As far as the environment of Curaçao is concerned, there have been

problems in waste management that threaten environmental sustainability on the island include pollution of marine areas from domestic sewage, inadequate sewage treatment facilities, industrial effluents and agricultural runoff, the mismanagement of toxic substances, and ineffective regulations; the refinery in Sint Anna Bay, at the eastern edge of Willemstad’s large natural harbor, processes heavy crude oil from Venezuela; it has caused significant environmental damage to the surrounding area because of neglect and a lack of strict environmental controls; the release of noxious fumes and potentially hazardous particles causes schools downwind to regularly close

. As for nvironment - international agreements, we have; .