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.

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): 2025-06-29

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

Geographic Extent: Wales (WLS)

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 )

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

GEMET - INSPIRE themes, version 1.0

Environmental monitoring facilities

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

Water Quality Assessment
water quality monitoring

Type: Theme

Citation

Date (Publication): 2025-01-08

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

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

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

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: 2025-06-30T09:29:14.827Z

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

Access the portal

Full access to the portal and metadata.

NRW Open Water Quality Archive

Identification

Temporal Extent

Extent

Extent

Distribution

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Attribution Statement

Licence

Metadata

Metadata

Publishing Body