RT Report T1 Regional Programme of Action for the Protection of the Marine Environment of the East Asian Seas from the Effects of Land-based Activities A1 United Nations Environment Programme, K1 regional programme K1 water management K1 sewage disposal K1 recycling K1 industrial waste K1 health K1 marine environment K1 coastal area K1 pollution K1 marine pollution K1 Biodiversity K1  Coastal and Marine Ecosystems K1 Health K1 Marine Litter K1 Pollution K1 Regional seas K1 Waste management SN 82-7701-012-5 YR 2000 FD 2000 LK https://wedocs.unep.org/handle/20.500.11822/29055 UL https://wedocs.unep.org/handle/20.500.11822/29055 NO Human activities on land are a major threat to the health, productivity and biodiversity of the marine environment. About 80per cent of all marine pollution is caused by human activities on land in the form of sewage disposal in rivers and coastal waters; urban storm-water run-off; sediments mobilization; inadequately treated waters from industries; discharges of phosphorous and nitrogen used in agriculture; and finally, dumping of heavy metals and persistent organic pollutants. DS UN Environment Document Repository RD Sep 22, 2026