Following a consultation that ended on 28th February 2013, UKTAG has finalised its recommendations on 1) biological standards for rivers, lakes, coastal and estuaries and 2) phosphorus standards for rivers.
Setting appropriate environmental standards for metals is particularly challenging because the proportion of metal in the water environment that is bound up in forms that do not pose a risk of toxic effects on water animals and plants varies.
The UK Technical Advisory Group (UKTAG) has commissioned a programme of work to derive Environmental Quality Standards (EQSs) for substances falling under Annex VIII of the Water Framework Directive (WFD).
The assessment of compliance of surface waters with environmental quality standards (EQSs) for metals has to deal with a number of issues that do not apply to other substances.
A Manganese Bioavailability Tool has been developed that simplifies the integrated Biotic Ligand Model but runs in MS Excel. It requires data input for site-specific dissolved organic carbon, pH and calcium.
A Copper Bioavailability Tool has been developed that simplifies the integrated Biotic Ligand Model but runs in MS Excel.
This report provides estimates of ambient background concentrations (ABCs) for several metals and one metalloid in UK freshwaters.
The environmental standards for lake levels were developed from work undertaken by SNIFFER project WFD48. A variation from the natural lake level regime has a number of ecological implications.These impacts include alterations to the underwater light climate and changes to the spatial distributio
This report on the classification of surface waters is one of a series of reports by UKTAG to the UK administrations setting out UKTAG's recommendations and proposals on how waters should be classified for the purposes of the Water Framework Directive.
A technical report on proposals for a first set of standards and conditions was published for review in 2006. The revised report was issued in August 2006 in the form of a recommendation to the UK governments. The UKTAG updated the report in November 2007.