Aquifer found to have more contamination

May 16, 2006

More chemical contamination reportedly has been found in a shallow aquifer under a park in Ann Arbor, Mich., but officials say residents face no health threat.

Similar contamination was found in a nearby fishing lake but at lower levels, reports the Ann Arbor News.

The findings were made during an underground water cleanup by Pall Corp. and have left environmental officials both surprised and puzzled, the report said.

The aquifer contamination was detected in a new well drilled recently and the report said that at a depth of about 40 feet, levels of 1.4-dioxane reached 5,178 parts per billion. The state's cleanup level for dioxane, classified as a probable human carcinogen, is 85 parts per billion.

An expert on environmental engineering for Pall said it's not unusual to find small pockets of high-level contamination. He said results from other nearby wells showed much lower levels, suggesting that it was a very small area of contamination.

Copyright 2006 by United Press International

Explore further: Hexavalent chromium in well water can come from natural sources

Related Stories

Hexavalent chromium in well water can come from natural sources

October 26, 2016

Last year, water quality officials in North Carolina detected potentially harmful levels of hexavalent chromium, a carcinogen, in drinking-water wells near coal plants in the state. Given the typical, elevated levels of chromium ...

Study links groundwater changes to fracking

November 15, 2016

A new study has found heightened concentrations of some common substances in drinking water near sites where hydraulic fracturing has taken place. The substances are not at dangerous levels and their sources are unclear, ...

Pumping draws arsenic toward a big-city aquifer

September 11, 2013

Naturally occurring arsenic pollutes wells across the world, especially in south and southeast Asia, where an estimated 100 million people are exposed to levels that can cause heart, liver and kidney problems, diabetes and ...

Contaminants in groundwater used for public supply

May 21, 2010

More than 20 percent of untreated water samples from 932 public wells across the nation contained at least one contaminant at levels of potential health concern, according to a new study by the U.S. Geological Survey.

Recommended for you

Synthetic chemicals: Ignored agents of global change

January 24, 2017

Despite a steady rise in the manufacture and release of synthetic chemicals, research on the ecological effects of pharmaceuticals, pesticides, and industrial chemicals is severely lacking. This blind spot undermines efforts ...

New findings on carbon cycle feed climate research

January 23, 2017

A Florida State University researcher is taking a deep dive into the carbon cycle and investigating how carbon moves from the ocean surface to greater depths and then remains there for hundreds of years.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.