Our Members


ADA is the membership organisation for water level management (WLM) authorities in the UK and is also the recognised national representative for Internal Drainage Boards (IDBs) in England and Wales.

Established in 1937, today ADA represents over 230 members and associate members at a national and parliamentary level, including Regional Flood & Coastal Committees (RFCCs) as well as contractors, consultants and suppliers to the industry.

Please explore the site to discover more about our members, and if you are interested in becoming a member you can find out how below.

Find your local IDB

Find our members in your area

Discover the benefits of becoming a member