River Contaminates Town’s Water Supply When State Leaves It to Beavers

For nearly 70 years, the public water system in the Town of Sterling, Massachusetts operated without incident, delivering clean water to more than 2,000 homes. Because the water from the town’s well field was clean and free of contamination, there was no need for a permanent disinfection system. That all changed in September 1999 when a storm caused by Hurricane Floyd and the state’s increasing beaver population combined to cause bacterial contamination in the town’s water supply.

Deck: 

Ultraviolet Disinfection

Activation Date: 
July 2, 2002
Legacy
Legacy ID: 
13199

Developments in Ozone Technology

Ozone technology developments have opened new applications for these established water treatment technologies. Driving these changes has been the identification of new, more disinfection-resistant microorganisms such as Giardia and Cryptosporidium cysts and governmental regulations designed to protect the public health from the hazards of ingestion of these microorganisms. Additionally, the desire to prevent or minimize the formation of halogenated disinfection byproducts formed during chlorination has stimulated new interest in the use of ozone. Combinations of ozone with hydrogen peroxide and/or ultraviolet (UV) radiation can destroy many contaminants present in ground water.

Deck: 

Small Systems Adopt Ozone Technology to Protect Against Cryptosporidium, Giardia

About The Author: 

Rip G. Rice, Ph.D., is the owner of RICE International Consulting Enterprises in Ashton, Md. He is the author of many papers regarding ozone and ultraviolet technologies, as well as a speaker on the subjects.

Activation Date: 
June 26, 2002
Issue Reference: 
Legacy
Legacy ID: 
13171

Arsenic in Drinking Water - Part 4

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.

Deck: 

Arsenic Removal Methods

About The Author: 

John T. O’Connor, EngD, P.E., is CEO of H2O’C
Engineering, Columbia, Mo. Phone 877-22-WATER; e-mail: john@h2oc.com.

Activation Date: 
June 5, 2002
Legacy
Legacy ID: 
13138

Arsenic in Drinking Water - Part 3

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.

Deck: 

Occurrence of Arsenic in U.S. Waters

About The Author: 

John T. O’Connor, EngD, P.E., is CEO of H2O’C Engineering, Columbia, Mo. Phone 877-22-WATER; e-mail: john@h2oc.com.

Activation Date: 
May 6, 2002
Legacy
Legacy ID: 
13091

Revisiting the Selection of Stainless Steel in Water and Wastewater Treatment Environments: Part 1

Metals such as bronze, copper and iron have been used for thousands of years by man for both peaceful and non-peaceful purposes. One of the most useful purposes for metal is the production of steel.

About The Author: 

Frederick Bloetscher, Ph.D., P.E., is with Public Utility Management and Planning Services, Inc., Hollywood, Fla. Phone 954-925-3492; Fax 954-925-2692; e-mail h2o_man@bellsouth.net.

Richard J. Bullock is with Weir Materials and Foundries, Ponte Vedra Beach, Fla. Phone 904-285-8039; Fax 904-285-8043; e-mail r.j.bullock@att.net.

Robert E. Fergen, P.E., is with Hazen and Sawyer, P.C., Raleigh, N.C. Phone 919-833-7152; Fax 919-833-1828; e-mail refergen@hazenandsawyer.com.

Gerhardt M. Witt, P.G., is with Gerhardt M. Witt & Associates, Inc., West Palm Beach, Fla. Phone 561-642-9923; Fax 561-642-3327; e-mail wittassoc@aol.com.

Gary D. Fries, P.E., is with Boyle Engineering Corporation, Orlando, Fla. Phone 407-425-1100; Fax 407-422-3866; e-mail gfries@boyleengineering.com.

