Kiwa is an independent international organization issuing highly qualified certification. These certification activities support Kiwa with inspections, certification, testing, technological knowledge, research, training and data services. Kiwa is the market leader in the (drinking) water, gas and construction sector, industry, business services and health and safety.

The Kiwa Watermark may be carried by certificate holders for and on products in contact with drinking water, and meet all requirements on Kiwa-assessment directives (BRL-s).