Country: United Kingdom

ATTMA, Air Tightness Testing and Measurement Association
Tannery Road, High Wycombe, , , HP13 7EQ
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The Air Tightness Testing and Measurement Association (ATTMA) is a professional association dedicated to promoting technical excellence and commercial effectiveness in all air tightness testing in buildings and air leakage measurement applications.

IWA International Water Association
Alliance House, 12 Caxton Street, , , SW1H 0QS
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The International Water Association (IWA) is the global network of 10,000 water professionals spanning the continuum between research and practice and covering all facets of the water cycle.