Affiliates & Memberships
Trade and community organizations that hold us to the highest standards
Why Affiliations Matter
Plumbing is a regulated trade for good reason — it protects your family, your home, and the broader public health system. Stollwerck's affiliations and certifications represent our ongoing commitment to staying current on code, safety, and quality. They're also a signal to our customers: we're held accountable by more than just our own word.
Our Affiliations
Plumbing-Heating-Cooling Contractors Association
The national trade association for plumbing, heating, and cooling contractors. Membership keeps our team current on code, safety standards, and industry best practices.
Master Builders Association
Master Builders Association of King and Snohomish Counties represents builders and trade professionals across our region, connecting Stollwerck with the broader construction community we serve.
Mukilteo Chamber of Commerce
Active members of the Mukilteo Chamber — supporting local businesses and the community we have called home for over 50 years.
Mukilteo CARES
A certified Green Business Network member, partnering with the City of Mukilteo, the Mukilteo Chamber of Commerce, and Waste Management to operate sustainably.
Mukilteo Historical Society
Proud supporters of the Mukilteo Historical Society and their stewardship of the historic Mukilteo Light Station.
Manufacturer Partnerships
We install and service equipment from these trusted manufacturers. Many require factory training and certification, which our team holds.
Water Heaters
- •Bradford White
- •Navien (tankless certified installer)
- •Bosch
Faucets & Fixtures
- •Moen
- •Delta
- •Grohe
- •Kohler
- •American Standard
- •Hansgrohe
- •Rohl
- •Waterstone Faucets
Sinks & Bath
- •Elkay
- •Toto
- •Kohler
Pumps & Disposals
- •Liberty Pumps
- •Zoeller Pump Company
- •InSinkErator
Don't see a brand? We service most major plumbing manufacturers. Give us a call.
More Than Just Logos
Beyond the badges, our team holds a current Washington State plumbing contractor license (#STOLLPL780CJ). Every plumber on our team is fully licensed — no contractors, no apprentices working unsupervised. We carry insurance above Washington state mandates so we can work where others can't.
We back every job — drain cleaning, water heater installation, sewer line replacement, gas line work — with a 1-year guarantee. If something goes wrong with our work in the first year, we make it right.
That's what these affiliations and certifications add up to: a commitment to doing plumbing the right way for the families and businesses across Snohomish County and Whidbey Island that trust us.
Ready to Work With Us?
Get in touch with our Mukilteo office today.