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Title: Water quality report 1992
Author: National Rivers Authority Anglian Region
Document Type: Monograph
Annotation: EA additional title info: water quality report 1992
The National Rivers Authority is a public body, charged with the duty of improving the Water Environment. The NRA operates through a Board and National Head Office. Anglian Region is one of eight Regional Units. We report trends over the past 8 years in the chemical quality of rivers. We demonstrate an upgrade of 5.6 per cent since last year. This is matched by an improvement in the biological quality of rivers. The biological quality is the best we have recorded. We provide evidence that the improvements in river quality are due to a combination of better effluent quality and increased river flows since the end of the drought. Despite these improvements, the number of Pollution Incidents increased by 12 per cent from 1991 to 1992. This resulted from more effective monitoring on our part and growing public awareness. A few sites failed criteria for the Dangerous Substances Directive. As in 1991, recreation was disrupted at some lakes and reservoirs by Blue green Algae. We report trends in the quality of Bathing Waters since 1987. In 1992, two Waters failed of the 33 Identified under the Bathing Waters Directive. This is the best result we have seen. We give trends for the performance of discharges since 1982. 98.4 per cent of the sewage treatment works operated by Anglian Water Services complied with their Consents. This is the highest ever recorded and an improvement of 2 per cent since 1991. Other types of discharges also show the best compliance ever recorded. The number of enquiries of the Water Act Register has increased steadily since it opened in 1985. There were over 640 in 1992, an increase of 32 per cent since 1991. In 1992, the number of samples analysed for routine audit purposes increased to 39,000. We used River Quality Indices and the Laboratory Information Management System to ensure efficient use of our monitoring resources. We continued to plan the measures needed to achieve future Water Quality Objectives. To this end we have completed further mathematical models of rivers, estuaries and coastal waters.
Publisher: National Rivers Authority
Publication Date: 1992
Publication Place: Peterborough
Subject Keywords: Annual reportsWater qualitySewageWater pollutionRivers
Geographic Keywords: EA Anglian
Extent: 61
Total file downloads: 289

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