Environment Agency: www.gov.uk/government/organisations/environment-agency
Some factual information about river quality and pollution incidents, though little prosecution and sentencing data. Guidance on permitting and water though focused on permit holders (see also links to Ch 14). For Scotland and Northern Ireland go to the devolved counterpart agencies and bodies (see links to Chapter 4 above).
DEFRA: https://www.gov.uk/government/organisations/department-for-environment-food-rural-affairs
Together with its devolved counterparts (see links to Chapter 4 above) holds useful information, especially on current policy reforms and on the implementation of EU directives, of which the ongoing implementation of the Water Framework Directive is central. See e.g. https://www.gov.uk/government/policies/improving-water-quality
Ofwat: www.ofwat.gov.uk
Financing and economic regulation of the water supply and sewerage industries.
Drinking Water Inspectorate: www.dwi.gov.uk
Regulating the quality of the water supply.
EU water quality law and policy: http://ec.europa.eu/environment/water/index_en.htm
Covers all EU water directives (from the drop down menu on the left hand side of this page)..
OSPAR Convention: www.ospar.org
Text of the Convention and its Annexes, which are developing an increasingly ecosystem-based approach
International Tribunal for the Law of the Sea www.itlos.org
Information in particular on the MOX plant dispute between Ireland and the UK.