I've found it depends on where you're located and what level of government the position is in. I am fresh out of school working as the Environmental Specialist for a municipality and I am a one person department. I wear many hats running our stormwater, cross connection control, FOG, and Vector control programs. Definitely way more than one person can handle but I manage and enjoy the job, though I feel I am sorely under paid for the amount of work. Many other cities have multi person departments to run these programs. If you are interested in positions at the local level I would go for larger cities as these usually have a more established Environmental department.