Two bonus features supplementing last week’s major package on estrogenic wells in Wisconsin’s karst region.
In one of the most intensively farmed parts of America’s Dairyland, where 29 percent of the county’s private wells test unsafe due to bacteria or nitrates, residents have a new concern: estrogenic well water.
Scientists have learned that some chemicals may mimic or disrupt the hormones of people and wildlife, with potentially health-damaging results. They can be natural, like the estrogens produced by plants or cows, or synthetic, like birth control pills. They are known to be widespread in the nation’s waters, and to a lesser extent have turned up in groundwater. Sidebar to story on estrogenic wells in northeastern Wisconsin’s karst region.
“A well-managed place is not going to get manure into the groundwater,” said Laurence Shore, a physiologist in Israel who studies the fate of hormones in the environment. With a video tour of an anaerobic digester at the two-dairy, 8,000-cow Holsum Dairies in Calumet County.
Prescription drugs are contaminating Lake Michigan two miles from Milwaukee’s sewage outfalls, suggesting that the lake is not diluting the compounds as most researchers expected, according to new research. Republished from Environmental Health News.
For the public officials who safeguard Milwaukee’s water, Cryptosporidium changed everything.
Researchers exposed minnows to a blend of linuron, an herbicide used to control grasses and weeds, and DEHP, a plasticizer used to make medical products.
Minnesota researchers have found endocrine disruptors in nearly every lake they’ve tested.
Environmental experts said the discoveries in lakes, rivers and streams increase the pressure on Wisconsin to figure out what’s in its water. A key Wisconsin Department of Natural Resources official said that the state’s waters were likely also contaminated, but that the state had no money for such monitoring.
Advice from experts on how to limit your exposure and your impact on the environment.
“It’s hard not to make people too worried about a lot of things,” said UW-Madison pediatric endocrinologist Ellen Connor, after running through a plethora of hypothesized health effects — genital abnormalities, tumors, lower sperm counts, diabetes, early puberty — and an equally long list of worrisome chemicals.
The four groups of chemicals that trigger consumption advisories — PCBs, mercury, dioxins and PFOS (perfluorooctane sulfate) — have all been associated with endocrine disruption.
Emails from the Wisconsin Department of Natural Resources and the U.S. Environmental Protection Agency.
Males exposed to chemicals managed to mate if other males were not around. But if they had to compete with the control males, however, they “suffered nearly total reproductive failure”: They had no game.
More about nonylphenol and BPA, two chemicals commonly found in Minnesota’s waters.