UA 527Welcome to UA Local 527 Southwestern Ontario. The United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada or 'UA' as it is commonly known is a multi-craft union whose members are engaged in the fabrication, installation and servicing of piping systems. There are approximately 326,000 highly-skilled United Association members who belong to over 300 individual local unions across North America. Founded in 1889, the United Association is one of the most respected and influential building trades unions in the U. S. and Canada today. It serves as a collective voice for workers through negotiation and collective bargaining with employing contractor groups, such as the Mechanical Contractors Association of America, and the National Association of Plumbing-Heating-Cooling Contractors. The UA is also a key member of the Building and Construction Trades Department, the AFL-CIO, and the Canadian Federation of Labour. The United Association has been training qualified pipe tradesmen longer than anyone else in the industry more... See more text