Beginning in the late 1990's, the U.S. Geological Survey began to develop analytical methods to detect, at concentrations less than 1 microgram per liter (μg/L), emerging water contaminants such as pharmaceuticals, personal-care chemicals, and a variety of other chemicals associated with various human and animal sources. During 1998-2005, the U.S. Geological Survey analyzed the following Michigan water samples: 41 samples for antibiotic compounds, 28 samples for pharmaceutical compounds, 46 unfiltered samples for wastewater compounds (dissolved and suspended compounds), and 113 filtered samples for wastewater compounds (dissolved constituents only).
| Author: U. S. Department of the Interior |
| Publisher: Createspace Independent Publishing Platform |
| Publication Date: Apr 28, 2014 |
| Number of Pages: 44 pages |
| Binding: Paperback or Softback |
| ISBN-10: 1497537029 |
| ISBN-13: 9781497537026 |