Drikkevandets hårdhed

Hardness of Danish drinking water

Kortet viser drikkevandets hårdhed (dH) i forsyningsområderne for almene vandværker i Danmark, baseret på kvalitetssikrede data udtrukket fra den nationale boringsdatabase (Jupiter) i september 2023. Hårdhedsgraden, som er et udtryk for vandets indhold af calcium og magnesium, har blandt andet betydning for, hvor meget sæbe man skal bruge, når man vasker, da hårdt vand kræver mere sæbe end blødt vand. Der kan være store lokale og tidsmæssige forskelle på hårdheden. Kontakt det lokale vandforsyningsselskab for de mest aktuelle og præcise tal.

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.

Date (Publication) Date (Publication): 2024-09-05

Citation identifier Citation identifier: dk.geus / drikkevands_haardhed

Presentation form Presentation form: Digital map

Digital map

Purpose Purpose: Formålet med dette kort er at illustrere variationen i drikkevandets hårdhed i Danmark baseret på de tilgængelige data fra 2023. Drikkevandets hårdhed er en vigtig teknisk egenskab, da den påvirker udfældning af karbonater i vandrør, kedler og andre husholdningsapparater med varmt vand, samt påvirker sæbeforbruget. Derudover kan dette kort være nyttigt for forskellige myndigheder og industrier.

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 Status: Completed

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
De Nationale Geologiske Undersøgelser for Danmark og Grønland (GEUS) Geological Survey of Denmark and Greenland (GEUS)	GIS-support GIS-support	[email protected] [email protected]	Point of contact Point of contact
De Nationale Geologiske Undersøgelser for Danmark og Grønland (GEUS) Geological Survey of Denmark and Greenland (GEUS)	Birgitte Hansen Birgitte Hansen	[email protected] [email protected]	Custodian Custodian

Maintenance and update frequency Maintenance and update frequency: As needed

As needed

Metadata author

Organisation name	Individual name	Electronic mail address	Role
De Nationale Geologiske Undersøgelser for Danmark og Grønland (GEUS) Geological Survey of Denmark and Greenland (GEUS)	GIS-support GIS-support	[email protected] [email protected]	Point of contact Point of contact

Theme Theme

Datasæt

Dataset
Geologi

Geology
Drikkevand

Drinking water
ArcGIS

ArcGIS

Forskningsemner

Geografisk

Danmark

Denmark

Access constraints Access constraints: Other restrictions

Other restrictions

Use constraints Use constraints: Other restrictions

Other restrictions

Other constraints Other constraints: CC BY 4.0

CC BY 4.0

Spatial representation type Spatial representation type: Vector

Vector

Denominator Denominator: 100000

Language Language: Dansk

Character set Character set: UTF8

UTF8

Topic category Topic category

Geoscientific information

Geoscientific information
Environment

Environment

Supplemental Information Supplemental Information: Ingen angivet

None specified

Reference system identifier Reference system identifier: ETRS 89 / UTM 32N (EPSG:25832)

ETRS 89 / UTM 32N (EPSG:25832)

Distribution format

Name	Version
WMS
REST
WMTS

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
De Nationale Geologiske Undersøgelser for Danmark og Grønland (GEUS) Geological Survey of Denmark and Greenland (GEUS)	GIS-support GIS-support	[email protected] [email protected]	Distributor Distributor

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OnLine resource

Protocol	Linkage	Name
DOI	https://doi.org/10.22008/FK2/5OZV7W	Download Download
WWW:LINK-1.0-http--link	https://data.geus.dk/geusmap/index.jsp?mapname=denmark&lang=da#baslay=&optlay=&extent=152468.15631191875,5968370.043160659,981533.2402930192,6463665.6196479825&layers=drikkevandets_haardhed,openstreetmap_basemap_dk	Interaktivt webkort Interactive webmap
OGC:WMS-1.3.0-http-get-capabilities	https://data.geus.dk/arcgis/services/Denmark/Drikkevandets_haardhed/MapServer/WMSServer?request=GetCapabilities&service=WMS	Drikkevandets_haardhed
ESRI:REST	https://data.geus.dk/arcgis/rest/services/Denmark/Drikkevandets_haardhed/MapServer	Drikkevandets_haardhed Drikkevandets_haardhed
OGC:WMTS-1.0.0-http-get-capabilities	https://data.geus.dk/arcgis/rest/services/Denmark/Drikkevandets_haardhed/MapServer/WMTS/1.0.0/WMTSCapabilities.xml	Denmark_Drikkevandets_haardhed

Hierarchy level Hierarchy level: Dataset

Dataset

Statement Statement: Dette kort er baseret på de nyeste tilgængelige oplysninger om vandets hårdhed i forsyningsområderne for almene vandværker. Metadata om de almene vandværker samt drikkevandsanalyser af Ca, Mg og total hårdhed blev udtrukket fra Jupiter-databasen den 6. september 2023. Vandforsyningsområderne stammer fra Schullehner (2022, https://doi.org/10.34194/geusb.v49.8319). Dataene er blevet kvalitetssikret, filtreret, aggregeret og sammenkædet.

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.

Metadata

File identifier File identifier: 27f53f24-c0b6-4c6a-8e1d-b53071461f74 XML

Metadata language Metadata language: Dansk

Character set Character set: UTF8

UTF8

Hierarchy level Hierarchy level: Dataset

Dataset

Date stamp Date stamp: 2026-08-23T09:26:07.43951Z

Metadata standard name: ISO 19115:2003/19139

Metadata standard version: 1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
De Nationale Geologiske Undersøgelser for Danmark og Grønland (GEUS) The Geological Survey of Denmark and Greenland (GEUS)	GIS-support GIS-support	[email protected] [email protected]	Point of contact Point of contact

Other language

Language	Character encoding
English Engelsk	UTF8 UTF8
Danish Dansk	UTF8 UTF8

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