EPA’s Homeland Security Research Program (HSRP) aims to increase the United States’ capabilities to prepare for and respond to environmental disasters involving chemical, biological, radiological, and nuclear substances (CBRN). As part of this effort, EPA researchers develop scientific data, methods, and tools that can be used by various stakeholders, including laboratories and on-scene coordinators, to increase the effectiveness of response.
Nutrients in the environment from excess nitrogen and phosphorous can result in negative impacts on water quality. EPA is improving nutrient management by incentivizing the development of low-cost technology solutions, such as nutrient sensors, in collaboration with USGS, USDA, NIST, NOAA, and the U.S. Integrated Ocean Observing System (IOOS).
To make informed decisions about how to limit exposure to cyanotoxins, utilities need information to select and implement a comprehensive and technically sound management approach. The Water Research Foundation (WRF) has been actively involved in developing effective innovative solutions to help utilities address this challenge and protect public health.
August and September are peak months for harmful blooms of algae in western Lake Erie. This year’s outbreak covered more than 620 square miles by mid-August. These blooms, which can kill fish and pets and threaten public health, are driven mainly by agricultural pollution and increasingly warm waters due to climate change.
More public and private resources than ever are being directed to protecting and preserving aquatic ecosystems and watersheds. Whether mandated for land development, farming, or in response to the growing severity and number of natural disasters, scientists from Drexel University found evidence that decades of watershed restoration and mitigation projects have taken place, but their impact is mostly perceived.
Denver Water and engineering partners resolve major water quality challenge in crucial South Platte River exchange reservoirs.
University of Miami professors who study water treatment and civil engineering say that water contamination issues point to human error.
Recently, Denver Water’s board approved its proposed “Lead Reduction Program Plan” to fully replace the estimated 75,000 lead service lines (LSLs) in their system within 15 years. The plan is an innovative solution that will remove the primary source of lead within Denver Water’s system, while avoiding the use of orthophosphate that can further exacerbate nutrient pollution problems in rivers, streams, and oceans.
Wildfire is a natural part of many ecosystems, but recently these fires have become more severe, burning more acres and causing destruction in the western parts of the United States. Recently, U.S. EPA researchers have begun to look at the impact of these fires on our water supply, the natural resource we depend on for drinking, irrigation, fishing, and recreation.
Harmful algal blooms are a significant concern for many communities across the U.S. These blooms occur when cyanobacteria grow out of control in fresh and marine waters, often because of excess phosphorus and nitrogen from stormwater runoff and other sources such as fertilizers entering the water.
When a company stakes its reputation on delivering innovative technologies, products, and services, the specter of a changing regulatory landscape is considered more an opportunity than an obstacle. In this Water Talk interview, Mirka Wilderer, CEO of De Nora Water Technologies, discusses varying topics such as pharmaceuticals and nutrients in wastewater, the synergy of the company’s new MIOX and Neptune acquisitions, and how to address the growing concern over chlorate disinfection byproducts (DBPs) in drinking water. For example, De Nora’s new ClorTec Gen III onsite hypochlorite generators generate up to 3,000 lbs./day of chlorine-based disinfectants while reducing chlorate formation and cutting operating costs by 15 percent as compared to previously available models.
The challenges of complying with the Lead and Copper Rule (LCR) and other emerging regulations in a post-Flint world are high-priority for a variety of organizations — from government agencies, to public water systems, to individual facilities such as schools. This Water Talk discussion with Megan Glover of 120 Water Audit addresses the scope and execution of those challenges. It covers everything from providing point-of-use testing kits for sampling individual water spigots to managing overall Safe Drinking Water Act and LCR compliance through cloud-based software. Most important, it gives context to practical solutions for the many utilities and facilities coping with some level of lead exceedance.
With ever-growing demand for water resources, the reuse discussion has been building for years. More utilities are considering it, policy is being created around it, and new technologies are making it more efficient. To better understand the evolving landscape, Water Talk sat down with Brown and Caldwell's regional One Water leader, Allegra da Silva.
The U.S. EPA is gearing up to limit perchlorate in public drinking water systems, so municipalities should start preparing to adopt the appropriate testing and treatment technologies. In a recent report, the agency identified several technologies as the best available to address the perchlorate problem.
When I attended the U.S. EPA-hosted PFAS Summit held at the Horsham, PA high school auditorium on July 25, 2018, the education I received from state and municipal leaders focusing on the local problem was more than just a professional briefing. It was ominously personal, due to the fact that the Water Online editorial office where I work and drink water every day is served by a utility sitting smack-dab in the middle of one of the most concentrated PFAS hotspots in the U.S.
Material Discrimination X-ray (MDX) inspects all cartons of bone-in and boneless meats, on a single line, according to their unique specifications ensuring a safe product, maximized efficiency and product yield.
Chlorate is a highly oxidized form of chlorine that can be introduced to a water source as an industrial or agricultural contaminant or into a finished water as a disinfection byproduct (DBP). As a DBP, chlorate can result from water disinfection with bulk sodium hypochlorite, chlorine dioxide, or hypochlorite formed through electrochlorination (EC) systems.
