Most plumbing contractors pick their next software, supplier, or fleet provider after a 10-minute conversation at a plumbing trade show.

The 2026 calendar has 65+ US plumbing conferences, plumbing expo events, and plumbing convention gatherings, from 10,000+ attendee shows like the WWETT show and Design & Construction Week to contractor-focused events like PHCC Connect and ServiceTitan Pantheon. Different buyer profiles at each: specialty plumbers at WWETT, kitchen-bath at Design & Construction Week, service contractors at PHCC Connect and Nexstar Super Meeting.

Here's our list of the top 10 plumbing conferences 2026 and plumbing trade shows with dates, locations, and who each one is best for.

WWETT Show

Location: Indianapolis, IN

Dates: February 16-19, 2026

Purpose: Training / Certification

Attendee Count: 10,000+

Website: https://www.wwettshow.com/

The WWETT show (Water & Wastewater Equipment, Treatment and Transport) focuses on wastewater, septic, drain cleaning, and specialty plumbing. 10,000+ attendees, 500+ exhibitors. 100+ education sessions across 10 tracks. Sewer camera inspections, pipe lining, trenchless rehabilitation. CE credits available. Recurring service revenue and RTO/fleet are major themes.

Why attend: 10,000+ wastewater and specialty plumbing professionals. Four days in Indianapolis. Best for companies selling drain cleaning equipment, septic systems, trenchless technology, or fleet and software for service trucks.

Design & Construction Week (KBIS + IBS)

Location: Orlando, FL

Dates: February 17-19, 2026

Purpose: Growth / Revenue

Attendee Count: 10,000+

Website: https://designandconstructionweek.com/ | https://www.kbis.com/ | https://www.buildersshow.com/

Design & Construction Week co-locates KBIS 2026 (Kitchen & Bath Industry Show) and the IBS builders show (NAHB International Builders' Show). KBIS draws kitchen and bath fixtures, faucets, water heaters, and smart home products. IBS draws builders and remodelers who specify plumbing. 500+ exhibitors at each show. Plumbers, builders, designers, and contractors in one venue.

Why attend: 10,000+ at each show, co-located. Three days in Orlando. Best for companies selling residential plumbing fixtures, kitchen and bath products, or products into the remodel and new-construction channel.

PHCC Connect

Location: Milwaukee, WI

Dates: October 19-22, 2026

Purpose: Training / Certification

Attendee Count: 500-1,000

Website: https://www.phccweb.org/phccconnect2026-save-the-date/

PHCC Connect is the national plumbing convention for the Plumbing-Heating-Cooling Contractors Association. 20+ educational sessions on workforce, business management, and leadership. Product & Technology Showcase with 75+ exhibitors. Hilton Milwaukee City Center. Focus on contractor operations and advocacy.

Why attend: 500-1,000 plumbing, heating, and cooling contractors. Four days in Milwaukee. Best for companies selling into residential and commercial PHCC member contractors.

AWWA ACE Annual Conference & Exposition

Location: Washington, DC

Dates: June 21-24, 2026

Purpose: Training / Certification

Attendee Count: 10,000+

Website: https://ace.awwa.org

AWWA ACE is the American Water Works Association's annual conference and exposition. 10,000+ water industry professionals. Covers drinking water, treatment, distribution, and infrastructure. Plumbing contractors and engineers attend for water systems, piping, and municipal projects.

Why attend: 10,000+ water and wastewater professionals. Four days in Washington, DC. Best for companies selling water infrastructure, treatment, or piping products.

WEFTEC

Location: New Orleans, LA

Dates: September 27 - October 1, 2026

Purpose: Training / Certification Attendee

Count: 10,000+

Website: https://www.weftec.org/

WEFTEC (Water Environment Federation Technical Exhibition and Conference) is the largest annual wastewater conference in North America. 10,000+ attendees. Collection systems, treatment, pumping, and trenchless technology. Overlaps with plumbing contractors in sewer, drain, and municipal work.

Why attend: 10,000+ wastewater and water professionals. Five days in New Orleans. Best for companies selling wastewater equipment, trenchless technology, or collection system products.

Flow Expo USA

Location: Pomona, CA

Dates: March 14, 2026

Purpose: Growth / Revenue

Attendee Count: 5,000-10,000

Website: https://flowexpousa.com/

Flow Expo USA is a West Coast HVAC, plumbing, and mechanical plumbing expo. 5,000-10,000 attendees. Exhibitors and education for contractors, distributors, and technicians. Covers piping, hydronics, and building systems.

