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
very limited natural fresh water resources; increasing
reliance on desalination
Man, Isle of
waste disposal (both household and industrial);
transboundary air pollution
Marshall Islands
inadequate supplies of potable water; pollution of
Majuro lagoon from household waste and discharges from fishing
vessels
Martinique
NA
Mauritania
overgrazing, deforestation, and soil erosion aggravated
by drought are contributing to desertification; very 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