Perchlorate Reduction

This article summarizes the current state of efforts to address this hot topic from the point of view of the NSF/ANSI Drinking Water Treatment Unit (DWTU) Standards.

Deck: 

Claims in the NSF/ANSI DWTU Standards

About The Author: 

Rick Andrew is technical manager of the DWTU Program at NSF International, Ann Arbor, Mich. He has served in this role for more than two years, and has been with NSF’s DWTU Program for more than five years. Andrew has a bachelor’s degree in chemistry and a master’s degree in business administration from the University of Michigan. He can be reached by E-mail at andrew@nsf.org.

Activation Date: 
October 7, 2004
Issue Reference: 
Legacy
Legacy ID: 
15498

Product Standards

It is easy to confuse the subtle differences between some, and even easier yet to be confused by the requirements of individual standards.

Deck: 

Making the Right Choice

About The Author: 

Tom Bruursema is general manager of the NSF Drinking Water Treatment Unit Program. He can be reached by phone at 734-769-5575, or by E-mail at bruursema@nsf.org.

Activation Date: 
July 29, 2004
Files: 
Issue Reference: 
Legacy
Legacy ID: 
15349

NSF Conference Addresses Public Water System Compliance Using POU/POE

In February, NSF International arranged for many experts to cover the issues and facets of point-of-use and point-of-entry (POU/POE), how they can be used for PWS compliance and other opportunities for the manufacturers and users. This article is intended to provide opinions and a broad conference overview.

Deck: 

Special Feature

Activation Date: 
May 30, 2003
Files: 
Issue Reference: 
Legacy
Legacy ID: 
14117

ETV Testing Verifies Membrane Filtration Plant Treats Surface Water, Meets D/DBP Rule

A study published as part of the EPA's Environmental Technology Verification (ETV) Program verifies the performance of a Fyne Process membrane filtration plant tested on high organic-laden surface water in Barrow, Ark. The plant was able to remove significant levels of organics--precursors to disinfection byproducts such as trihalomethanes (THM) and haloacetic acids (HAA)--producing water that easily met the disinfection byproduct standards set by the EPA's stringent Stage 1 D/DBP Rule.

About The Author: 

PCI Membrane Systems offers complete water treatment packages including containerized plants, and also can provide remote monitoring of system performance. In addition to tubular membranes for liquids containing suspended or colloidal materials, PCI also supplies spiral-wound or hollow fiber membranes for clean solutions and ceramic membranes for high chemical compatibility and thermal resistance.

Activation Date: 
November 27, 2002
Files: 
Legacy
Legacy ID: 
13439

POU Faucet Selections

Faucets for point-of-use (POU) water treatment systems must combine an attractive, contemporary appearance with materials that ensure safety and purity. POU faucets and systems are becoming increasingly important to help meet consumer demands for safe, high-quality drinking water. It is estimated that by 2020 almost every household will have a POU or point-of-entry (POE) water treatment system.

About The Author: 

Gary M. Strunak is national sales manager for Tomlinson Industries' No-Drip product line. He is responsible for all No-Drip sales in the U.S. and Canada. He has been with Tomlinson since 1979. Tomlinson Industries has been a supplier to the bottled water industry since 1958. Strunak can be reached at 216.587.3400; fax 216.587.0733; gstrunak@tomlinsonind.com.

Publication Date: 
October 29, 2002
Activation Date: 
October 29, 2002
Files: 
Company Reference: 
Issue Reference: 
Legacy
Legacy ID: 
13403

Zinc Coatings on Handrail Tubing: A Comparative Analysis

When applying zinc metal to steel handrail tubing for corrosion protection, batch hot-dip galvanizing and in-line, continuous galvanizing are the two most common methods. Understanding the metallurgy, bond strength, corrosion mechanisms and testing of these two galvanizing methods may lead to better design decisions for particular applications.

When applying zinc metal to steel handrail tubing for corrosion protection, batch hot-dip galvanizing and in-line, continuous galvanizing are the two most common methods.

About The Author: 

Philip G. Rahrig is the executive director for the American Galvanizers Association, Englewood, Colo.

Publication Date: 
August 5, 2002
Activation Date: 
August 5, 2002
Files: 
Legacy
Legacy ID: 
13245

Back to the Basics, Part 1

Basic water chemistry, terminology and applications can be very complicated and not seem so basic to individuals without a chemistry background. This series of articles will help shed light on the chemistry of water and the mysteries that it can contain, plus explain the technologies used to treat water so the purchaser can make an educated attempt to find the right solution for a particular application. There are no cut-and-dry formulas for water treatment and certainly no cure-all for every application or problem, but with an understanding of how water works and the technologies developed to treat water, a person can utilize his resources to come up with solutions for his particular need or application.

Deck: 

Brushing Up on Water Chemistry 101

About The Author: 

Jeff Roseman is a CWS-I with the Water Quality Association. He has a vast knowledge of chemistry and physics from studies in electrical engineering at Purdue University and helped develop a UV light air purifier and ionization controllers for Great Lakes Control Systems, in Leamington, Ontario, Canada.

Activation Date: 
April 25, 2002
Files: 
Issue Reference: 
Legacy
Legacy ID: 
13083

Making the Sale Using Certification to American National Standards

Dealers of drinking water treatment systems today enjoy a growing market of opportunity. However, accompanying this growth is increasing competition, a tightening economy and a far more informed consumer. All of these require dealers to find better ways to differentiate their products and services.

A presentation supported by third-party testing and certification will bring peace of mind to the buyer and dealers closer to the sale.

About The Author: 

Tom Bruursema is the general manager of the Drinking Water Treatment Unit Program and Environmental and Research Services. Bruursema has been employed by NSF for 16 years, serving in a number of technical and administrative positions. Bruursema is a member of the National Onsite Wastewater Recycling Associaiton (past member of board of directors), National Environmental Health Association, Controlled Environment Testing Association (past member of board of directors), American Biological Safety Association, National Air Filtration Association and member of the Water Quality Association World Assembly Division Standards and Regulations Committee.

Publication Date: 
February 26, 2002
Activation Date: 
February 26, 2002
Company Reference: 
Issue Reference: 
Legacy
Legacy ID: 
12971

The State of Regulations

As the POU/POE water treatment industry progresses to new levels and meets new challenges, issues regarding regulations and standards continually arise. As the industry waits for the EPA and U.S. government to finalize regulations, the industry is forced to ride out the MCL changes, rule withdrawals and estimated costs that each proposal brings. Listed here is a review of regulation changes the industry has seen in the last year and a brief look at which ones to watch for in the future.

Deck: 

Government Regulations and Safe Drinking Water Act Updates

Activation Date: 
August 10, 2001
Legacy
Legacy ID: 
12531

Arsenic

On June 22, 2000, the U.S. Environmental Protection Agency (EPA) announced a proposed rule that would lower the current national primary drinking water standard for arsenic.

Deck: 

Addressing Arsenic Contamination Through Residential Drinking Water Treatment

About The Author: 

Jane Wilson, M.P.H., is senior project manager of standards at NSF International.

Activation Date: 
February 14, 2001
Files: 
Legacy
Legacy ID: 
12016