A caption worth a thousand words?

Okay, just take a look at this Irfan Khan photograph that ran with Charles Duhigg‘s New York Times story on water quality.

The caption to the photo reads:

This Los Angeles reservoir contained chemicals that sunlight converted to compounds associated with cancer. The city used plastic balls to block the sun, but nearby homeowners asked why, if the water didn’t violate the law.

Am I … you know … the only one?