Skip main navigation
N Mark for sanitary tapware
AENOR N Mark of quality for sanitary plumbing

N Mark for sanitary tapware

N Mark for sanitary tapware

The AENOR Mark for sanitary plumbing certifies the compliance of these products with Spanish and European standards, as well as with AENOR regulations

The AENOR Mark for sanitary plumbing is an alternative to Royal Decree 358/1985 on the approval of sanitary plumbing

The N Mark for sanitary tapware covers the following products:

  • Conventional sanitary plumbing UNE 19703
  • Single and mixed taps (PN 10) UNE-EN 200
  • Self-closing taps PN 10 UNE-EN 816
  • Mechanical mixing taps (PN 10) UNE-EN 817
  • Thermostatic mixing taps (PN 10) UNE-EN 1111
  • General specifications for flow regulators UNE-EN 246

As a compliance assessor, AENOR is a leading product certification entity. With over 100,000 certifications, the AENOR N Mark is present in over 40 countries and is in the top five most widely used product quality marks in the world.

The AENOR N Mark is a voluntary logo that enables a company to demonstrate that their product complies with the specific provision of a UNE, EN or ISO standard, or a technical specification. This display of conformity is based on rigorous monitoring of manufacturing processes and testing of end products carried out by AENOR, and enables holders of the N Mark to place their high-quality certified products on the market and to instil confidence in customers.

Royal Decree 314/2006, of 17 March, approving the Technical Building Code (CTE), is the regulatory framework that establishes the requirements that must be met by buildings in terms of basic safety and habitability aspects, established in Act 38/1999 of 5 November, on Building Standards (LOE).

The AENOR N Mark is recognised by the Ministry of Public Works and Transport as a CTE quality symbol. This recognition means that the Administration is sufficiently confident in the products certified under the AENOR N Mark considering that the use of these products in buildings contributes to compliance with the basic requirements set forth in legislation. For this reason, use of AENOR N Mark products benefits all agents involved in constructing a building.

This way, the AENOR N Mark provides the following advantages:

The manufacturer

  • Better understanding of a product due to the exhaustive control the AENOR Mark establishes with respect to the same
  • Products that do not comply with relevant standards or regulations can be detected before they enter the market
  • Decreases production costs as a result of greater control during the manufacturing process
  • There are commercial grounds to introduce the product into new markets and facilitate access to works

Business providers and monitoring agents

  • Fewer or no checks upon delivery are required for goods provided for by the CTE
  • Ensures that products used in works comply with applicable regulatory requirements
  • Guarantee that the product has previously been verified in order to determine compliance with the minimum requirements of basic CTE documents

The end user

  • Properties are built using materials of proven quality
  • Product certified by a renowned organisation and global leader in the certification of construction products.

>Royal Decree 358/1985, of 23 January, which establishes the adherence of sanitary plumbing to technical standards, for use in personal hygiene facilities, kitchens and laundry rooms, and their approval by the Ministry of Industry and Energy, establishing the required compliance with technical standards on sanitary plumbing.

The certification of conformity with standards established by the AENOR Mark for sanitary tapware has the same value as the certification. It is an alternative recognised by the Ministry of Industry, Energy and Tourism.


The AENOR Mark is voluntary. Companies that want AENOR to certify their product must submit their application in accordance with the formats established by AENOR. This application must include information about the company and the characteristics of the products for which certification is sought.

Once AENOR technical staff have analysed the documents, compliance assessment activities will be performed in order to verify that the products comply with the applicable standards:


A visit is made to the production centre to carry out the following procedures:

    • ​​a) The quality management system is audited according to the requirements of UNE-EN ISO 9001 directly related to the production process.
    • b) The manufacturer's manufacturing process and production controls are inspected to ensure the product complies with the requirements of the standard.
    • c) Samples are taken and sent to an accredited laboratory, which performs the tests included in the standards. The manufacturer sends samples identified by the auditor to the laboratory.


The laboratory performs the tests established by the standard and sends its report to AENOR.


With all the information about the activities carried out, the Technical Certification Committee (an independent body formed by all the stakeholders: manufacturers, the Administration, users, monitoring entities and AENOR) will either propose to AENOR that the Mark be granted, or request that one of the activities be repeated due to non-compliance.

Once the Certificate has been granted, the process will continue as the monitoring activities required to keep it must be performed. Samples will be taken, and audits, inspections and tests will be performed on an annual basis. The results are assessed every year by the Technical Certification Committee which decides whether to maintain or remove the Mark.

Once the certification process has been successfully completed, the organisation obtains:

  • AENOR product certificate
  • User licence for the AEN​​OR ​Mark of a certified product, in accordance with the provisions of AENOR regulations
AENOR N Mark logo for a certified product​​​​​​

Certified product specifications: Sheet on the AENOR N Mark for sanitary plumbingN Mark for sanitary tapware

GlobalEPD Declarations

Environmental product declarations (EPD)

​​​​AENOR manages the GlobalEPD Programme of verification, in accordance with Standards ISO 14025 and ​EN 15804