KTW certificate is a well-known certificate in the context of drinking water hygiene and materials in contact with drinking water. It is issued by the German Environmental Agency (Umweltbundesamt, UBA) and guarantees that materials and products used in drinking water systems are safe and do not pose a risk to human health.

Key Points about KTW Certificate:

Purpose: KTW guidelines assess the suitability of materials (e.g. plastics, elastomers, metals, coatings) that come into contact with drinking water. The aim is to prevent contamination and ensure water quality.

Test: Products are tested for:

Transmission of substances into the water (e.g. chemicals, heavy metals).,

Taste and odor changes in the water.

Microbial growth on the surface of the material.

Application: KTW certificate is generally required for:

Pipes, fittings, seals and valves.

Water treatment components.

Plumbing materials.

Regulation: The KTW guidelines are part of the German DVGW (German Technical and Scientific Association for Gas and Water) standards and are widely accepted in Europe.

Global Importance: While KTW certification is primarily a German standard, it is often referenced or required in other countries due to its rigorous testing and reputation for ensuring safety.

If you are interested in obtaining KTW certification for a product or need more specific information about the process, please contact us.