Clean air, clean water. That's the image that's projected onto the silver screen, but actually Los Angeles is a cesspool of toxins. The good news is that Los Angeles rates at #6 on the list (under New York's #4), but that still doesn't make it a very healthy place to live. The air quality is the worst, with smog creating a thick layer of poison over the city, and the water quality is literally poisonous containing elements like nitrate, arsenic, and methane.
Los Angeles is the 6th most toxic city in the country.