Serving the Plumbing and Pipefitting Industries of Northeast Wisconsin



Main Office

2700 Northridge Drive
P.O. Box 530
Kaukauna, WI  54130

(920) 462-0400 or 1-800-239-1552 (WI only)
Fax: (920) 462-0430

Office Hours:
8:00am – 4:30pm Monday – Friday


Fond du Lac Office

460 W. 11th Street
Fond du Lac, WI 54935

(920) 921-6490 or 1-877-921-6490 (WI Only)
Fax: (920) 921-1984

Jurisdiction Counties: Adams, Brown, Calumet, Dodge, Door, Fond du Lac, Green Lake, Kewaunee, Manitowoc, Marinette, Menominee, Oconto, Outagamie, Shawano, Sheboygan, Waupaca, Waushara, and Winnebago.

Plumbers & Steamfitters UA Local 400 is proudly associated with the following organizations:
logo_UA        logo_WPT        logo_MCA        logo_PFI

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Connect With Us

  • Please remember to RSVP for the Fraternal 400 Awards Reception on Saturday, May 17th. Details were on the back page of the newsletter that was out last week. We need the RSVPs no later than next Friday, May 2nd.