A few weeks ago, the US Environmental Protection Agency released its list of potential drinking water contaminants that they may regulate due to the detrimental effects of these chemicals on health and the environment (and because they're required to by law).
What's different about the list this time around? It includes pharmaceuticals: hormone therapy drugs, to be exact. The New York Times reported it, as did Tree Hugger. Studies have shown the detrimental effects of hormones--specifically estrogen--on aquatic wildlife, turning fish into hermaphrodites or male frogs into females.* Here's a short summary of some scientific literature reporting the effects of pharmaceuticals on us and the environment. I searched around for some publicly available scientific literature but have yet to find one specifically addressing estrogen. I will update this if I do find some articles.
Anyways, is this truly newsworthy yet? Apparently not to the media, as a Yahoo, Lexis, and Google search turned up only one source for reporting the news: Greenwire.**
So why do I think it's newsworthy?
Because I am not aware that waste water treatment plants test for and treat pharmaceuticals...pharmaceuticals that have a seriously detrimental effect on flora and fauna. Additionally, safe drinking water and cleaner bodies of water used to be a hot topic which spurred the creation of several federal acts, including the Federal Water Pollution Control Act (more widely known as the Clean Water Act) and the Safe Drinking Water Act. Nowadays, climate change--aka global warming--is the trendy environmental problem to tackle. I am not minimizing the importance of reducing greenhouse gases; rather, I am highlighting the fact that we have more than one pressing environmental problem that, without intervention from our regulating bodies, may continue unfettered until the next disaster.
I think about what happens when I pour a chemical down the drain. When I use that kitchen cleaner to wipe down my sink, does the waste water treatment plant account for these types of chemicals and filter them out? When I take a multivitamin, I know that my body doesn't absorb all the nutrients available. What happens to that excess when it reaches the waste water treatment plant?
Which aquifer supplies my tap water and are there any brownfields nearby? When I use pesticides on my lawn to kill weeds, where does the excess go? (Actually, I don't have a lawn, but if I did and I treated it with pesticides or insecticides, I would probably ask that question.) What about the aging water system (the pipes in particular) in the US? And if you don't think that water quality a major problem, read this article from the Cleveland Plain Dealer regarding drinking water and schools.
So...the fact that hormones are on the list for study tells me that someone else is thinking about the plethora of diverse pollutants that affect our water and is doing something about it. However, the list of contaminants relates only to drinking water, not wastewater...but it's a start.
Now if I've piqued your curiosity about water, take a gander at this well-written (and entertaining, to boot) article about treating wastewater.
* There were a couple documentaries on the environmental effects on my local PBS channel: Poisoned Waters and The Thin Green Line.
** The search was run on September 25, 2009.