▁invest ment ▁install ations ▁throughout ▁the ▁Amazon ▁have ▁resulted ▁in ▁the ▁Ach u ar ▁being ▁ex cluded ▁from ▁a ▁portion ▁of ▁oper ational ▁& ▁dr illing ▁areas ▁in ▁the ▁territory ▁tradition ally ▁claimed ▁by ▁the ▁Ach u ar . ▁Non - Ind igen ous ▁contact ▁has ▁also ▁seen ▁introduction ▁of ▁new ▁dise ases ▁( including ▁new ▁ST D s ) ▁and ▁conflict ▁related ▁to ▁poll ution ▁from ▁oil ▁sp ills , ▁impro per ▁business ▁practices , ▁and ▁violent ▁interactions . ▁ ▁In ▁multiple ▁but ▁not ▁all ▁cases , ▁oil ▁sp ills ▁of ▁various ▁degrees ▁have ▁been ▁in ade qu ately ▁rem edi ated ▁by ▁simple ▁bur ial . ▁Major ▁oil ▁pip elines ▁run ▁above ▁rivers ▁that ▁the ▁Ach u ar ▁depend ▁on ▁for ▁bath ing ▁and ▁drink ing . ▁When ▁these ▁oil ▁pip elines ▁break , ▁poll ution ▁can ▁and ▁has ▁occurred , ▁thereby ▁de grad ing ▁the ▁resource ▁and ▁limit ing ▁Ach u ar ▁access ▁to ▁their ▁historic ▁fresh ▁( but ▁un tre ated ) ▁water ▁sources . ▁Vi ol ent ▁conflicts ▁with ▁non - Ind igen ous ▁people ▁have ▁ar isen ▁between ▁oil ▁company ▁employees ▁and ▁the ▁native ▁Ach u ar . ▁As ▁in ▁much ▁of ▁the ▁Amazon ▁Bas in , ▁ind igen ous ▁sexual ▁practices ▁differ ▁from ▁those ▁in ▁non - Ind igen ous ▁populations , ▁and ▁modern ▁" safe ▁sex " ▁practices ▁are ▁very ▁poor ly ▁dis sem in ated ▁thereby ▁putting ▁at ▁risk ▁their ▁population ▁and ▁culture . ▁As ▁a ▁consequence , ▁some ▁advoc ates ▁claim ▁that ▁non