NRW Open Water Quality Archive

NRW’s water quality archive provides data from samples collected around Wales, including coastal, estuary, rivers, lakes, ponds, canals, sewage discharges, trade discharges, pollution investigation points and waste sites.


NRW holds data goes back to 1962 whereas the open data product contains data from 2000 onwards. The open data product is extracted from NRW’s Water Quality database (KiWQM) and updated every month.


Some field measurements are taken in situ at the sampling station, whereas some samples are analysed in laboratories to measure aspects of the water quality. Once samples are taken, they must be processed and verified before they are added to the water quality archive. Therefore, there is a delay between samples being taken and the data being made available. Data may also be subject to change after publication, but the archive will be updated each month to include corrections.

Identification

Identifier
NRW_DS124903
Metadata Language
English
Lineage

NRW's water quality archive is a large dataset containing some potentially sensitive data and therefore some information has been redacted. The main sensitivities are around groundwaters, potable water supplies, 3rd party data and formal investigation samples. Information Warnings about the quality of the data are flagged against the specific rows within the datasets.
Additional Information

For additional help please see our FAQs here: https://naturalresourceswales.sharefile.eu/share/view/s08e447c637cd47549592d271873d8466/fob796e4-390d-4158-8d9a-8feddc72ae34

Dataset Reference Date (Publication)
2026-10-18

Temporal Extent

Begin date
1962-01-01
 
Topic category
  • Inland waters
  • Environment
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Originator
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 

Extent

Extent

Geographic Extent
Wales (WLS)
N
W
E
S
Map representing the geographic extent of the dataset


 
 

Distribution

Distribution

Format Type and Description
  • Delimited ( )

    Specification

    Data Held in wiski database but export to CSV for the data product

Resource Locator
Data Download ( WWW:LINK-1.0-http--link )
 

Quality

Data quality

Quality Scope
Dataset
Conformity
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

NRW's water quality archive is a large dataset containing some potentially sensitive data and therefore some information has been redacted. The main sensitivities are around groundwaters, potable water supplies, 3rd party data and formal investigation samples. Information Warnings about the quality of the data are flagged against the specific rows within the datasets.
 

Keywords

Keywords

GEMET - INSPIRE themes, version 1.0
Type
Theme

Citation

Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus
  • water quality monitoring
  • Water Quality Assessment
Type
Theme

Citation

Date (Publication)
2026-08-27
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

IPSV Subjects List
  • Water quality
Type
Theme

Citation

Date (Publication)
2020-11-18
Code
geonetwork.thesaurus.external.theme.subjects

Keywords

NRW SMNR Keywords
  • Water Quality (SMNR)
Type
Theme

Citation

Date (Publication)
2024-06-26
Code
geonetwork.thesaurus.local.theme.converted_nrw-smnr-keywords
 

Spatial Reference System

Code
British National Grid (EPSG::27700)
 

Content

Content Information

NRW Profile

Custom Elements

 

Constraints

Constraints

Limitations on Public Access and Use

Restriction type
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Use constraints type
Other restrictions
Other constraints

© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
 

Attribution Statement

Other constraints

Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.
 

Licence

Other constraints
Open Government Licence
 
 
 

Metadata

Metadata

File Identifier
4f4c4942-4343-5764-6473-313234393033 XML
Metadata Language
English
Parent Identifier
Natural Resources Wales (NRW) Water Quality Data Archive held in WISKI (KiWQM)

NRW_DS119251
Resource type
Dataset
Metadata Date
2026-10-19T15:12:10.692Z
Metadata Standard Name
NRW
Metadata Standard Version

1.0

pointOfContact
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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