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the environmental whack jobs that are claiming plastics are the cause

There is no question that phthalates are endocrine disruptors.

The is no question that they are ubiquitous in the products we use and so people are being exposed to estrogen-like chemicals that they didn't used to be exposed to.

There is no question that hormonal compounds can have effects at extremely low concentrations.

A person is not a whack job if they point out that maybe this combination of factors could be a serious problem and it is certainly worth investigating.

These estrogens reach our water treatment plants and end up back in our tap water.

I have heard that although there are water treatment plants that feed directly back into the tap water system, this is not yet common.

Endocrine disruptors are all around us. They can be found naturally in more than three hundred plants that can bind with receptors in humans. Naturally occurring estrogens are common in many cereals, legumes, fruits, and vegetables. Chocolate, garlic, celery, coffee, grapefruit, tea, and other foods we enjoy every day have been shown to have antispermatogenic activity. It's difficult for many to remain balanced and objective when considering man-made chemicals in the environment that allegedly disrupt hormonal systems vs. the much greater amount of these disruptors we consume from everyday foods people have been enjoying for a long, long time.

Further study may be warranted but the fear is not.

There is also no question that our biologically generated estrone, estrial, estradial, and it metabolites have varying degrees of “strength”, if I may use that term. The same is true of phthalates and phytoestrogens such as soy. Neither of the latter substances come close to having the same kind of kind of effects on the human body as the former. It is more likely that the effects that are cited in the article you posted are from an endogenous imbalance of the many different estrogens and their metabolites (ie the 2-, 4-, and 16-alpha-hydroxderivatives of estrone).
When someone attempts to use such words as “estrogen-like compounds”, “estrogen disruptors” and the phrase “There is no question that hormonal compounds can have effects at extremely low concentrations” alarm bells go off in my head. It tells me that they have no clue as to what they are talking about. It also tells me that they have an agenda which has no basis in scientific fact but are working to reach only a consensus. Consensus, as we have seen in the concept of man-made global warming, is not science at all but politics masquerading as science.