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.
While septic systems are a viable and undeniably popular choice for wastewater treatment, they are ultimately only as reliable as their upkeep. Can we trust the technology and the human element to protect our waterways from pollution, or is it time to search for better solutions?
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.
Spectrophotometry is a well-established analytical method, which has been used for decades in chemistry, physics, biochemistry, and chemical engineering for quantitative analyses.
Industrial and population growth continue to outpace the supply of freshwater resources in many regions of the world. The need for additional freshwater resources is driving the need for desalination. When combined with concerns regarding climate change and harmful impacts associated with fossil fuels, desalination powered by renewable energy should be considered as a necessary part of the solution.
In water testing, readings that we believe to be reliable indicators are not always what they seem. Water that exhibits certain chemical or electrical characteristics at laboratory temperatures can provide entirely different readings in the field. Here is a quick review of what to look for in common water tests and why to consider automatic temperature compensation in the instruments used to collect them.
In the field of cell and gene therapy, there are two main types of viral vectors: adeno associated virus (AAV) and Lentivirus (LV). The manufacture of these vectors is dependent on the regulatory requirements dictated by its end use. This blog outlines the challenges for optimization of scaled-up LV manufacturing processes and new technologies being used to solve these challenges.
From the largest metropolitan utilities to the smallest water systems, leaks are a problem everywhere. Because it’s difficult to raise consumer prices to offset the losses, non-revenue water has a direct impact on the bottom line of municipal water systems. However, utility managers now have an opportunity to reverse the problem with advanced flow meter technology that combines multiple measurements.
Several advancements in solar technology may provide the answer to drinking water production in distressed regions of the world.
The City of Riverdale was running into issues with arsenic, color and iron treatment system at their Well 4 site, so they conducted a pilot test with the help of Loprest.
Innovation is vital in the water industry and continually moving ahead is a must — even if the company you're trying to surpass is your own. By listening to a wide range of customers and distribution chain partners, Mazzei Injector Company upgraded its revolutionary Pipeline Flash Reactor (PFR) and introduced it to the marketplace with great impact.
All the effort and expense required to produce high-quality water can be for naught if the distribution system cannot maintain appropriate pressure to deliver it efficiently, at a reliable flow rate. Simply pumping more pressure into the system is not the answer. Learn how new pressure monitoring options make it easier to track pressure in every zone to deliver customer satisfaction at peak energy efficiency.
Protecting the public health and ensuring water is safe to drink is the highest goal of water system managers. Negative health effects are indicated from exposure to per- and polyfluoroalkyl substances (PFAS), such as perfluorooctanoic acid (PFOA) and perfluorooctyl sulfonate (PFOS). Based on lab studies, the U.S. EPA has issued a health advisory for PFOA and PFOS in drinking water of 70 parts per trillion. While health advisories are not enforceable, they offer a margin of safety for consumers.
The stated mandate of regulatory authorities (e.g. the FDA) and pharmacopeias (e.g. USP) is to establish and monitor safety, efficacy, and quality of manufactured drug products. This article examines the role of those authorities on quality during production processes.
Providing safe drinking water is a growing challenge. While methods for the disinfection of bacteria, protozoa and viruses in drinking water are well established, there are certain chemical contaminants of concern resistant to traditional water treatment methods which are being detected in drinking water, and many have the potential to impact public health.
In water and wastewater operations, optimizing energy use plays a huge role in cost efficiency, but how can you know if pumping equipment and other motors are running as efficiently as possible? Analytics systems that interpret performance from a variety of data points — pump curves, run time, flow rates, vibration, temperature, energy consumption, etc. — can quantify pump operation to keep performance efficiency on an upward track.
The quality of drinking water is regulated by a variety of guidelines, such as the EU Council Directive 98/831,2 and WHO guideline. The key principles used to define these limits consider both health hazards and sensory and technical reasons. Iron, for example, does not exhibit a risk for health in concentrations usually found in drinking water.
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.
You may have read recently that Orange County Water District (OCWD) and Orange County Sanitation District (OCSD) set a Guinness World Record for the most wastewater recycled to drinking water in 24 hours. The record attempt kicked off on February 15th 2018 to mark the 10th anniversary since the districts’ Groundwater Replenishment System was launched and culminated with more than 100 million gallons per day (MGD) being produced.
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.
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.
Ozone disinfection has long been a critical process in the wastewater treatment industry. And, because ozone is relied on so heavily to oxidize a wide variety of potential wastewater contaminants, water quality analysis during the disinfection process is paramount. Once the ozone process itself is understood, its water quality ramifications and the quality parameters that offer insight into its efficacy can be analyzed and taken into account.