The Ontario Water Sewer & Watermain Construction Association offers a plethora of programs and events designed to uplift the industry and individuals that service Ontario's water systems.

Industry Promotion

Build positive working relationships with politicians and bureaucrats at all levels of government. A strong steady voice in order to adequately address policy decisions, regulations and legislation affecting our industry.


Encourage educators and students to seek out careers in the sewer and watermain industry through annual scholarship programs, bursaries and through OCCI. Offer the Canadian Construction Association's Gold Seal Certification program.

Industry Relations

Liaise with other construction associations on matters of mutual concern.

Industry Trends and Awareness

Keep members informed of relevant proposed legislation and regulatory changes affecting our industry.

Theft Prevention

Disseminate information to our members and recommend risk management and equipment/material theft prevention measures. Through our theft prevention consultant, liaise with police enforcement agencies regarding equipment theft.


Host special events and activities designed to provide networking opportunities for our members. Represent our industry at conferences and political events and bring a unified voice to working groups and round tables.


Working closely with WSIB and other agencies to support, foster and promote safe workplace practices, maximize savings to our members and develop safety procedures.




To join the OSWCA as an Associate or Contractor member, please select from the list below the local Association within your area and contact them directly to obtain further membership information.  

As a member of any one of these local associations, your company will automatically become a member of the OSWCA.  


Conestoga Heavy Construction Association
25 Sheldon Dr., Cambridge, ON N1R 6R8
Tel: 519-638-3077, Fax: 519-638-2550

Durham Region Heavy Contractors Association
270 Monarch Avenue - Unit 1, Ajax ON L1S 2G6
Tel: 905-686-7227

Greater Toronto Sewer & Watermain Contractors Association
5045 Orbitor Dr., Unit 12, Ste 300, Mississauga, ON L4W 4Y4
Tel:  905-629-7766   Fax: 905-629-0587 

Hamilton & District Heavy Construction Association (HAND)
370 York Blvd., Unit 104, Hamilton, ON  L8R 3L1
Tel: 905-524-3762  Fax:  905-524-5621 

London & District Heavy Construction Association
11 Haymarket Place, London, ON  N6C 3C9
Tel:  519-681-1158   Fax:  519-690-2261


Kingston Construction Association - Heavy Contractors Division
1575 John Counter Blvd., Kingston, ON  K7M 3L5
Tel: 613-542-9431  Fax:  613-542-2417 

National Capital Heavy Construction Association
PO Box 77, Greely, ON  K4P 1N4
Tel:  613-821-5940  Fax:  613-821-5941 

Sarnia Heavy Construction Association
PO Box 502, Sarnia, ON  N7T 7J4
Tel: 519-344-7422  Fax:  5169-344-3868

Heavy Construction Association of Regional Niagara
PO Box 23, Thorold, ON  L2V 3Y7

Simcoe County Heavy Construction Association
PO Box 63, Barrie, ON  L4M 4S9
Tel: 705-726-6424   Fax:  705-726-6364

For further information regarding membership, please contact Linh Tu, Office Coordinator, at 905-629-7766, ext.221 or