DRINKING WATER
Understanding Ultrapure Water, Difficulties With pH Measurement
By gaining insights into the diverse types of pH measuring analyzers and sensors, companies can make informed decisions to enhance their UPW management strategies and drive operational excellence.
DRINKING WATER CASE STUDIES AND WHITE PAPERS
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![DuctileIronPipe]( "The Design Decision Model® Reveals Longevity Of Ductile Iron Pipe")
The Design Decision Model® Reveals Longevity Of Ductile Iron PipeEarlier this year, Maury D. Gaston, manager of Marketing Services for AMERICAN Ductile Iron Pipe and chairman of the Alabama Iron and Steel Council, presented at the 2019 NACE Corrosion Conference on Metallized Arc-Sprayed Zinc Coated Ductile Iron Pipe.
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![aquaknight-update]( "Introducing AquaKnight: Revolutionizing Water Filtration For A Cleaner And Safer Tomorrow")
Introducing AquaKnight: Revolutionizing Water Filtration For A Cleaner And Safer TomorrowIn a world where access to clean and safe water is increasingly vital, AquaKnight emerges as the steadfast guardian of clean drinking water in the ongoing battle against PFAS.
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![AMERICAN Ingenuity Delivers Massive Pipe, Fittings To Replenish Shrinking Water Supplies In Arkansas]( "AMERICAN Ingenuity Delivers Massive Pipe, Fittings To Replenish Shrinking Water Supplies In Arkansas")
AMERICAN Ingenuity Delivers Massive Pipe, Fittings To Replenish Shrinking Water Supplies In ArkansasThe Mississippi River Valley Alluvial Aquifer — a primary water source for small towns, rural water systems and farm irrigation in eastern Arkansas — is running dry. According to the Army Corps of Engineers’ website, a project study in the mid-1980s pointed out, and further studies have since shown, the region’s groundwater resources are rapidly shrinking.
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Identifying And Estimating The Value Of SCADA And Smart Metering Systems In Water Distribution Networks
Considering the invaluable service provided to the society by the water companies, it is imperative to ensure their sustainability. To achieve this objective, these organizations must be allowed to fulfill their mission with effectiveness and efficiency. Information and communication technologies are especially important tools in this pursuit of enhanced performance.
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![BPAFree]( "Simplified Testing For BPA In Source Water")
Simplified Testing For BPA In Source WaterTesting for BPAs that may have found their way into drinking water sources has traditionally been cumbersome and expensive, so municipalities could be exposing their customers to unsafe levels. The good news is that newer advancements are making it easier to use existing technologies to monitor for the pollutant.
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Long-Term Performance And Boron Rejection Of LG SWRO Membranes In Malta Desalination Plants
Malta is an archipelago of three islands situated in the Mediterranean Sea, around fifty miles south of Sicily. There are no rivers of any significance on the islands, and the sparse annual rainfall is only about 500 mm. In order to bridge the gap between supply and demand, Malta has long ago started desalination of seawater. The technologies were initially based on evaporation. In 1981 the Government decided to invest in RO desalination capacity.
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The Challenge Of Flow Disturbances On Meter Accuracy
Accurately measuring flow is critical for water utility operations. Also, regulatory agencies mandate flow monitoring and require annual calibration of meters. But even a meter in perfect condition and properly calibrated can read inaccurately. Flow disturbances are a common cause of accuracy and repeatability errors.
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![1395075449-analytical-thinking]( "Water Quality: Why Analytical Thinking Has Never Been More Important")
Water Quality: Why Analytical Thinking Has Never Been More ImportantIn an era of increased scrutiny for delivering efficient and sustainable industrial practices, the maxim “you can’t manage what you don’t measure” is well known to anyone, particularly those whose daily role revolves around monitoring and improving water quality.
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![asheville]( "Insta-Valve 250 Keeps Hospital's Water On During Emergency Line Repair")
Insta-Valve 250 Keeps Hospital's Water On During Emergency Line RepairHydra-Stop's insertion valve provided targeted control to allow for the removal and replacement of a cracked pipe without affecting service to a hospital.
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![Monochloramine Monitoring]( "Monochloramine Monitoring – Reliable Analysis, Safer Drinking Water")
Monochloramine Monitoring – Reliable Analysis, Safer Drinking WaterThe Safe Drinking Water Act (SDWA), enacted in 1974, is the main federal law that ensures the quality of Americans' drinking water. Under SDWA, EPA sets standards for drinking water quality and oversees the states, localities, and water suppliers who implement those standards. The law was amended in 1986 & 1996 requiring many actions to protect drinking water and its sources.
DRINKING WATER APPLICATION NOTES
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TOC Monitoring In Process Return Condensate4/23/2021
Industrial power plants or co-generation power plants utilize steam for industrial purposes other than power production.
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LC-MS Analysis Of 33 PFAS Compounds In 5 Minutes11/4/2021
In response to environmental testing demands for faster LC-MS analyses, the new Ascentis® Express PFAS HPLC and delay columns allow the highly efficient separation of 33 PFAS compounds in 5 minutes with reduced background contamination.
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Municipal Real-Time Water Quality Monitoring9/24/2020
We arm municipalities with actionable data necessary to make informed decisions about water quality in their communities
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Dosing Of Sodium Hypochlorite Solution For Drinking Water Disinfection9/22/2022
A water purveyor was in urgent need of a chemically resistant flow instrumentation with a long life of service that allowed reliable and long-term stable dosing of the sodium hypochlorite solution.
