San Francisco is trying a new recipe for tap water.
Georgia scored a critical court victory in the latest round of its lengthy water war with Florida.
New data released by NASA shows that parts of California are sinking rapidly, and state water managers say groundwater over-pumping must be restricted to protect aqueducts and flood control structures.
As climate change continues to advance, some are wondering whether our wastewater systems are equipped to handle the future.
Arizona is taking steps toward allowing direct potable reuse (DPR) as the state works to confront its pressing water-supply challenges.
A major consequence of the California drought is that the state may become more reliant on brackish-water desalination.
The San Antonio Water System (SAWS) unveiled the second-largest desalination plant in Texas at the end of January.
As California gets soaked in rain, water utilities are lobbying state officials to lift regulations — a move that would likely benefit water suppliers across the state.
It’s raining in California. Is the drought over?
Water managers say underground water storage is vital as California and other drought-plagued areas seek to capitalize on rain when it comes.
As 80 percent of California continues to languish in drought conditions, state regulators are a step closer to allowing the practice of direct potable reuse (DPR).
Officials in Austin are undertaking a major review of how customers pay for water.
As the Obama years come to an end, administration officials are working to support the controversial California tunnel proposal as one of their acts in office.
The dry spell in Tennessee has utility officials looking for ways to secure their supplies in case the conditions persist.
Collectively in the municipal wastewater treatment industry there exists a tremendous knowledge base. Among those who are actively engaging in the trade, a resource of innovative skill sets is potentially accessible through many of the individuals’ experiences and discoveries. The challenge is: How can these people work together effectively to benefit from this state-of-the-art resource?
The vast majority of chain and flight collectors in operation throughout the world do not have any form of monitoring system installed to protect against operational failure. Traditional safety devices consist of a shear pin sprocket device, with a limit switch, designed to protect the drive system if a load or torque exceeds the working load of the drive chain; in the event that this occurs, the shear pin will break, the limit switch will be activated, and the drive motor is shut down. This process will typically protect the drive chain and drive motor from failure. When the shear pin breaks, the clarifier is drained, the cause of the overload is established and corrected, a new shear pin is installed, and the collector is placed back in operation.
The process of aeration is used to mix, circulate, or dissolve air into a liquid or another substance. Mechanical aeration can reduce the amount of chemicals needed to treat a body of water by providing the oxygen that bacteria need to function properly. There are two common types of water aeration: subsurface and surface. Although subsurface aeration comes to mind first in discussions of wastewater treatment, surface aeration plays an equally important role in oxygenating liquids.
The nearly 16,000 people in Calhoun, GA, rely on two drinking water treatment facilities — one that pulls its water from a river and another that pulls from groundwater — that process about 9 MGD. The turbidity of the river’s water can fluctuate dramatically, so the operators rely on the surface water treatment plant’s turbidity analyzers to ensure that they are serving the population as they should.
Helping to maintain clean water is part of the Whalen family history, a story that begins in the mid-1990s with a father’s fervent belief that his research could make a difference and his son’s intense desire to ensure it did.
When it comes to disinfection at treatment plants, chlorine has quite the reputation. To some, it’s known as a reliable and trusted solution. To many others, especially among the public at large, it’s looked at with skepticism and concern – but that may be simply a matter of not knowing the facts. Either way, it’s one of the ubiquitous aspects of water and wastewater disinfection… and for good reason.
As some of you may have heard, LuminUltra has partnered with Microbe Detectives to offer DNA testing services to the drinking water and wastewater industries. So “Who’s on First?” (pun intended); simply put, the partnership’s combined technologies tell you who is in a given water or wastewater sample, and how much is in that sample.
Several treatment processes can be used to remove iron and manganese from ground water for potable water supplies. Iron and manganese are typically found in groundwater in a dissolved state and appear clear. While there are various less common treatment methods used (such as ion exchange and ultra-filtration), most treatment systems for iron and manganese oxidize the ferrous state of iron to a ferric state so the solid particles can then be filtered out.
Melaka is a relatively small state on the southwest side of the Malay Peninsula with a city so rich in history and beauty that it is listed as a UNESCO World Heritage site. With a population around 850,000, the Melaka Water Company Ltd. (SAMB) manages roughly 270,000 service connections for commercial and residential customers.