Why attend: 5,000-10,000 HVAC and plumbing professionals. One day in Pomona. Best for companies selling into the California plumbing and mechanical channel.

ServiceTitan Pantheon

Location: Orlando, FL

Dates: October 5-7, 2026

Purpose: Growth / Revenue

Attendee Count: 2,000-5,000

Website: https://www.servicetitan.com/events

ServiceTitan Pantheon is ServiceTitan's annual event for trades professionals, including plumbing and HVAC. Walt Disney World Swan & Dolphin Resort. Training, networking, keynotes. Software and technology for home services contractors.

Why attend: 2,000-5,000 plumbing and HVAC contractors using or evaluating field service software. Three days in Orlando. Best for companies selling software, marketing, or technology into the home services trades.

MCAA Annual Convention

Location: Phoenix, AZ

Dates: March 15-19, 2026

Purpose: Training / Certification

Attendee Count: 2,000-5,000

Website: https://www.mcaa.org/events/calendar/2026-mcaa-annual-convention/

The MCAA (Mechanical Contractors Association of America) Annual Convention brings together mechanical contractors, including commercial plumbing. Theme: Beyond the Horizon. Keynotes from Drew Brees, Zack Kass (AI), and Michael Massimino. Education on leadership, technology, and project management.

Why attend: 2,000-5,000 mechanical contracting executives. Five days in Phoenix. Best for companies selling into commercial mechanical and plumbing contractors.

No-Dig Show

Location: Palm Springs, CA

Dates: March 29 - April 2, 2026

Purpose: Training / Certification

Attendee Count: 2,000-5,000

Website: https://nodigshow.com/

No-Dig Show is the North American trenchless technology conference. 2,000-5,000 attendees. Pipe rehabilitation, CIPP, directional drilling, and inspection. Relevant for plumbing contractors in sewer and underground work.

Why attend: 2,000-5,000 trenchless and underground utility professionals. Five days in Palm Springs. Best for companies selling pipe lining, inspection, or rehabilitation products.

Nexstar Network Super Meeting

Location: Aurora, CO

Dates: September 30 - October 3, 2026

Purpose: Growth / Revenue

Attendee Count: 500-1,000

Website: https://www.nexstarnetwork.com/super-meeting/

Nexstar Network Super Meeting brings together home service contractors from plumbing, HVAC, and electrical. 500-1,000 attendees. Education on operations, marketing, and business growth. Peer networking and best-practice sharing for residential service companies.

Why attend: 500-1,000 residential service contractors. Four days near Denver. Best for companies selling software, marketing, or operations tools to plumbing and trades contractors.

Plan your 2026 US plumbing conference strategy

February is packed: WWETT, Design & Construction Week, and Flow Expo USA all land within 4 weeks. March through June is commercial and infrastructure (MCAA, No-Dig, AWWA ACE). Fall clusters service contractor events: ServiceTitan Pantheon, Nexstar, PHCC Connect, and WEFTEC between late September and late October.

Important decisions to make now:

Which customer profile matters most? Residential service vs commercial mechanical, wastewater/septic vs kitchen-bath, new construction vs service/retrofit.

What's your conference strategy? Brand awareness (requires large events like Design & Construction Week, WEFTEC), lead generation (mid-size events like MCAA, AWWA ACE), relationship building (focused events like PHCC Connect, Nexstar Super Meeting).

How many can you attend? Assess budget (booth + travel) and team capacity (who travels, for how many days).

When will you decide? Booth prices increase as events approach. Early bird pricing typically closes 60-90 days before conference. Book now for best rates.

Pre-event outreach, booth strategy, immediate follow-up, and realistic ROI timelines determine conference success.

Plumbing conferences work when combined with good data. Using Orbital's US plumbing contractor database, identify which conference attendees match your ICP, reach out before the event, and book meetings in advance. The companies winning at conferences schedule their entire conference calendar before arriving.

Download the complete US plumbing conference list

Get the full 2026 conference calendar with dates, locations, attendee counts, and strategic recommendations for every major plumbing and trades event.

What's inside: 65+ US events with all dates and locations, trade show vs. association breakdown, exhibitor priority tiers, attendee count comparisons, geographic coverage by US region, pre-event outreach email templates, and post-conference follow-up sequences.

Download the complete list