▁ ▁According ▁to ▁Leg amb iente , ▁the ▁only ▁reason ▁sw imming ▁was ▁not ▁b anned ▁on ▁the ▁Italian ▁L akes ▁was ▁because ▁the ▁state ▁of ▁Lomb ard y ▁changed ▁the ▁law . ▁They ▁state ▁that ▁poll ution ▁levels ▁in ▁the ▁la kes ▁do ▁not ▁conform ▁to ▁European ▁r ul ings ▁and ▁the ▁lack ▁of ▁se w age ▁treatment ▁is ▁illegal . ▁ ▁Their ▁ 2 0 1 0 ▁measurements ▁found ▁samples ▁taken ▁at ▁P onte ▁T res a , ▁Ost ene ▁and ▁Port ▁Cer es io ▁to ▁be ▁" he av ily ▁poll uted " ▁( more ▁than ▁ 1 , 0 0 0   U FC / 1 0 0   ml ▁int est inal ▁enter oc oc ci ▁and / or ▁greater ▁than ▁ 2 0 0 0   U FC / 1 0 0   ml ▁E . ▁col i ). ▁ ▁Fa una ▁ ▁The ▁lake ▁is ▁full ▁of ▁fish . ▁A part ▁from ▁a ▁few ▁protected ▁areas , ▁such ▁as ▁the ▁mouth ▁of ▁the ▁River ▁C uc cio ▁in ▁Por le zza , ▁fish ing ▁is ▁allowed ▁anywhere , ▁although ▁according ▁to ▁various ▁reg ulations . ▁Prote cted ▁species ▁are ▁the ▁ble ak ▁and ▁the ▁white ▁cla wed ▁c ray fish ▁( A ust rop ot am ob ius ▁pal lip es ). ▁The ▁ble ak ▁is ▁almost ▁ext inct ▁here , ▁unlike ▁in ▁L ago ▁Mag giore , ▁and ▁planning ▁is ▁under ▁way ▁for ▁the ▁controlled ▁rep op ulation ▁of ▁the ▁lake , ▁particularly ▁around ▁P