Historic UK Water Quality Sampling Harmonised Monitoring Scheme Detailed Data

PLEASE NOTE: This dataset has now been retired. The Harmonised Monitoring Scheme (HMS) was decommissioned in 2013, this is the final year that the dataset was produced. Water quality measurements for monitoring sites in England are available from the Water Quality Archive, dating from 2000: https://environment.data.gov.uk/dataset/2499766e-b15a-4f85-a758-5702de693723 This record is for Approval for Access product AfA255. The Historic UK Water Quality Sampling Harmonised Monitoring Scheme (HMS) dataset contains individual determinand results for all sites in the UK Harmonised Monitoring Scheme network from 1974 onwards. 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. 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. The summary dataset is covered in AfA178 Historic UK Water Quality Sampling Harmonised Monitoring Scheme summary data. Attribution statement: © Environment Agency copyright and/or database right 2015. All rights reserved © Scottish Environmental Protection Agency 2015 © Northern Ireland Agri-Food and Biosciences Institute 2015 © Natural Resources Wales 2015