Certification of Sanitary Appliances

Kiwa tests and certifies products used in industrial and domestic (drinking) water installations. Products that conform with the requirements are marked with the Kiwa mark.

The Kiwa mark indicates that:

  • The products meet the requirements in relation to safety, suitability and durability;
  • The production process complies with the requirements for quality assurance.


Products that come into contact with drinking water are supplementary tested on hygienic aspects: the effects of products and the materials used in it on the drinking water quality. The requirements for these aspects are set by the Dutch government. If a product also meets these requirements it may bare the Kiwa Water Mark. For more information about the Kiwa Water Mark click here.

The products are tested in our modern, well-equipped laboratory. The certification procedure is efficient and effective. The certification, based upon tests and inspections (of both the products and the production process), is carried out by our own highly qualified employees. For more information about testing of drinking water products, but also products in other markets, click here.

Kiwa Evaluation guidelines

Evaluation of the products is carried out based on Kiwa evaluation guidelines. The guidelines contain requirements with respect to the functionality and durability of the product, as well as requirements with respect to the production process at the location of production. Often, the requirements are based upon European standards.

Evaluation guidelines for products that come into contact with drinking water also include the legal requirements for hygienic aspects.

Products in contact with drinking water

For products used in drinking water installations in most countries of the European Community, such as The Netherlands, Germany, UK and France, a specific separate approval is required when they come into contact with drinking water. Kiwa is appointed by the Dutch Ministry of Infrastructure and the Environment to certify these products in The Netherlands. Therefore, Kiwa is in the unique position to combine the application for certification of functional and process aspects with the application for approval of products in contact with drinking water into a single application procedure.

This way of handling applications underlines the position of Kiwa as a partner for progress and as an establishment for one stop shopping.

Evaluation guidelines

Kiwa evaluation guidelines have been drafted by experts for various groups of products, such as:

  • Gate and butterfly valves;
  • Valves (stop, connecting, service, etc.);
  • Sanitary tap ware;
  • Shower heads and hand showers;
  • Toilet bowls and close coupled suits;
  • Flushing cisterns and float operated valves;
  • Fire hydrants;
  • Fittings;
  • Water meters;
  • Heat exchangers;
  • Backflow preventers.

Overview of products with Kiwa quality declarations

For an complete overview of all products with Kiwa quality declarations visit our website: www.1kiwa.com

Other activities

Kiwa participates in various (inter)national normalization/standards committees. Kiwa shares its knowledge with its relations. Producers with a Kiwa agreement are served with timely and objective information about international developments with respect to their products. Kiwa is proactive in looking for possibilities for co-operation with other international institutes. Kiwa expertise, but most of all the practical approach by Kiwa employees, has resulted in co-operation with several other certification bodies, both inside and outside Europe, such as SAI- Global (Standard Australia Quality Assurance Services), DVGW (Deutscher Verein des Gas- und Wasserfaches e.V.), ÖVGW (Österreichische Vereinigung für das Gas- und Wasserfach), SVGW (Schweizerische Verein des Gas- und Wasserfaches), CSTB/AFNOR (Centre Scientifique et Technique du Bâtiment/Association Française de Normalisation), UL (United Laboratories), and WRAS (Water Regulations Advisory Scheme).