Harmonisation of materials and products in contact with drinking water in Europe

The European Drinking Water Directive is currently being revised (see below). The description of the current legal situation therefore refers to the currently valid version:

COUNCIL DIRECTIVE 98/83/EC of 3 November 1998 on the quality of water intended for human consumption

Standards for products in contact with drinking water

The European standardisation of products in contact with drinking water has been on the agenda since the 1980s. Today almost all products are already described in common European standards (EN).

However, the important aspect of hygienic suitability for contact with drinking water and the associated requirements are still missing.


Managing Director

Dipl.-Ing. Volker Meyer

+49 221 37668-51

Section Water - Technical officer
Lars Neveling, M.Sc.

+49 221 37668-58

A lack of harmonisation is a barrier to the principle of the free movement of goods.

Regulation (EC) No 764/2008 on the free movement of goods states that "a Member State may not prohibit the sale on its territory of products which are lawfully marketed in another Member State, even where those products were manufactured in accordance with technical rules different from those to which domestic products are subject".

Exceptions to this principle are, however, permitted for issues justified on the basis of overriding reasons of public interest. These include the 'protection of human health and life', which provides each European country with a possible justification for maintaining its own requirements for materials and products in contact with drinking water.

No common hygienic test requirements in Europe

With the Drinking Water Directive (DWD), the EU provides the legal framework for the protection of human health. This also applies to products that come into contact with drinking water.

Article 10 of the Drinking Water Directive requires EU member states to monitor the substances or materials used in contact with drinking water. However, it does not specify how compliance with this obligation is to be achieved nor how the member states are to coordinate implementation among themselves.

The interpretation of the wording of Article 10, which states that

"Member States shall take all measures necessary to ensure that no substances or materials for new installations used in the preparation or distribution of water intended for human consumption or impurities associated with such substances or materials for new installations remain in water intended for human consumption in concentrations higher than is necessary for the purpose of their use and do not, either directly or indirectly, reduce the protection of human health provided for in this Directive (...)",

is left to each member state individually, leading to different requirements and test methods in different markets

High costs for hygienic testing of materials and products

The lack of common hygienic testing requirements in Europe for materials and products in contact with drinking water is inefficient and expensive. 

The costs of the non-harmonisation have a particular impact on innovation and competitiveness. The introduction of new products is slowing down and the financial burden for small and medium-sized enterprises is extremely high.

In order to provide concrete statistics, figawa carried out a membership survey and prepared a study based on the results. This study shows, among other things, that 43% of hygiene tests for a single product in Germany take 7 - 12 months. This period is even longer if the tests have to be carried out again in other EU member states, because there is no mutual recognition of tests.

These results have been incorporated into the study „Support to the implementation and further development of the Drinking Water Directive (98/83/EC): Study on materials in contact with drinking water“ commissioned by the EU Commission. 

The costs for the hygienic testing of a pipe system (pipe and fitting) alone in 4 European countries add up to up to 30,000 Euro. The European external testing costs for national product testing are estimated at 100 million Euro per year, without adding the internal costs of the manufacturers. Overall, it is estimated that the annual cost of testing and certification or approval in Europe is EUR 282 million.

Initiatives to address the lack of harmonisation

In 2011, the EU Commission issued a mandate (M/136) to the EU standardisation bodies (CEN/CENELEC) to establish common European standards at least for construction products in contact with drinking water. In 2015, the EU Commission decided to withdraw the mandate despite all efforts of the responsible CEN bodies. It was not considered possible to draw up complete standards in accordance with this mandate.

At the same time, the member states France, the Netherlands, the United Kingdom and Germany agreed to develop a joint voluntary common approach for the testing and evaluation of materials and products in contact with drinking water. This initiative is known as "4 MS".
→ Information on the 4MS-Initiative

Foundation of the "European Drinking Water" Industry Alliance

To support the 4MS work, an alliance of European industrial associations was founded in 2015 under the name "European Drinking Water" (EDW) under the leadership of the figawa project "One standard, one test, accepted everywhere in Eruope", which has been running since 2014.

The member associations represent manufacturers and suppliers of products in contact with drinking water. This includes, for example, pumps, pipes, valves, taps, fittings, water treatment, water heaters, catering equipment industry, seals, etc. and all types of materials such as elastomers, metals, plastics, etc. 