Debate about regulating per- and polyfluoroalkyl substances is heating up across the country as the extent of known contamination continues to grow at an alarming rate. Also known as PFAS, this large group of toxic fluorinated compounds was used widely in industrial and consumer applications. Progressive water utilities are trying to quickly get a handle on the problem to better protect their customers from even further exposure.
It is no secret that a large portion of the drinking water infrastructure in the United States is near or past its intended design life. Our nation’s water infrastructure needs an overhaul, and the cost of doing so is climbing rapidly. The American Society of Civil Engineering’s 2017 Infrastructure Report Card graded the nation’s drinking water infrastructure a D. According to the American Water Works Association, an estimated $1 trillion is necessary to maintain and expand drinking water service to meet demands over the next 25 years.
Blades, Delaware, a small town in Sussex County, provides drinking water to more than 1,300 residential and business locations throughout the community. In 1981, the citizens of Blades voted to improve their water and sewage facilities by establishing a central water supply and tying all properties into the nearby Seaford Sewer System. By February of 1982, the project was complete and since then the town has had a clean and safe municipal water supply.
Without awareness of viable rental options for blowers or compressors, some food and beverage operations have been resigned to accepting downtime due to blower failure as inevitable. Now, with variable-frequency-drive (VFD)-controlled blowers available for rent as self-contained, skid-mounted systems, there’s no longer a need to tolerate unexpected, costly downtime or disruptions to ongoing operations.
The X3735 x-ray system is a high detection sensitivity solution, with an integrated conveyor designed to inspect tall, rigid packaged products in a wide range of applications.
When water and wastewater plant operators can’t get accurate flow measurements or analytical readings — or lack confidence in their instruments’ readings — it creates challenges with the process. When substandard water goes to homes and causes a boil order, or discharge pollutes a lake or reservoir, the resulting bad press, fines, and potential lawsuits erode public confidence. Avoiding these kinds of problems is rooted in good preventive maintenance habits.
As fresh water supplies dwindle, search for “new water” increases, and regulations become more stringent, reverse osmosis systems have gained popularity among utilities. Their ability to treat brackish or salty water and to remove numerous contaminants provide opportunities to treat lower quality waters or reclaim treated effluent. Most concerns about reverse osmosis relate to high costs, concentrate management, and low recovery rates.
Wastewater plants treat effluent with chlorine as a final disinfection measure prior to its discharge into the environment. While this should be straightforward, there are still a significant number of small water systems facing big problems because they don’t have a solid grasp on the process. The good news is that a modern, cost-effective solution is available.
The Canadian crop sabotage crisis first arose when an undisclosed number of needles were found in potatoes. Fortunately, manufacturers can use x-ray technology to inspect whole potatoes for contaminants such as golf balls, rocks, stones and needles at the beginning of the production line before further processing to guarantee safety and quality.
The Leopold Type 360 Underdrain uses a modular lateral design to simplify installation. Unique hold-down brackets secure the laterals and enable service to individual underdrains through its innovative bolt down system.
Trojan Technologies has been providing treatment solutions for the water/wastewater market for four decades, but 2018 stands out as the year Stephen Bell joined as its new president. Water Online had opportunity to catch up with Bell at WEFTEC, where he talked about the company's culture, philosophy, and drive to innovate. One particular innovation is the TrojanUVFlex, a drinking water disinfection and advanced oxidation system for both potable and non-potable reuse applications, as well as the destruction of chemicals such as 1,4-dioxane. Tune in for an introduction to Bell and a summary of Trojan's unique technology.
The City of Paramount conducted a pilot study for arsenic, manganese and iron treatment system at their Well 15 site. The onsite pilot test was designed to demonstrate the performance of the Loprest Water Treatment Company treatment process proposed for the new treatment plant.
How a Leading Product Lifecycle Management Software Developer Transforms Pirates into Paying Customers.
Arsenic (As) is a naturally occurring element that can be found at elevated concentrations in groundwater aquifers beneath Argentina, Bangladesh, Chile, China, India, Mexico, and the United States, per a 2018 World Health Organization (WHO) report (WHO, 2018). WHO estimates that at least 140 million people in 50 countries have been exposed to drinking water containing arsenic concentrations above the WHO recommended safe limit and U.S. Environmental Protection Agency (EPA) Maximum Contaminant Level (MCL) of 10 micrograms per liter (μg/L) (MassDEP, 2019).
You’re in the business to offer exceptional service and help your clients operate smoothly. Effectively managing every ticket for every client issue can be time consuming and tough—especially without the proper best practices in place to help.
The particle size of activated carbon affects how any POU treatment system will perform. The smaller the particle size of the activated carbon, the faster the rate of removal, whether by adsorption or chemical reaction, because the contaminant has less distance to go to reach the pores in the center of the activated carbon particle. The faster the rate of adsorption, the better the POU system will perform. To illustrate the particle size effect on performance, let’s look at how an 8×30 mesh activated carbon resized to a 12×40, 20×40 and 20×50 mesh performs in a de-chlorination study.