| Country | Environment - current issues |
| Kuwait | limited natural fresh water resources; some of world's largest and most sophisticated desalination facilities provide much of the water; air and water pollution; desertification |
| Kyrgyzstan | water pollution; many people get their water directly from contaminated streams and wells; as a result, water-borne diseases are prevalent; increasing soil salinity from faulty irrigation practices |
| Laos | unexploded ordnance; deforestation; soil erosion; most of the population does not have access to potable water |
| Latvia | Latvia's environment has benefited from a shift to service industries after the country regained independence; the main environmental priorities are improvement of drinking water quality and sewage system, household, and hazardous waste management, as well as reduction of air pollution; in 2001, Latvia closed the EU accession negotiation chapter on environment committing to full enforcement of EU environmental directives by 2010 |
| Lebanon | deforestation; soil erosion; desertification; air pollution in Beirut from vehicular traffic and the burning of industrial wastes; pollution of coastal waters from raw sewage and oil spills |
| Lesotho | population pressure forcing settlement in marginal areas results in overgrazing, severe soil erosion, and soil exhaustion; desertification; Highlands Water Project controls, stores, and redirects water to South Africa |
| Liberia | tropical rain forest deforestation; soil erosion; loss of biodiversity; pollution of coastal waters from oil residue and raw sewage |
| Libya | desertification; limited natural fresh water resources; the Great Manmade River Project, the largest water development scheme in the world, is being built to bring water from large aquifers under the Sahara to coastal cities |
| Liechtenstein | NA |
| Lithuania | contamination of soil and groundwater with petroleum products and chemicals at military bases |
| Luxembourg | air and water pollution in urban areas, soil pollution of farmland |
| Macau | NA |
| Macedonia | air pollution from metallurgical plants |
| Madagascar | soil erosion results from deforestation and overgrazing; desertification; surface water contaminated with raw sewage and other organic wastes; several endangered species of flora and fauna unique to the island |
| Malawi | deforestation; land degradation; water pollution from agricultural runoff, sewage, industrial wastes; siltation of spawning grounds endangers fish populations |
| Malaysia | air pollution from industrial and vehicular emissions; water pollution from raw sewage; deforestation; smoke/haze from Indonesian forest fires |
| Maldives | depletion of freshwater aquifers threatens water supplies; global warming and sea level rise; coral reef bleaching |
| Mali | deforestation; soil erosion; desertification; inadequate supplies of potable water; poaching |
| Malta | limited natural fresh water resources; increasing reliance on desalination |
| Marshall Islands | inadequate supplies of potable water; pollution of Majuro lagoon from household waste and discharges from fishing vessels |
| Mauritania | overgrazing, deforestation, and soil erosion aggravated by drought are contributing to desertification; limited natural fresh water resources away from the Senegal, which is the only perennial river; locust infestation |
| Mauritius | water pollution, degradation of coral reefs |
| Mayotte | NA |
| Mexico | scarcity of hazardous waste disposal facilities; rural to urban migration; natural fresh water resources scarce and polluted in north, inaccessible and poor quality in center and extreme southeast; raw sewage and industrial effluents polluting rivers in urban areas; deforestation; widespread erosion; desertification; deteriorating agricultural lands; serious air and water pollution in the national capital and urban centers along US-Mexico border; land subsidence in Valley of Mexico caused by groundwater depletion note: the government considers the lack of clean water and deforestation national security issues |
| Micronesia, Federated States of | overfishing, climate change, pollution |
| Moldova | heavy use of agricultural chemicals, including banned pesticides such as DDT, has contaminated soil and groundwater; extensive soil erosion from poor farming methods |
| Monaco | NA |
| Mongolia | limited natural fresh water resources in some areas; the policies of former Communist regimes promoted rapid urbanization and industrial growth that had negative effects on the environment; the burning of soft coal in power plants and the lack of enforcement of environmental laws severely polluted the air in Ulaanbaatar; deforestation, overgrazing, and the converting of virgin land to agricultural production increased soil erosion from wind and rain; desertification and mining activities had a deleterious effect on the environment |