Hardness of Danish drinking water

Map showing information about drinking water hardness (dH) at the level of water supply areas of public waterworks in Denmark based on quality-assured data, extracted from the national well-database Jupiter in September 2023. The hardness degree is based on the concentration of calcium and magnesium in the drinking water and has importance, for example, for the soap dosage when washing clothes: hard water requires more soap than soft water. Drinking water hardness may vary considerably from location to location and in time. Contact your water utility company to get the updated and precise figures.

Simple

Date ( Publication )
2024-09-05
Identifier
dk.geus / drikkevands_haardhed
Presentation form
Digital map
Purpose
The purpose of this map is to show the variation of drinking water (DW) hardness in Denmark based on the data available in 2023. DW hardness is an important technical characteristic of tap water in relation to precipitation of carbonates in water pipes, boilers and other hot water household appliances, as well as in relation to increased soap use. The data have also potential relevance to different authorities and industries.
Status
Completed
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support ( )
Custodian
  The Geological Survey of Denmark and Greenland (GEUS) - Birgitte Hansen
Maintenance and update frequency
As needed
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support
Keywords ( Theme )
  • Dataset
  • Geology
  • Drinking water
  • ArcGIS
  • QGIS
Forskningsemner Forskningsemner ( Theme )
Geografisk Geografisk ( Place )
Access constraints
Other restrictions
Use constraints
Other restrictions
Other constraints
CC BY 4.0
Spatial representation type
Vector
Denominator
100000
Metadata language
Da
Character set
UTF8
Topic category
  • Geoscientific information
  • Environment
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Supplemental Information
None specified
Reference system identifier
ETRS 89 / UTM 32N (EPSG:25832)
Distribution format
  • WMS ( )

  • REST ( )

  • WMTS ( )

Distributor
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support
OnLine resource
Download ( DOI )

Download dataset from GEUS' Dataverse

OnLine resource
Interactive webmap ( WWW:LINK-1.0-http--link )

Viewing the dataset on the web portal

OnLine resource
Drikkevandets_haardhed ( OGC:WMS-1.3.0-http-get-capabilities )

ArcGIS WMS Service

OnLine resource
Drikkevandets_haardhed ( ESRI:REST )

ArcGIS REST Service

OnLine resource
Denmark_Drikkevandets_haardhed ( OGC:WMTS-1.0.0-http-get-capabilities )

ArcGIS WMTS Service

Hierarchy level
Dataset
Statement
The map is based on the latest available hardness information at the water supply areas of public waterworks. The public waterworks metadata and drinking water analyses of Ca, Mg and total hardness were extracted from the Jupiter database on 6 September 2023. The water supply areas are from Schullehner (2022, https://doi.org/10.34194/geusb.v49.8319 ). Data were quality assured, filtered, aggregated and linked together.
File identifier
27f53f24-c0b6-4c6a-8e1d-b53071461f74 XML
Metadata language
Danskda
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2026-02-05T09:17:42.494688Z
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support ( )
 
 

Overviews

overview

Spatial extent

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Keywords

ArcGIS Dataset Drinking water Geology QGIS
Forskningsemner
Quaternary geology Soils and biogeochemistry

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Associated resources

Not available