The aim of the initiative:
→ An an EU harmonized scheme for requirements and conformity assessment of products and materials that are used in drinking water applications, which will be accepted in all EU Member States.

This goal has already been stated in several Position papers and contributed to the work of the EU Commission and the EU Parliament.

The key demands of EDW are:

EU legislation should

  • enable the EU institutions to take legally binding measures to further harmonise the hygiene requirements for materials and products in contact with drinking water, including the gradual development of an EU-wide list of substances used for the production of materials in contact with drinking water.

    This approach would ensure that the same safety standards apply to all European consumers and ensure that all products, whether or not they fall within the scope of the CPR, are covered by harmonised hygienic regulations.
  • ensure that the ultimate objective of EU drinking water policy is the development of a fully harmonised regulatory framework for materials and products in contact with drinking water. The Commission is invited to assess progress in harmonising hygiene rules for drinking water applications and to take appropriate measures such as a proposal for a new Regulation.
  • ensure coherence between the Drinking Water Directive and the Construction Products Regulation (CPR). This requires that the harmonised standards developed under the CPR provide a reference to the legally binding measures developed by the Commission under the DWD. This would allow products that come into contact with drinking water and meet the EU-wide hygiene requirements of the DWD to be marketed throughout the EU.
  • close a loophole in the harmonisation process. To achieve this, the Drinking Water Directive should enable and strongly encourage Member States to apply the European harmonised standards to products not only covered by the CPR for drinking water purposes.

Revision of the EU Drinking Water Directive offers opportunity for harmonisation

Through the intensive work at European and national level, a milestone was reached in 2018 towards harmonising the hygienic requirements for materials and products in contact with drinking water.

Based on the financing of the project-supporting companies and partner associations of the figawa project in recent years and the bundling of the industry in the European industrial initiative "European Drinking Water", the EU Commission was persuaded to consider the harmonisation of the hygienic requirements for materials and products in contact with drinking water in the draft of the new EU Drinking Water Directive.

And this despite the fact that in the first draft of the new EU Drinking Water Directive of 1 February 2018, Article 10 was merely deleted without specifying the questions relating to materials and products in contact with drinking water. This indicated that the hygienic requirements should be defined within the framework of the Construction Products Regulation (CPR). However, this would have meant that not all the products concerned would be regulated, as some products, such as drinking water heaters, water meters, pumps and household appliances, are not covered by the CPR.

But in the first reading of the European Parliament in October 2018, the following points were introduced by the EU Parliament in addition to the Commission's draft:

  • New Article 10a laying down minimum hygiene requirements for products, substances and materials.
  • Substances and materials in contact with drinking water must not endanger human health, impair the smell and taste of drinking water, promote microbiological growth and not be present in higher concentrations in drinking water than absolutely necessary for their purpose.
  • The EU Commission is called upon to adopt delegated acts within the framework of the Drinking Water Directive to establish minimum hygiene requirements and positive lists of substances from which materials in contact with drinking water are produced.
  • Clause to verify whether a sufficient degree of harmonisation has been achieved.

Parliament's position on materials and products in contact with drinking water constitutes a significant improvement on the Commission's draft.

In the Consultations of the Council of the EU in March 2019, the proposals of the EU Parliament were taken up and substantiated:

  • To ensure uniform application, specific minimum hygiene requirements for materials are now to be regulated by implementing legislation. These include the creation of regularly reviewed and updated European positive lists as well as common test and selection procedures for
    • End materials manufactured from these substances whose test methods are based on EN standards 
    • Substances which are listed on the European positive lists (specific for the respective material group) and which are approved for the production of materials, and
  • All products in contact with drinking water (harmonised and non-harmonised) must comply with the requirements of the Drinking Water Directive. In order to facilitate uniform verification, the EU Commission may mandate the development of a corresponding standard.
  • The establishment of a labelling system for products complying with the requirements will also be regulated by an implementing act.

Trilogue negotiations

It can be assumed that the subsequent trilogue negotiations between the EU institutions (EU Parliament, Council and Commission) will reach an agreement by spring 2020.