Chlorine & Drinking Water: Celebrating a Century   Water Quality Products February 2008   By Jeffrey Sloan
Chlorination remains a cornerstone of waterborne disease prevention

Meeting an Overriding Need   Bottled Water Market August 2007   By Henry R. Hidell, III
Finding safety and balance in municipal and bottled water around the world

A Modern Alternative   Water Quality Products June 2007   By Brent Alspach
Membrane filtration offers a popular means for pathogen removal

Acing the Test in Alaska   Water Quality Products December 2006
Membrane filtration systems provide Alaskan schools with quality water

Making the Switch   Water Quality Products July 2006   By Scott Betcher
Tablet chlorination systems improve safety, boost quality and reliability, and minimize maintenance for two water systems

Exploring the Options   Water Quality Products May 2006   By Stuart Smith & Ben Couch
Developing and upgrading community water treatment systems with ozone

Single-Source Accountability   Water Quality Products May 2006   By Dean W. Potratz
Turnkey and design-build projects save time, money for small municipalities

Out Here, Failure is Not an Option   Water Quality Products January 2006   By James Bratton
Equipment reliability is a must in small towns like Dunn Center, N.D., where Goulds Pumps turbines and Aquavar controllers are in demand.

Activated Carbon   Water Quality Products July 2005   Rick Ciminello
Activated carbon is an excellent adsorbent due to its large surface area and the fact that the diverse surfaces can take on many different types of contaminants.

UV Disinfection   Water Quality Products October 2004   By Melissa Lubitz
It is only within the last year that drinking water guidelines, across both Canada and the United States, have incorporated UV into their standards as an acceptable means of disinfection
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Plugging the Leak . . .in Water Security   Water & Wastes Digest January 2004   William G. Sewell and John F. Shawcross
Whether the utility serves 5,000 people or 500,000 people, a facility that is easy to attack is an attractive, tempting target. Such water utilities must remove the metaphorical bull's-eye tattooed on their facilities by taking swift, certain, prudent action.

Evaluating Your Chlorination System   Water Quality Products September 2003   Carl Hammonds, The Hammonds Companies
This article will focus on three popular forms of chlorine: gas, sodium hypochlorite and dry calcium hypochlorite tablets. Each has advantages and disadvantages relative to cost, convenience, effectiveness, storage and regulatory issues. A look at the pros and cons of each can answer many questions about what's right for your application.
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Municipal Aqueduct System Uses Fiber-Reinforced Polymer Technology for Repair and Strengthening   Water Engineering & Management March 2003   Jay Thomas and Robert St. John
The Providence Water Supply Board faced such a dilemma in 1998 when a major section of a 102"-diameter water line in Cranston, R.I., failed completely. The Providence water line failure raised valid concerns that other sections of the aqueduct also could be prone to failure, since the pipes originally had been installed as long as 50 years ago. Using lightweight, flexible carbon fiber material for strengthening the Providence Aqueduct turned out to be an innovative, cost-effective solution.
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Desalination in America   Water Quality Products November 2002   John B. Tonner, Water Consultants International
On average there are 50 to 75 significant desalination projects per year in the United States with an average capacity of approximately 1 million gallons per day. The majority of these projects utilize membrane processes such as nanofiltration (NF) or reverse osmosis (RO).
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Chlorination and Its Alternatives   Water Quality Products March 2002   By Anne Penkal and Nadia Abboud, Severn Trent Services, Inc.
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.

Consider the Source   Water Engineering & Management February 2002   Bill Swichtenberg
A report released by the Environmental Working Group (EWG) and U.S. Public Interest Research Group (U.S. PIRG) has taken aim at chlorination byproducts (CBPs) in tap water. The group‘s assessment states that more than 100,000 women are at elevated risk of miscarriage or birth defects because of CBPs in tap water.
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Water Security Summit Consensus   Water Quality Products February 2002   Haestad Methods
The theme at the first-of-its-kind Water Security Summit 2001, sponsored by Haestad Methods on December 3 and 4, was “Prevent. Detect. Respond.” More than 600 water utility and government officials from the United States and 20 other countries gathered in Hartford, Conn., to hear 30 experts discuss vulnerability and security measures for the nation’s water supply infrastructure in the event of a bioterrorist attack. Both speakers and attendees explored water system vulnerabilities; discussed guidelines for implementing security plans; and reviewed existing federal, state and private resources.
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Plastic Pipes Handle Pressure from RO Plant   Water Quality Products January 2002   Submitted by the Plastics Pipe Institute
The El Paso County Water Authority was in need of a cost-effective pipe for its reverse osmosis treatment project to supply clean water. A competitive price won the attention of a Texas engineering firm to high density polythylene (HDPE) pipe. HDPE?s performance won some loyalty.
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New Test Technique Measures Light to Gauge Toxicity   Water & Wastes Digest January 2002
Security measures do exist to safeguard our public water supply. Utilities routinely employ techniques such as chlorination, filtration, and ultraviolet treatment, to name a few. However, given the changes that have taken place in the world since September 11, 2001, the prospect for intentional contamination seems more possible than ever before. We want to have confidence that our existing security measures and analytics are adequate but with so many possibilities, how can we?

