The Water Quality Association (WQA) and the point-of-use/point-of-entry (POU/POE) industry as a whole face the usual list of federal and state regulatory challenges in 2002-2003.
The point-of-use and point-of-entry water treatment industry experienced several changes in standards and regulations.
Editor’s Note: Part 1 of this series provided a timeline for the development of a drinking water standard for arsenic. It also summarized the political and public reactions to the U.S. EPA decision to delay and withdraw the arsenic rule.
Part 2 dealt with human exposure and advances in knowledge concerning human health effects of exposure to arsenic.
Part 3 summarized early data on the occurrence of arsenic in U.S. waters.
Arsenic Removal Methods
challenges are emerging in the industry that require new methods and product
developments. This article discusses additional test methods for the AC
ASTM, AWWA and EPA Standard Methods and New Test Methods for AC
Only recently has a substantial amount of data become available on the concentrations of arsenic in United States drinking water supplies. Most of these data have been accumulated by the state regulatory agencies responsible for monitoring drinking waters. Since the arsenic standard has been 50 µg/L, some state agencies have recorded arsenic concentrations only in excess of that concentration. Others have been limited by the sensitivity of the analytical techniques and equipment used for the arsenic analysis. As a result, much of the available arsenic data are “below the limits of detection.
Occurrence of Arsenic in U.S. Waters
On-going health effects studies and research reports (2001) appear to support the argument for lowering the current EPA drinking water standard for arsenic. Studies conducted by EPA, the University of North Carolina and the University of British Columbia have indicated that methylated metabolites of trivalent arsenic are genotoxic. In other words, they damage DNA in human cells.
Human Exposure and Health Effects
The National Academy of Sciences, National Research Council (NAS-NRC) report was released on September 11, 2001. It concluded that the existing health effects data on arsenic essentially were sound. In addition, their review of three new epidemiological studies indicated that the health risks posed by arsenic in drinking water were greater than previously believed. As a result, in October, well before its self-imposed deadline, EPA rescinded its March implementation ban and endorsed the 10 µg/L arsenic MCL.
The Development of Drinking Water Regulations
The unprecedented events of Sept. 11 and the recession that began hitting our nation at the beginning of 2001 created havoc in the business world. The water industry was no exception; it also saw its share of fluctuation. With such an unpredictable economy, we move into 2002. WQP asked industry professionals nationwide to comment on what the water industry may see in the upcoming year. Although these professionals share their outlooks for next year, only time will tell what lies ahead.
2002 Industry Predictions
The topic of arsenic has received a lot of press coverage this year, ever since the Bush administration halted the EPA’s newly issued maximum contaminant level (MCL) of 10 parts per billion (ppb). Since then, the MCL was reinstated back to 50 ppb and further discussions and studies have continued. This article will discuss some of these updates.
How to Select from Available Treatment Options
A recent federal court decision may have created an opportunity for relief from United States Environmental Protection Agency (EPA) rules that impose costs that substantially exceed benefits.
October 2001 Legal Stream
Despite the regulations set for treatment plants, the general public will find itself focusing on the negative and seeking additional treatment from our industry. This spells opportunity for water treatment dealers to illustrate how their services can benefit the public.
I’ve been thinking about the numerous Clean Water Act (CWA) violations we read about — too many to keep up on.