Under the Town and Country Planning Law of 1972, the government has the power to issue "reservation orders" in order to protect historic buildings, trees, or other specific points. Other conservation laws seek to preserve forests, restrict the hunting of wildlife, and maintain environmental health. The most significant environmental problems in Cyprus are water pollution, erosion, and wildlife preservation. The purity of the water supply is threatened by industrial pollutants, pesticides used in agricultural areas, and the lack of adequate sewage treatment. Other water resource problems include uneven rainfall levels at different times of the year and the absence of natural reservoir catchments. Cyprus has 0.2 cu mi of water, of which 91% is used for farming activity. One hundred percent of Cyprus' urban and rural dwellers have access to safe water. Another environmental concern is erosion, especially erosion of Cyprus's coastline. In accordance with the Foreshore Protection Law, several coastal areas have been zoned to prevent undesirable development. The Ministry of Agriculture and Natural Resources has primary responsibility for environmental matters. The expansion of urban centers threatens the habitat of Cyrpus' wildlife. As of 1994, one mammal species, 17 types of birds and 43 plant species in a total of 2,000 are threatened with extinction. About 20 species of flora are protected. The Cyprus mouflon or wild sheep is protected in the Paphos Forest game reserve.