommend to their neighbors.”
That philosophy became the foundation of Duwamish Plumbing.
The Reality of Starting a Small Business
Like many local business owners, Billy’s early days were anything but easy. He wore every hat imaginable, handling field work, estimates, invoices, scheduling, and marketing, often long after the workday ended.
Cash flow challenges, time management, and figuring out how to grow responsibly tested his resolve. But instead of chasing rapid expansion, Billy stayed focused on consistency and discipline.
“I focused on quality work, strong communication, and showing up when I said I would,” he said.
Over time, that approach paid off. Word-of-mouth referrals grew, repeat customers followed, and Duwamish Plumbing’s reputation began carrying the business forward.

Serving Bonney Lake, One Home at a Time
What Billy enjoys most about his work is the peace of mind it provides to homeowners. Plumbing issues can quickly become stressful and overwhelming, especially when leaks, flooding, or hot water failures strike without warning.
Being able to step in, explain the situation clearly, and fix the problem the right way is what keeps him motivated.
“Plumbing isn’t just pipes and fittings,” Billy explained. “It’s protecting someone’s home and their sense of security.”
That mindset has led to long-term relationships with customers across Bonney Lake, many of whom return again and again when issues arise.
Values That Set Duwamish Plumbing Apart
At the core of Duwamish Plumbing are three guiding values:
Honesty
Quality
Accountability
The company doesn’t upsell unnecessary work, doesn’t cut corners, and stands behind every installation. Transparency is a key differentiator, customers know what’s being done, why it’s needed, and what it will cost before work begins.
Billy also prioritizes higher-quality materials and modern installation methods, ensuring repairs last well beyond inspection day.

Looking Ahead: A Legacy Business in Bonney Lake
Rather than chasing fast growth, Billy’s vision for the future is steady and intentional. He plans to expand the team carefully while maintaining the same level of service that customers have come to expect.
Long term, his goal is for Duwamish Plumbing to become a true household name in Bonney Lake, known for reliability, professionalism, and community involvement.
“This is a legacy business for my family,” he said. “And I plan to keep it rooted right here.”
How to Contact Duwamish Plumbing
If you’re a Bonney Lake resident in need of plumbing services, or even just some guidance before scheduling work, Billy encourages people to reach out.
📞 Phone/Text: 253-882-5695
Duwamish Plumbing is local, responsive, and always happy to help.
At the Bonney Lake Insider, we’re proud to support local businesses like Duwamish Plumbing, companies built on integrity, hard work, and a genuine commitment to our community.


