Identification

Title

UK Water Quality Sampling Harmonised Monitoring Scheme Summary Data

Alternative title(s)

AfA178 UK Water Quality Sampling Harmonised Monitoring Scheme Summary Data

Crynodeb o Ddata Cynllun Monitro Wedi’i Gysoni Samplu Ansawdd Dŵr y DU

Abstract

The Historic UK Water Quality Sampling Harmonised Monitoring Scheme (HMS) data contains statistics for a series of water quality sampling sites including annual means, maximum and minimum values for each region for specified determinands from 1975 onwards. The Harmonised Monitoring Scheme (HMS) was established to provide an archive of water quality data for the UK. It is used to provide information for international obligations, including the long-term trends of some determinands and the estimation of riverborne input of selected determinands to the sea.

Resource type

dataset

Resource locator

https://datamap.gov.wales/documents/2634

name: Download Data

Unique resource identifier

code

116328

codeSpace

https://naturalresources.wales

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

environment

Keywords

Keyword set

keyword value

Environmental monitoring facilities

originating controlled vocabulary

title

reference date

date type

publication

effective date

2023-06-14

Geographic location

West bounding longitude

-5.77774100

East bounding longitude

-2.60886500

North bounding latitude

53.51306700

South bounding latitude

51.24082900

Extent

Extent group

authority code

title

reference date

date type

publication

effective date

2023-06-14

code identifying the extent

Great Britain (GBN)

Temporal reference

Temporal extent

Begin position

1975-01-01

End position

2012-12-31

Dataset reference date

date type

publication

effective date

2016-10-25

Frequency of update

notPlanned

Quality and validity

Lineage

The sampling network includes 230 sites, which are mainly located at the tidal limits of major rivers or at the points of confluence of significant tributaries. The information held within the HMS includes data on: Oxygen and ammonia, Nutrients, List II metals and Pesticides. Annual mean concentrations have been calculated for each HMS site. The data show the annual averages of the site means in each region, with each site given equal weight irrespective of the number of samples taken - an average of all the samples would give a greater weight to the sites at which samples are most frequently taken. In order to give an indication of the range of values at different sites within each region, figures are also given for the maximum and minimum site mean for each r egion. The data also includes for the UK average, the 10th percentile and the 90th percentile of the site means for the whole of the UK. For each determinand in each year and the 10-percentile and the 90-percentile of the site means in each region. The Environment Agency also hold and publish a copy of this dataset.

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use 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: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.

Constraint set

Limitations on public access

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

Responsible organisations

Responsible party

organisation name

Natural Resources Wales (NRW)

telephone number

0300 065 3000

email address

enquiries@naturalresourceswales.gov.uk

responsible party role

owner

Responsible party

organisation name

Environment Agency (EA)

telephone number

08708 506 506

email address

enquiries@environment-agency.gov.uk

responsible party role

originator

Responsible party

organisation name

Natural Resources Wales (NRW)

telephone number

0300 065 3000

email address

enquiries@naturalresourceswales.gov.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

organisation name

Natural Resources Wales (NRW)

telephone number

0300 065 3000

email address

enquiries@naturalresourceswales.gov.uk

responsible party role

pointOfContact

Metadata date

2023-06-13

Metadata language