▁were ▁owned ▁by ▁the ▁French ▁company ▁ ▁at ▁the ▁time . ▁ ▁Es sex ▁and ▁Su ff olk ▁Water ▁In ▁order ▁to ▁provide ▁improved ▁supplies ▁to ▁Great ▁Y arm outh , ▁the ▁company ▁bought ▁most ▁of ▁the ▁Tr inity ▁Bro ads ▁in ▁ 1 9 9 5 . ▁These ▁are ▁isolated ▁from ▁the ▁River ▁B ure ▁by ▁a ▁narrow ▁channel , ▁and ▁have ▁been ▁further ▁protected ▁by ▁the ▁installation ▁of ▁a ▁sl u ice ▁gate . ▁They ▁were ▁designated ▁as ▁a ▁Site ▁of ▁Special ▁Scient ific ▁Interest ▁in ▁ 1 9 9 8 . ▁O sm es by ▁Works ▁is ▁situated ▁by ▁the ▁side ▁of ▁Or mes by ▁Broad , ▁and ▁can ▁treat ▁water ▁from ▁the ▁broad s . ▁A ▁second ▁source ▁of ▁water ▁is ▁p ump ed ▁some ▁ ▁from ▁the ▁River ▁B ure ▁to ▁the ▁works . ▁Part s ▁of ▁the ▁works ▁date ▁from ▁the ▁ 1 9 3 0 s , ▁and ▁others ▁from ▁the ▁ 1 9 5 0 s , ▁but ▁a ▁major ▁upgrade ▁was ▁completed ▁in ▁ 2 0 0 5 , ▁to ▁enh ance ▁the ▁treatment ▁of ▁water ▁from ▁the ▁broad s , ▁which ▁is ▁affected ▁by ▁alg al ▁blo om ▁for ▁around ▁a ▁quarter ▁of ▁each ▁year . ▁▁▁ ▁In ▁order ▁to ▁meet ▁long ▁term ▁supply ▁requirements , ▁the ▁company ▁looked ▁at ▁several ▁options , ▁and ▁in ▁ 1 9 9 7 ▁settled ▁on ▁expand ing ▁the ▁capacity ▁of ▁Ab ber ton ▁Res er voir . ▁After ▁ten ▁years ▁of ▁design ▁work ▁and ▁a ▁length