The Right Time for Bottled Water, POU   Water Quality Products December 2001   Wendi Hope King
Although in October, the IBWA had seen only a slight increase in sales overall since the attacks, individual companies have reported increased sales since Sept. 11. This partly is due to bottled water being named as one of the must-have items in case of further terrorism.
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Bioterrorism May Pose Threat to Water Supplies   Water Quality Products December 2001   Wendi Hope King
If our water supplies actually do come under attack, the question remains: Is there any way for consumers to protect themselves? Unfortunately, it seems to be too early to tell, yet some companies are beginning to emerge with products that may be the answer.
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Advanced Treatment for Groundwater: Treating Low-Quality Groundwater for Municipal Use   Water Engineering & Management November 2001   By Ralph Gelvin, P.E., and Don Novak, P.E.
Groundwater sources that can be used for drinking water purposes are requiring increasing degrees of treatment to meet the requirements of both the regulating agencies and the consumer.
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Treatment Plant Cuts Hydrogen Sulfide Odor With Sodium Nitrite/Nitrate Blend   Water & Wastes Digest October 2001
The Johnstown, Penn., Wastewater Treatment Plant has found a simple and relatively inexpensive chemical solution to a chronic hydrogen sulfide odor problem.

Products In Action: Valves   Water & Wastes Digest August 2001   Jay R. Smith Mfg Co.
When one municipality needed to protect commercial and residential property from back flow in the sanitary sewer line they used the Flood-Gate Automatic Backwater Valve 7140, from Jay R. Smith Mfg. Company located in Montgomery, Alabama.

Polyethylene Pipe Chosen for Delicate Northwest Estuary/Aquarium   Water & Wastes Digest July 2001
Two plants separated by Oregon's Yaquina Bay needed to be connected with two separate pipelines: one line to bring raw sewage to the new plant and one line to carry the finished refuse back to the old plant.
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New Water Meter Thrives in Harsh Environment   Water & Wastes Digest July 2001
The Nevada desert: grit, dust, blazing hot sun by day and ground frosts by night. Just the place to stake out a water meter in an open pit and see how long it can last. That is what happened to a new SmartMeter -- with some revealing results.
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New Pumping System Helps Conserve Water, Energy for Utah Conservation District   Water & Wastes Digest July 2001
The Ogden, Utah, area sought more cost effective and energy efficient ways to optimize and conserve its natural resources.
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Using Variable Frequency Drives for Sewage Lift Stations   Water & Wastes Digest July 2001
High in the Pocono Mountains of Eastern Pennsylvania, the small town of Tobyhanna was in need of a high head, small flow sewage lift pump.
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Continuous Microfiltration System Ensures Safe Drinking Water For Wisconsin Residents   Water & Wastes Digest May 2001
The Kenosha Water Utility treatment facility, located on the shores of Lake Michigan in Wisconsin, needed to upgrade its two plants to meet the expanding water needs of the community it services. Continuous microfiltration helped meet those needs.
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Allocating Capital Risk   Water Engineering & Management May 2001   Dan Elias, Esq.
Shifting municipal responsibilities from the public to private sector may sound like a good idea in today’s competitive market, but without a fair and balanced relationship, privatized utilities are destined to fail.

