THE CHART BELOW SHOWS THE PERCENTAGE OF RIVER WATER QUALITY IN UK RIVERS THAT IS CLASSIFIED AS HAVING GOOD CHEMICAL QUALITY BETWEEN 1990 AND 2002.

THE PROVIDED CHART COMPARES THE PERCENTAGE OF THE SYNTHETIC QUALITY OF RIVER WATER IN PARTS OF THE UK FROM 1990 TO 2002 .

OVERALL

, IT CAN BE SEEN THAT THE PERCENTAGE OF RIVER WATER IN WALES AND NORTHERN IRELAND AREAS HAS SIMILARITIES FROM THE FIRST

YEARS

TO THE FINAL

YEARS

.

ALSO

IN FINAL

YEARS

,

BOTH

HAD A DIFFERENCE IN DETAILS .

ENGLAND

AND SCOTLAND ,

BOTH

TENDED TO FLUCTUATE UNEVENLY OVER THE

YEARS

AND SO DID SCOTLAND. LOOKING AT THE FIGURE IN WALES AND NORTHERN IRELAND DETAILS, IN THE FIRST

YEARS

UNTIL 1998 , THE PERCENTAGE OF RIVER WATER QUALITY IN

BOTH

AREAS HAD SIMILARITIES APPROXIMATELY FROM 90% TO ABOVE 90%.

BOTH

AREAS WERE UNCHANGED BUT

ALSO

AFTER 1998 WALES DECREASED FROM OVER 90% TO JUST UNDER 90% , OTHERS ROSE FROM AROUND 90% TO NEARLY 100%. TURNING TO THE REMAINING STATISTICS , BY 1990

ENGLAND

HAD INCREASED BY 20% , FROM AROUND 45% TO AROUND 65% IN 1996 .

BESIDES

THAT,

ENGLAND

WAS A SHARP DECLINED TO 30% , DECLINED BY 35%.

THEN

THE SAME YEAR IMMEDIATELY , IT WAS WENT UP AGAIN TO 50% . REGARDING

TO

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SCOTLAND , ALL IN

ALL

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THE FIGURES FLUCTUATION THROUGH THE

YEARS

AS WELL AS

ENGLAND

, IT HAD THE LOWEST POINT IN THE BEGINNING WITH APPROXIMATELY 21% AND THERE WAS A SURGE UNTIL 2000 WITH 50% AND IT SLIGHTLY WENT DOWN TO 40% IN THE FINAL YEAR AFTER THE SURGE IN 2000.