NRA records another decline in top quality rivers

A further decline in the proportion of English and Welsh rivers falling within the top quality class was recorded in 1991/2, according to the latest annual report of the National Rivers Authority (NRA).1 The number of water pollution incidents also increased - but serious incidents declined.

The last full survey of surface water quality showed that a net decline had occurred between 1985 and 1990, continuing a trend initiated at the beginning of the 1980s (ENDS Report 201, p 6).

The NRA's annual report shows that the proportion of river lengths falling in the top quality class again fell in 1991/2. However, the length of the dirtiest class 4 rivers also declined.

The report suggests that the NRA's efforts to increase

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