Self-performed Dewatering Enhances California Sewer Line Project   Water & Wastes Digest April 2001
After years of relying on specialty subcontractors to dewater their deep ditch projects, Jaeger Construction, Inc. self-performed the work on the North Davis Sanitary Sewer Trunkline Project for the city of Salinas, California.
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Insertable Electromagnetic Flowmeter Solves Difficult Piping Problem   Water & Wastes Digest April 2001
A difficult piping arrangement that included limited distance between the metering site and pipe fittings posed a dilemma for the engineering staff at a city of Frederick, Maryland, raw water pumping station.
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Pumping Up Big John   Water Quality Products April 2001   Metropolitan Industries
The John Hancock building, located on Chicago’s Magnificent Mile, needed to revamp its entire pumping and reservoir system without shutting off water to the building’s residents.
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Effluent Diffusers Improve Water Quality, Meet Regulations   Water & Wastes Digest March 2001   WWD Staff
In order to obtain a better permit, a Midwest plant needed to significantly reduce the pollutant concentrations being produced by its current level of discharge. Working with a consultant, management decided an effluent diffuser would be a more reliable and cost-effective option than altering the treatment process or installing a second outfall line.
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Reverse Osmosis Membranes Help Conserve Water At the Sydney 2000 Olympic Games   Water & Wastes Digest March 2001   WWD Staff
During the 2000 Olympic Games, U.S. Filter Australia/Vivendi Water supplied a wastewater reclamation plant that recycled sewage and rainwater runoff at the games site. Part of the purification process involved the use of reverse osmosis (RO) technology.
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Pipe Installed Under LAX Runways, Terminals with No Service Disruptions   Water & Wastes Digest March 2001   WWD Staff
The challenge was to rehabilitate a 2.5 mile sewer running under one of the busiest airports in the world without interrupting flight operations or vehicular traffic. The site was Los Angeles International Airport (LAX).
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Carrier Pipe Installed In Minimal Time Using Casing Spacers   Water & Wastes Digest March 2001   WWD Staff
A recent addition to the Medina County Sanitary pipe grid included placing close to 300 feet of cased pipe under a Cleveland suburb. Project managers sought a means to do the job in minimal installation time.
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Unique Dewatering Method Minimizes Handling   Water & Wastes Digest February 2001   Edited by WWD staff
Throughout the 70s and 80s, a dramatic evolution took place in the area of environmental regulations. In the midst of these rapidly changing government mandates, numerous technological advancements were made, as business and industry raced to keep in compliance. One such technology was "dewatering."
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Data Acquisition, Legacy Systems and Your Intranet   Water & Wastes Digest February 2001   By Fred Noble
There are lots of parallels between the events of November 2000 and the events that take place in any factory or municipality that runs a process or monitors its effluent. The technology exists to achieve the much-talked-about six sigma (3.4 errors per million events) levels of measurement quality or process integrity. But antiquated legacy systems keep getting in the way. And, as is the case on the American political scene, it just is not that easy to replace those old methods of measuring things.

Municipal Plant Upgrades Wastewater Treatment With New Magnetic Flowmeters   Water & Wastes Digest February 2001
Wisconsin's Madison Metropolitan Sewerage District needed to replace its aging electromagnetic flowmeters at 32 points in its Nine Springs Wastewater Treatment Plant. After carefully weighing its options, the district decided to purchase UniMag magmeters from Isco, Inc.
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Innovative Odor Control -- A Good Neighbor Program   Water & Wastes Digest February 2001
The Water and Wastewater Utility Department of the city of Austin, Texas, manages the operation of a regional sludge processing facility where they faced an odor problem. Working with a consultant, they purchased a fixed bed, iron oxide based odor control system from The SulfaTreat Company.
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Privatize Without a Contract   Water Engineering & Management February 2001   Don Renner
The manner in which your plant performs its function and operation as well as the physical appearance of the plant and personnel often are perceived differently by the public and administrative leaders of the community than by the operating personnel.
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Nanofiltration Membranes   Water Quality Products January 2001   Harold Nicoll
Nanofiltration is a liquid separation membrane technology positioned between reverse osmosis (RO) and ultrafiltration.
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New SCADA System Reduces Downtime at Omaha Utility   Water & Wastes Digest January 2001

Like all municipalities, the agency responsible for the distribution of natural gas and water throughout the metropolitan area of Omaha, Nebraska – the Metropolitan Utilities District (MUD) – needed a SCADA system that is user-friendly and failsafe.

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Breathing New Life Into a Legacy SCADA System   Water Engineering & Management August 2000
When the Town of Derry in New Hampshire set out to upgrade its Supervisory Control and Data Acquisition (SCADA) system in the fall of 1999, it faced the challenge of adapting the new system to its existing remote telemetry units (RTUs).

Water Storage Tank Fulfills Water Needs   Water Engineering & Management August 2000
A conspicuous structure with alternating red and white stripes stands in the City of Sylacauga, 45 miles southeast of Birmingham, Ala. The brightly colored, towering object is a new water storage tank, the largest to be built in the city and a crucial contribution to the city’s present water needs and future growth.

Valve Control Network Helps Bring Aging Water Plant Up to Date   Water Engineering & Management August 2000
The City of Bismark, N.D., in 1996 drafted a plan to upgrade the filter beds in its 43-year-old water treatment plant. The goal was to advance into a networked automation system that would provide up-to-date control of its filters and be easily expandable to keep pace with future automation demands.

From Eyesore to State-of-the-Art Facility: Pump Station Transformation   Water Engineering & Management August 2000   Roger Frauenfelder, P.E.
What was formerly a contaminated auto wrecking yard that twice caught fire and was an eyesore to the local community is being transformed into a state-of-the-art pump station. This transformation not only resolves critical infrastructure needs but also is aesthetically pleasing.

Controls Save Sinking Systems at Two Wastewater Treatment Plants   Water Engineering & Management July 2000
Back in 1980 when the North Buffalo (N.C.) Wastewater Treatment Plant went online with a central computer linked directly to all of its field devices, operators were excited by the newfound advantages of automation.

