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

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

YEARS

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TO THE FINAL

YEARS

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.

ALSO

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IN FINAL

YEARS

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,

BOTH

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HAD A DIFFERENCE IN DETAILS .

ENGLAND

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AND SCOTLAND ,

BOTH

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TENDED TO FLUCTUATE UNEVENLY OVER THE

YEARS

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

YEARS

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UNTIL 1998 , THE PERCENTAGE OF RIVER WATER QUALITY IN

BOTH

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

BOTH

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AREAS WERE UNCHANGED BUT

ALSO

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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

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

BESIDES

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THAT,

ENGLAND

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

THEN

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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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ALL,

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THE FIGURES FLUCTUATION THROUGH THE

YEARS

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AS WELL AS

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ENGLAND

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, 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.