As utilities update their metering to automatic meter reading (AMR) or advanced metering infrastructure (AMI) systems, integration with measurement devices in the distribution system has many benefits. McCrometer’s Dan Hardin recently sat down with Water Online Radio to discuss the flow measurement company’s Smart Output protocol that allows mag meters to connect to a water district’s AMI/AMR system.
When I speak to communities about water quality issues, people often think the problem only happens in the developing world. Although America’s drinking water remains among the safest in the world, we are facing a serious and growing problem at home in the U.S.
To minimize losses and address mounting concerns, the water industry is now adopting advanced sensor and communications solutions designed specifically for “smart” Internet of Things (IoT) water management. In large part, the move toward implementing smart water solutions is being driven by stricter government compliance requirements, the evolution of smart cities, and the need for water conservation.
In the Himalayan mountains, irrigation can be a challenge. There are few affordable pumping technologies accessible for poor farmers, and they come with high maintenance costs.
When snow arrives in the mountains, winter sports enthusiasts get excited. And, farmers “down country” get excited, too, but not for all the same reasons.
There’s roughly 32 billion gallons of municipal wastewater produced every day in the U.S., but according to a 2012 water reuse report by the U.S. EPA, less than 10 percent of that water is recycled.
The Global Cleantech 100 identifies nine innovative water/wastewater technologies set to make significant market impact in the next decade.
In a recent column, Water Online Associate Editor Peter Chawaga wrote about a new plan for drinking water safety in the Trump era. In part, he references a late-2016 U.S. EPA Call to Action to improve the safety and reliability of the nation's drinking water.
On a warm December day, I stood in a jojoba field in the Negev Desert in southern Israel and watched water slowly seep up from the ground around the trees. First a tiny spot, then spreading, watering the plants from deep below. This highly efficient system is known as drip irrigation, and I was there to meet with the world’s leading drip irrigation company, Israel-based Netafim.
Farmers in Uganda and in developing countries around the world are facing major energy and waste management issues. There are anaerobic digestions systems to help farmers manage agricultural waste from plants and animals, but there’s a problem.
For centuries, scientists believed that silicon — an element that accounts for nearly 28 percent of the earth’s crust — had little to do with life-sustaining processes in animal and plants. But in the last couple of decades, science has begun to recognize something new: Silicon can reduce the effects of various stressors on plants, including water stress. This ubiquitous, but overlooked, mineral could be the key to more resilient crops worldwide.
When is the last time you took a moment to stop, and smell your water? A continuous supply of clean and safe drinking water is something that most people take for granted. We rarely go to the tap doubting that the water will be clean and safe. Recently, the general population and water supply professionals have become concerned about the safety and protection of our drinking water supplies.
Chemical, petrochemical, and oil-reﬁning plants are process-intensive operations with regulatory requirements to protect the surrounding water and air from the effects of industrial pollution. These external demands are matched by equally compelling internal pressures to address product puriﬁcation needs, ﬁnd alternatives to utilizing costly fresh water in production processes, reduce the carbon footprint, and operate efficiently and proﬁtably.
We all hope that the Flint Water Crisis – where cost-cutting measures led to the drinking water supply to become severely tainted with lead – was an isolated incident. However, it is not impossible that a similar event could happen again, especially in a similarly desperate city with limited financial resources. Here are a few key points that should be considered to avoid repeating such a tragedy.
When Flint Michigan discontinued purchasing water from the Detroit Water Authority and began using the Flint River as their raw water source they unfortunately did not consider the potential impact on lead and copper corrosion and the impact on the public.
For water treatment operators and utility officials, the summer months don’t just mean sunshine, pool parties, and barbecues. The season also brings the peak time for algal blooms, the toxic clouds formed in surface water thanks to increased nutrient contamination and rising temperatures. With rising instances of toxic algae around the country and increased regulations for eliminating it, utilities have had to keep pace.
The U.S. EPA’s Long Term 2 Enhanced Surface Water Treatment Rule (LT2) was adopted in 2006 to modify the Safe Drinking Water Act and more tightly control the spread of Cryptosporidium, a microorganism that can cause gastrointestinal infection if ingested. Since its inception, the rule has posed a treatment challenge to utilities that are susceptible to the tiny contaminant. But which utilities are at risk? And how should they approach treatment?