The Source Testing Association (STA) is a non-profit making technical trade association which was established in 1995.
The Water Monitoring Association represents the interests of companies involved in all aspects of water monitoring.The WMA was formed to influence the development of standards, equipment, personnel and applications that affect qualitative and quantitative water monitoring.
Working for the public benefit for a clean, green and sustainable world, CIWEM (The Chartered Institution of Water and Environmental Management) is the only independent, chartered professional body and registered charity with an integrated approach to environmental, social and cultural issues