How does the federal government influence cities' enviremental policies

The EPA sets and enforces tolerable limits of pollution, and it establishes timetables to bring polluters into line with standards, an important aspect of its work since most of these requirements are recent and industries must be given reasonable time, often several years, to conform to new standards.

The EPA sets and enforces tolerable limits of pollution, and it establishes timetables to bring polluters into line with standards, an important aspect of its work since most of these requirements are recent and industries must be given reasonable time, often several years, to conform to new standards.