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Ion Exchange Resins Reduce Pollution From Refineries12/23/2013
A single operational oil and gas refinery produces millions of gallons of contaminated wastewater a year, leading to environmental pollution concerns. Ion exchange resins are a metal- and ion-removal solution to help clean this wastewater for plant reuse or safe disposal. This application guide explains how resins can be used to demineralize refinery water in process, boiler, and cooling water applications.
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Protection Of Membrane Systems Utilized For Municipal Water12/1/2020
As water scarcity issues around the world become more acute, more municipalities are having to turn to alternative water sources for potable water supplies. Also, many municipalities in coastal areas are seeing the quality of their water sources degrade as sea water intrusion occurs.
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Determination Of EN15662:2008 - Determination Of Pesticide Residue In Food Of Plant Origin, By An Automated QuEChERS Solution9/24/2014
Pesticide residue laboratories are required to undertake analyses of an ever increasing number of samples. The analyses typically involve use of multi-residue methods (both GC-MS and LC-MS) to test for over 500 pesticide residues.
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Accurately Measuring Network Leakage6/26/2015
The pressures of supplying a growing global population mean that the world’s water supplies need to be managed more closely than ever.
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Application Bulletin: Reverse Osmosis3/19/2008
Osmosis is the phenomenon of lower dissolved solids in water passing through a semi-permeable membrane into higher dissolved solids water until a near equilibrium is reached
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Alcoholic Beverage Fusel Alcohol Testing With Static Headspace9/2/2014
A static headspace method was developed using Teledyne Tekmar automated headspace vial samplers to meet the method requirements of the Alcohol and Tobacco Tax and Trade Bureau of the US Department of the Treasury (TTB) method SSD: TM:2001 for testing fusel alcohols in alcoholic beverages.
DRINKING WATER PRODUCTS
The electromagnetic signal converter IFC 050 is a perfect choice for measuring volumetric flow in various kinds of applications in the water industry but also in the food and beverage business.
Electronic ultrasonic cold water meter for measurement of cold water consumption in households, multi-unit buildings and industry.
For large camps with populations expected to exceed 2,000 people, newterra’s modular PWT-500 Potable Water Treatment Large Train System employs 40' containers dedicated to a specific, complimentary treatment process (e.g. greensand filtration, nanofiltration, etc.)
Multiport Relief Valve Springs cannot be compressed solid nor can the valve be locked closed by external adjustment. When springs are compressed to a maximum point by handwheel adjustment, the valve discs will open upon overpressure. Operating components are internal to the valve, which precludes tampering.
Learn about KROHNE's ultrasonic clamp-on flowmeter for temporary flow measurement of liquids.
Liquid, slurry, or solids measurements? Dirty applications? These maintenance-free sensors deliver the reliable performance you need, no matter what the environment.
LATEST INSIGHTS ON DRINKING WATER
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![World in a water drop-GettyImages-125143821]( "Protecting Our Planet Daily: Water And Wastewater Technologies At The Forefront Of Sustainability")
Water Online spoke with Teresa Ortigosa, Global Sustainability Director at Veolia Water Technologies, to get her thoughts on the planet's biggest environmental threats, recommended practices to make us more sustainable, and some technology solutions to help enable the transition. -
![aquaknight background]( "AquaKnight FAQ")
Calgon Carbon has been implementing high-performing adsorption equipment for over 35 years and has developed expertise in design, manufacture, and utilization of activated carbon solutions. These solutions offer customers the lowest total cost of ownership along with superior performance, ease of carbon changeouts, and the ability to treat to very low levels.
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![Stop dangerous PFAS-GettyImages-1492286980]( "New Water Quality Standards Will Result In Billions Being Spent To Remediate PFAS Contamination")
Recently, the U.S. EPA announced long-awaited water quality standards outlining the maximum contaminant levels for PFAS contaminants in drinking water. This marks the first time national standards for a new contaminant have been added to the Safe Drinking Water Act since 1996. It represents, without doubt, an ominous alert that should be noted. -
![faucet_Getty-855532396]( "Removing PFAS From Public Water Systems Will Cost Billions And Take Time — Here Are Ways You Can Filter Out Harmful 'Forever Chemicals' At Home")
My team at the University of Notre Dame works on solving problems involving contaminants in water systems, including PFAS. We explore new technologies to remove PFAS from drinking water and to handle the PFAS waste. Here’s a glimpse of the magnitude of the challenge and ways you can reduce PFAS in your own drinking water.
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![tanks wastewater treatment facility-GettyImages-1332378404]( "6 Steps To Complying With New PFAS Drinking Water Regulations")
In April 2024, the U.S. EPA released regulations for PFAS limits in municipal drinking water, greatly impacting municipalities and the water industry as a whole. There are several steps that can be taken to successfully navigate the upcoming regulations. -
![HyperionRendering]( "Advancing Water Reuse In The U.S.: States Develop Potable Reuse Regulations")
In several U.S. states, government agencies and utilities are exploring how to treat wastewater properly so it can be used for drinking water — what we know as potable water reuse. While potable reuse is not a new concept, it's being pursued more aggressively with renewed support and new ideas as we see limits with existing water sources.
DRINKING WATER VIDEOS
Appearing on The Weather Channel's "Wake Up With Al" morning show, water expert Dan Theobald puts drinking water to the test by measuring total dissolved solids (TDS) in tap water samples from Brooklyn, Manhattan, and New Jersey, as well as bottled water samples.
ABOUT DRINKING WATER
In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA).
Drinking water considerations can be divided into three core areas of concern:
- Source water for a community’s drinking water supply
- Drinking water treatment of source water
- Distribution of treated drinking water to consumers
Drinking Water Sources
Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater.
Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.
Drinking Water Treatment
Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.
There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.
The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.
The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.
During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.
Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.
Drinking Water Distribution
Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.
A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.
Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.