Caution: Lead in Water

The interest in reducing environmental lead exposure is evident with the recent revision by the U.S. Environmental Protection Agency (EPA) for the nation’s Air Quality Standards, which were lowered from 1.5 to 0.15 ug of lead per cubic meter of air. “With these stronger standards, a new generation of Americans is protected from harmful lead emissions, especially children,” said EPA Administrator Stephen L. Johnson. The same goal was desired for the drinking water lead standard, which the EPA lowered in 1998 from 50 to 15 µg of lead per liter of water.

Deck: 

Elevated levels of lead in drinking water occur despite government action

Publication Date: 
December 18, 2008
Activation Date: 
December 18, 2008
Issue Reference: 
Legacy
Legacy ID: 
19928

POUs for PFCs

A recent third-party study by Minnesota-based Water Science & Marketing (WSM), LLC, identified commercially available point-of-use (POU) treatment devices as effective for removing perfluorochemicals (PFCs) from drinking water supplies. Stephanie Harris, managing editor of Water Quality Products, recently spoke Phil Olsen, partner and project manager for WSM, about the findings of this study.

Stephanie Harris: Provide an overview of the recently completed PFC study.

Publication Date: 
August 25, 2008
Activation Date: 
August 25, 2008
Files: 
Issue Reference: 
Legacy
Legacy ID: 
19581

Removing Perchlorate with Resin

Perchlorate is one chlorine atom (green) and four atoms of oxygen (red).

Activation Date: 
August 25, 2008
Issue Reference: 
Legacy
Legacy ID: 
19574

Arsenic Removal by Regenerable Anion Resin

In January 2006, the U.S. Environmental Protection Agency started enforcing the new arsenic limit of 10 parts per billion (ppb) in drinking water. The previous limit was 50 ppb. Since that date, there has been a flurry of activity in bringing selective arsenic media to the market.

Deck: 

Effective arsenic removal applications for water treatment

Publication Date: 
April 25, 2008
Activation Date: 
April 25, 2008
Company Reference: 
Issue Reference: 
Legacy
Legacy ID: 
19211

Treating Troubled Water

The U.S. Environmental Protection Agency (EPA) has long regulated radium in drinking water, but in December 2000 the EPA lowered the maximum allowable levels for radionuclides. As a result, water utilities across the country retested for radium. Those that found radium contamination exceeding new EPA standards faced a three-year deadline to comply—by either removing the radium to improve the quality of the existing water supply or finding alternative water sources.

Deck: 

Water treatment system successfully removes radium from drinking water

Publication Date: 
March 27, 2008
Activation Date: 
March 27, 2008
Issue Reference: 
Legacy
Legacy ID: 
19119

Emerging Contaminants

Are PFCs the next public water concern?

Like other manmade chemicals that have been polluting our drinking water over the years, perfluorochemicals (PFC) are not naturally occurring chemicals; they were developed in a lab- oratory to meet an industry need. PFCs are carbon chains (typically four or eight carbon atoms) that are bonded to fluorine atoms.

PFCs can be used as an ingredient in a manufacturing process or as part of a finished product. Companies have used them for a number of years for products that resist heat, oil, grease and water.

Publication Date: 
November 8, 2008
Activation Date: 
February 27, 2008
Files: 
Issue Reference: 
Legacy
Legacy ID: 
19017

Keeping a Watchful Eye on Arsenic

Maintaining compliant arsenic levels in drinking water with regular testing of POE and POU treated water

Activation Date: 
February 27, 2008
Files: 
Issue Reference: 
Legacy
Legacy ID: 
19011
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