PCE is a commonly used solvent and frequent contaminant of drinking water supplies. So, should you worry about it?

The answer is yes, according to a study published in the open access journal Environmental Health in September. The study tracked the infants of pregnant women exposed to the chemical inadvertently by PCE coating inside water piping used on Cape Cod between 1969 and 1983.

In response to concerns expressed by scientists, the EPA in January issued a “health advisory” on perchlorate and asked for review of the issue from the National Academy of Sciences. Meanwhile, infants are getting too much perchlorate, from both the powdered formula and from the water used to mix it.

However, the most important thing to do is keep grass clippings and excess fertilizer off the sidewalks and streets. These are the two main culprits in polluting our streams with phosphates, according to the Colorado State Extension Service.