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.
You might say that there’s a lot wrong with the water industry — problems including infrastructure, financing, and scarcity — but there’s also a lot going right. In this Q&A, Water Environment Federation (WEF) President Rick Warner is a source of insight and optimism.
“Water Champion” Paula Kehoe looks to do for the nation what she did for San Francisco — to greatly expand water reuse opportunities and implementation. In this Q&A, she discusses her new role as chair of a national commission for onsite non-potable reuse, the San Francisco model, and the best practices and obstacles for sustainable water operations.
The Global Cleantech 100 identifies nine innovative water/wastewater technologies set to make significant market impact in the next decade.
It’s a buzzword for the industry, but what does it really entail?
Are environmental interests and business interests mutually exclusive? Our divisive sociopolitical climate might make you think so — you’re either labeled ‘tree-hugging’ or ‘greedy’ — but it is not an either/or proposition, especially when it comes to water conservation.
Yes, America cleaned up at the Olympics this summer, but how does the U.S. fare on the world stage when it comes to water resiliency, efficiency, and quality?
A water technology expert tackles high-profile and important topics currently affecting municipalities, industry, and the community at large.
There are a lot of technology startups in the water space vying for attention, including a good bit in the New England area alone, but one Massachusetts company and its potentially "disruptive innovation" stands apart.
Survey data on U.S. consumers’ attitudes toward public drinking water confirms tough times now, but hints at better days ahead.
This year's Annual Conference and Exposition (ACE16), held by the American Water Works Association (AWWA) from June 19 to 22, was the first following the tragedy of Flint — a time when the drinking water industry is under intense scrutiny.
Potable reuse of wastewater has gone by many different names, some of them unflattering, like “toilet to tap.” Despite the clear benefits of water reuse, this so-called “ick factor” has slowed the adoption of technology that can transform wastewater into drinking water.
Probability of detection (POD) seems like a relatively simple number which vendors use to reassure potential customers of a machine’s capabilities for contaminant detection. However, there is more to the numeric value of POD than just taking it for face value. This white paper explains how POD is calculated and why 100% POD is unachievable and it also looks at factors that affect sensitivity of contamination detection while lastly discussing how the latest innovations in x-ray inspection technology are designed to enhance detection performance, while explaining how food processors can ensure POD is consistent throughout the lifetime of their x-ray system.
Effective control of the microbiological environment in water distribution systems is one of the biggest keys to providing a healthy product. When it comes to processes for achieving this, the U.S. can some take lessons from Europe, where utilities are more likely to monitor temperature. Advanced flow metering technology that incorporates temperature monitoring provides a significant tool for utilities without the need for additional instruments.
The advanced oxidation process removes contaminants in water and wastewater by oxidation through reactions with highly reactive hydroxyl radicals (.OH). This chemical process uses ozone (O3), hydrogen peroxide (H2O2), and/or UV light.
Are “ghost forests” a sign of things to come? Rising sea levels and superstorm tidal surges are already impacting coastal areas, with rising salinity levels affecting some drinking water sources. Coastal water utilities are not the only ones that have to worry about salinity, however, as high concentrations of winter storm road treatments, gas drilling, and mining can also generate elevated salinity levels in surface water sources.
Pneumatic conveying is an effective form of moving dry materials in food manufacturing. However, the long lengths of conveying pipe present challenges in terms of addressing cleanliness and sanitation.
Almond harvesting runs the risk of including foreign objects in processing lines. Implementing an effective inspection system is critical to brand protection, food safety, and bottom-line efficiency.
The water industry has made progress in developing numerical values for screen-capture ratings under specific conditions. One such example is the UK Water Industry Research (UK WIR) standard. Its methodology is sound in measuring capture rate for a specific screen in a channel for a specific time and set of conditions. However, the measurements provided in these studies cannot be assumed to represent the performance of that screen in any other wastewater treatment plant or even in the same channel in a different time or season.
Nature has long provided guidance to simple and sustainable ways to manage environmental challenges. Biological treatment of potable water is no exception. As more water is required to support human activity worldwide, sources once considered too contaminated or expensive to treat are quickly becoming necessary options. For groundwater contaminant removal, once again, the laws of nature point the way.
Efficiently managing potable water treatment and distribution or wastewater collection and treatment involves many moving components, not the least of which are cost implications. If only there was a way to quantify and analyze those factors to leverage them for better decision-making. There are, and they reach far beyond tactical treatment plant adjustments, all the way up to strategic decisions as well.
A large municipal water utility in the southwest operates multiple facilities that provide more than 170 MGD of drinking water to residents and businesses. The utility, which spans 100 square miles, is prone to leaky pipes because parts of its distribution system have been in place for nearly a century. Also known as non-revenue water, or NRW, these leaks significantly drive up the cost of production.
X-ray inspection of beef jerky presents many, and often unforeseen, challenges. This application note provides guidance to overcome those challenges to produce high-quality beef jerky.
When you think about areas of the world where people have limited access to clean water, I’m guessing hot, sunny, arid climates come to mind. In an interesting twist, a couple of innovations are using those exact conditions to create potable water.
Published five years ago, The Founder’s Dilemma has quickly become essential reading for aspiring entrepreneurs. At the heart of the book’s intrigue is the initially surprising statistic that less than one-quarter of founders are still at the helm when their company goes public. How does that account for influential and powerful Founder/CEOs that loom over nearly every industry? What about Jeff Bezos? And Steve Jobs? What about Phil Knight or Howard Schultz?
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.
Now is the time to bring a location perspective to field operations activities. Achieving greater coordination between the field and the office yields operational efficiency and creates new opportunities.
Chemical dosing for disinfection in the drinking water treatment process can be an expensive and tedious task. Many municipalities struggle to keep down the cost of chemicals, power, and maintenance while devoting an extensive amount of labor to making hourly checks. However, there is an alternative that is both effective and economical.
The good news about extending water service connections is that they represent new revenue opportunities. The bad news is that they can be costly and disruptive in terms of having to shut down the system and open it up. Before planning new service connections or extensions, compare how the following characteristics of hot-tapping with fabricated tapping sleeves can save both time and money in the long run.
Industrial operations across the gamut leverage boiler water, the liquid that passes through a boiler and is converted into steam, thus powering operations around the world. But not all of them do as much as they could to ensure peak boiler water efficiency. Through the proper treatment considerations and quality measurement knowledge, every industrial player can make the most of this central process.