Activation Date: 
May 6, 2002
Legacy
Legacy ID: 
13090

Using Advanced Adsorptive Media for Arsenic Treatment

On November 26, 2001, the new arsenic standard was signed into law—lowering the acceptable level for the contaminant from 50 parts per billion (ppb) to 10 ppb. Approximately 4,100 municipal water systems serving nearly 13 million people nationwide are affected by the law and are required to meet compliance by January 2006. According to the U.S. Environmental Protection Agency (EPA), 97 percent of these systems are small systems serving fewer than 10,000 people each. The economic impact on these small systems is likely to be large. However, there currently are options available to small municipalities that may be more affordable than central treatment.

Deck: 

New POU Technologies May Be the Answer for Small Municipalities Facing High Costs

About The Author: 

Greg Gilles is vice president of technical services and Jennifer Mathis is a sales representative for Apyron Technologies, an Atlanta-based material science company developing advanced solutions for arsenic treatment.

Activation Date: 
April 2, 2002
Legacy
Legacy ID: 
13040

Arsenic in Drinking Water - Part 2

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.

Deck: 

Human Exposure and Health Effects

About The Author: 

John T. O’Connor, EngD, P.E., is CEO of H2O’C Engineering, Columbia, Mo. Phone 877-22-WATER; e-mail john@h2oc.com

Activation Date: 
March 4, 2002
Legacy
Legacy ID: 
12992

Chlorination and Its Alternatives

Purification of drinking water containing microbiological contamination requires some form of disinfection treatment to kill or render microbiological organisms harmless.

Of the available disinfection treatment methods for private water systems, chlorination in the most commonly used.

Deck: 

A disinfection choice for public and private water systems.

About The Author: 

Anne Penkal is the Capital Controls market development manager for Severn Trent Services, Inc., Fort Washington, Pa., an international provider of solutions to municipal and industrial water and wastewater treatment operations. Penkal has more than 17 years experience in the water and wastewater industry. She is a member of the Disinfection Committee of the AWWA and WEF and is the official correspondent for The Chlorine Institute and The Chlorine Chemistry Council. Penkal can be reached at 215-997-4000; apenkal@capitalcontrols.com

Nadia Abboud serves as marketing coordinator for the filtration, disinfection and water bottling products of Severn Trent. A graduate of Villanova University, she received her B.S. in management with concentrations in international business and Arab and Islamic studies. Abboud can be reached at 215-997-4000; nabboud@severntrentservices.com

Activation Date: 
February 26, 2002
Issue Reference: 
Legacy
Legacy ID: 
12972

POU Technology Demonstrates Effectiveness

In March 2001, the U.S. Environmental Protection Agency (EPA) withdrew a proposal for a lower maximum contaminant level (MCL) for arsenic in drinking water that would bring the standard from 50 parts per billion (ppb) to 10 ppb. At that time, the EPA commissioned three studies to examine the benefits, costs and health effects associated with a lower standard for arsenic.

Deck: 

A brief look at one solution for arsenic removal

About The Author: 

Jennifer E. Mathis is an account representative for Apyron Technologies, Inc., Atlanta.

Activation Date: 
February 26, 2002
Issue Reference: 
Legacy
Legacy ID: 
12970

Boost POE Sales by Leveraging the New Arsenic Standard

Recent market research showed that more than 73 percent of consumers prefer to consult with a water treatment professional when dealing with arsenic. Combining this inclination with the preference for the POE approach, the treatment professional has a unique opportunity to generate significant new revenue from POE sales with minimal upfront effort.

About The Author: 

Craig Winter, CWS-III, is president of EnviroInvestigations & Remediation, Inc., which operates a water treatment sales and service division called Advanced Quality Water Solutions (AQWS) (www.aqws.com). The company is headquartered in Brunswick, Maine, with additional offices in central and northern Maine. AQWS has been working to combat arsenic contamination in drinking water since 1999. Craig has more than 12 years experience working with contaminated groundwater issues and can be reached at 207-721-8620; cwinter@suscom-maine.net

Publication Date: 
January 30, 2002
Activation Date: 
January 30, 2002
Issue Reference: 
Legacy
Legacy ID: 
12916
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