DRINKING WATER

GettyImages-157742535 molecule pfas Custom Tank Designs That Actively Manage PFAS Mass Transfer Zone (MTZ) — And Why It Matters More Than Ever

As utilities prepare for the pending 4-ppt PFAS drinking water MCL, many are discovering that legacy lead/lag designs—workhorses for decades when treating contaminants in the ppm and ppb range—simply are not optimized for the parts per trillion-level (ppt) precision PFAS demands.

DRINKING WATER CASE STUDIES AND WHITE PAPERS

  • City Of Austin, Texas Installs A Total of 4,500 Pounds‐Per‐Day Of On‐ Site Hypochlorite Capacity Using the Microclor® OSHG System

    With 100 years of service history, Austin Water has seen enormous change in its 540 square miles of service area. Planning for the next 100 years has city and utility planners considering a diversity of sources, system resilience, and sustainability while being mindful of conservation goals. In the city’s newest water treatment plant, WTP4, Austin Water was able to combine those planning elements into a state‐of‐the‐art treatment plant. The plant, which is located on Lake Travis, is capable of treating 50 million gallons a day (MGD) with the ability to expand to 300 MGD.

  • Engineered For Impact: The Carbon That Stands Out In PFAS Treatment

    Filtrasorb 400’s agglomerated pore structure and high volumetric capacity deliver unmatched PFAS removal, longer run times, and lower lifecycle costs—outperforming direct-activated carbons in real-world and lab testing.

  • Hendersonville Water Treatment Plant Features Innovative Disinfection System

    Hendersonville Utility District (HUD) serves one of the most populous suburbs of Nashville, Tennessee.

  • A Pathway To Keeping Pace With AMI Technology

    The rise of advanced metering infrastructure (AMI) has been a substantial benefit to municipalities. AMI goes beyond billing data to provide deep insights into water distribution systems and offers utility managers an important tool in delivering the highest quality drinking water. However, that advancement has also generated a significant obstacle. The good news is that a cost-effective and flexible solution is available.

  • Groundwater vs. Surface Water: A Treatment Comparison

    This article will discuss two of the most common drinking water sources and how they affect treatment priorities and configurations.

  • Depths Of Druck's Experience Prevents Leaks For Water Authorities

    Druck’s Customer is a manufacturer of data logging equipment, used in the monitoring of water distribution systems. As with many of Druck’s Customers, they install sensors into the component or assembly that they in turn supply to their customer.

  • On The Job In 72 Hours Following Utility's Massive Water Main Break

    On the morning of December 12, 2017, about 30 homes in the Shelby Park neighborhood of Lousiville, KY, were without water, and others were experiencing low water pressure after a massive water main break at the intersection of Clay and Oak streets. More than 20 million gallons of water flooded the neighborhood, covering a three-block area.

  • BEACON AMA Managed Solution Helps Provide Great Water and Great Customer Service

    Situated along the Arkansas River and Lake Dardanelle in the heart of the Arkansas River Valley, Russellville, Arkansas is known for having plentiful amounts of high quality, fresh water.

  • Thrust Restraint Design Of Vertical Offsets And Tees

    There are numerous fitting combinations and configurations that are used in the everyday construction of pressurized water lines. This report describes vertical offsets, tees, and using joint restraint products to simplify their installation. The use of joint restraint products virtually eliminates thrust blocks and tie rods.

  • Ridgway WTP Saves 20-30% With Real UV254 Analyzer

    The Ridgway Water Treatment Plant (WTP) in Elk County Pennsylvania uses a Real Tech Real UV254 online analyzer to achieve a 20-30% savings in annual coagulant use in their conventional water treatment process. Beyond operational cost savings, the Real UV254 system helps the WTP consistently produce high quality drinking water for the town’s 1700 customers.

DRINKING WATER APPLICATION NOTES

DRINKING WATER PRODUCTS

The OPTIMASS 6400 is the standard high performance Coriolis mass flowmeter for the process industry. The twin bent tube meter offers superior performance and high accuracy in virtually any application: From process control in (petro)chemical applications to concentration measurements in the food and beverage industry to custody transfer filling and transport measurements in the oil and gas industry. Its high-end options also make the OPTIMASS 6400 the optimum device for cryogenic media like Liquefied Natural Gas (LNG) with temperatures down to -200°C / -328°F as well as applications involving high operating temperatures (up to 400°C / 752°F) or pressures (up to 200 barg / 2900 psig).

De Nora Water Technologies developed the direct gas-pressure chlorinator for applications where electricity, used to operate a booster pump, and water pressure, required for ejector vacuum operation, are unavailable.

The "TAF" is an easy-to-operate automatic plastic filter, with a self-cleaning mechanism driven by an electric motor. The filter is designed to work with various types of screens in filtration degrees from 500 to 10 micron.

Blue-White’s Polysulfone Flow Meters have durable meter bodies with excellent heat and chemical resistance.  Units for use in UltraPure environments are available.

HYMAX GRIP  joins and restrains a wide selection of pipes of different types and diameters, easily and reliably. Due to its patented design, it allows the joining of pipes of the same or different materials and diameters and preventing axial pipe movement.

Meet HYMAX Pro dedicated size couplings – the newest addition to the HYMAX product line, designed to join the same/differing diameter plain ends without welding and/or special pipe fittings.

LATEST INSIGHTS ON DRINKING WATER

DRINKING WATER VIDEOS

Nick Dugan is an environmental engineer working in EPA's Cincinnati laboratory. He is currently focused on bench-scale trials evaluating the impact of common drinking water treatment oxidants on intact, toxin-producing cyanobacterial cells over a range of water quality conditions.

Bluefield Research analyst, Erin Bonney Casey, presents on water reuse markets in the U.S. during the WateReuse Association's One Water Innovations Press Workshop at WEFTEC 2014 in New Orleans, Louisiana.

Water and energy are inextricably linked, yet in our 20th-century water systems we use freshwater once then throw it away. With innovations designed to enhance desalination technologies, agricultural runoff, produced water from industry, and inland brackish groundwater that are now seen as untreatable could all be sources of clean, safe, and affordable water.

IPR'S CIPP liner system for gravity-flow sewers and culverts is the most proven, cost-effective trenchless pipeline rehabilitation system in the industry. It is also the most widely specified form of trenchless pipeline rehabilitation.

In this episode of The Water Online Show: On Location, our guest is Mike Blackburn from Hach. Mike dives into the benefits of panel-mounted solutions for water quality monitoring.

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:

  1. Source water for a community’s drinking water supply
  2. Drinking water treatment of source water
  3. 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.