City of Hollywood Revises Industrial Pretreatment   Water Engineering & Management July 2000   Frederick Bloetscher, P.E., Lisa Meday-Futo, Whitifeld R. Van Cott and Robert Fergan, P.E.
The City of Hollywood (Fla.) is located in southeast Broward County, with a land area of approximately 29 square miles. However, the City is a regional wastewater service provider to areas outside the City that are termed "Large Users."

Pipe Used in Rehab of County Sewer Inceptions   Water Engineering & Management July 2000
For ten years, Hobas Pipe USA and the Los Angeles County Sanitation District (LACSD) have united to renew many of the County's 21 to 108-inch sewer interceptors.

Computer Simulation Helps Prague Modernize and Expand Sewer System   Water Engineering & Management June 2000   John E. Richardson, Ph.D., P.E., and Karel Pryl
Computer simulation is playing a critical role in helping the City of Prague in the Czech Republic modernize and expand its sewer system.

Concrete Pipe Reduces Strain on Austin’s Water Supply   Water Engineering & Management June 2000
Since 1845 when it became the capital of the state of Texas, the City of Austin’s primary focus was on government. However, in the late 1970s, the character and employment pattern of the city began to change.

Accurate Polymer Feed System Reduces Time and Cost for Sludge Dewatering   Water Engineering & Management June 2000   Tom Kruzick
High performance dry polymer mixing and feed have boosted the efficiency of a new anaerobic digestion system at the 20 mgd Oshkosh, Wis., wastewater treatment plant.

Municipality Optimizes Aeration Process By Using Unique Aspirator Combination   Water Engineering & Management May 2000
Floating and submersible aspirators have different discharge patterns that provide different capabilities in suspending solids and distributing oxygen.

Tablet Chlorination Systems Allow Plants to Meet Stricter Government/Insurance Regulations   Water Engineering & Management May 2000
The Fort Valley municipal water plant had used chlorine gas cylinders for many years. A pair of one-ton cylinders were in operation at the wastewater plant and 150-lb. cylinders at the McLeon and Jones water plants. However, new government and insurance regulations forced management to reevaluate its chlorination strategy.

Automating the Sludge Pumping/Polymer Metering Systems   Water Engineering & Management May 2000   Ted Follest
The Duffin Creek Water Pollution Control Plant (WPCP), located near Toronto, Ontario, Canada, has installed a state-of-the-art, computer controlled system to regulate polymer injection rates.

New Arsenic Treatment Technology Tested in India   Water & Wastes Digest May 2000
A new low cost technology for purifying arsenic contaminated groundwater assists the government of India in removing this slow but steady assassin from their midst.

Water Resources Management in Grand Turk - Part 2   Water Engineering & Management April 2000   Fernando Pérez Monteagudo and María Fernandez Miquel
The first part of this article traced water resources development, its quality and the demand in Grand Turk. It appeared in the March issue.

The Gray Area: The Difference Between Commercial and Industrial   Water Quality Products February 2000   Wendi Hope King
For a long time, the commercial and industrial (C&I) markets have been accepted as one sector of the water industry. Although considered different from such other markets as residential, agricultural and wastewater, there is a large murky area when being separated from each other.

Media Filters Reduce Biocide Costs at Dairy   Water Quality Products January 2000
A PEP SMF-FG-24 media filter from Process Efficiency Products, Inc., was installed on the remote sump to reduce biocide costs at the dairy.

Ozone Generator Improves Cobb Area County Water Quality   Water Quality Products November 1999
The Cobb Area County Water District of Middleton, Calif., achieved a major improvement in the district’s water quality by approximately 40 percent, from one of its major water sources—a well near one of its pumping stations.

Chicago Treatment Facilities Utilize Latest TechnologyIn Monitoring, Data Acquisition   Water & Wastes Digest October 1999
Chicago is home to the two largest water treatment plants in the world. The rigorous process followed must meet both U.S. Environmental Protection Agency and Illinois Pollution Control Board standards.

Wastewater Authority's Cogen System Uses Renewable Biogas   Water & Wastes Digest September 1999
The influx of neighboring residents, coupled with impending stringent environmental regulations, pushed the Encina Wastewater Authority to incorporate an ambitious four-phase facility improvement program. Major improvements included a $1.3 million investment to optimize the cogeneration facility.

Dealer Opportunities: Contract Operation of a Small Public & Private Water Supply   Water Quality Products June 1996   Tom W. Thorpe
A professional, highly trained, dedicated dealership can step in to satisfy the needs of the small system. But you must be willing to deal with the bureaucracy of your state's EPA enforcement agency

Ultrafiltration Basics   Water Quality Products April 1996   Lynn Cotterill
Municipal and industrial sectors are looking to new and innovative technologies to meet the demands of modern day consumers' requirements. One such technology is ultrafiltration.