Databases of Stichting National Environmental Database
Stichting Dutch Environmental Database manages two databases that together form the basis for calculating the environmental performance of construction works. On this page, you will find an overview of these databases and their function within the system.
The Dutch Environmental Database contains environmental data used for environmental performance calculations of construction works. In addition, there is a process database containing processes used in the preparation of LCAs and environmental declarations, and via the NMD Viewer you can view published environmental declarations.
On this page you can read what the databases contain, how the classification works (category 1, 2 and 3) and where to go if you want to use, verify or register data.
The databases of Stichting National Environmental Database
The Dutch Environmental Database consists of multiple databases, each with its own role in recording and making environmental data accessible. Together they determine how environmental data is recorded, structured and made available.
Would you like to understand how these databases relate to each other and where to find which information? Or would you like to view environmental declarations via the NMD Viewer?
Below you will find the main entry points.
Dutch Environmental Database
Curious how the National Environmental Database works and what you can do with it? Read on and discover how this data source contributes to sustainable construction
Process database
The NMD process database provides environmental data on construction processes and semi-finished products for LCAs. Learn more about how this supports environmental performance assessments.
The relationship between the NMD databases
Read how the Dutch Environmental Database and the process database are related and what the main differences are.
Viewer
With the NMD Viewer you can quickly and easily consult environmental data of construction products. Try it yourself and discover what is in the Dutch Environmental Database.
Access, structure and use
Environmental declarations form the basis of the data in the Dutch Environmental Database. They are structured according to fixed principles, so that they can be applied and interpreted consistently.
Would you like to understand how environmental declarations are classified and what information they contain? Choose below what you would like to know more about.
Categories of environmental declarations in the Dutch Environmental Database
Read about the difference between category 1, 2 and 3 environmental declarations and what this means for the content and use of data.
Functional descriptions
Functional descriptions ensure consistency in the NMD by describing products and processes in a uniform way. Read more about how this works and why it matters.
Information for data users
The data from the NMD is used by a wide range of stakeholders in the construction sector for reliable environmental performance assessments. Read on to discover how they apply the data.
Featured category 1 environmental declaration
Read how data owners experience a category 1 environmental declaration in practice and what considerations play a role.
Getting started with environmental data in the Dutch Environmental Database
Discover what environmental data in the Dutch Environmental Database means in practice, how it is applied and how you can contribute to its improvement.
Why a category 1 or 2 product card in the NMD?
Category 1 and 2 environmental declarations provide up-to-date, product- and brand-specific data in the NMD. Read why these declarations are essential for reliable environmental performance assessments.
Filling the Gaps Compensation Scheme
The Filling the Gaps Compensation Scheme maps missing environmental data in the NMD and works on targeted additions. Read more about the approach and objectives.
Feedback on the assessment method or data
User feedback helps the NMD continuously improve the database and better align it with practice. Read how you can provide feedback and what happens with it.
Frequently asked questions about the database
Questions about the NMD database? Check out the frequently asked questions for clear answers and practical explanations.
Frequently asked questions about the Database
Stichting NMD manages both the National Environmental Database (NMD) as well as the NMD Process Database. The NMD is a database filled with environmental declarations. This is the database that is used by the calculation tools to produce ECI and EPD calculations. The NMD Process Database is used as source (to draw up LCAs) for the data included in the environmental declarations in the NMD.
The environmental declarations and basic profiles should be reviewed for timeliness from time to time and then updated as necessary. The same shelf life applies to both with a periodic expiration date of 5 years. After this period, environmental declarations and basic profiles must be updated. This can also be done in the interim, for example after changes in the production process that affect environmental performance. Data owners can have their data changed by submitting a new template.
A background process is a process that affects a producer's or supplier's product, but over which the producer or supplier has no direct influence and which occurs elsewhere in the chain; for example, production of electricity or a raw material.
