Mixing drinking water with chlorine, the United States’ most common method of disinfecting drinking water, creates previously unidentified toxic byproducts, says Carsten Prasse from Johns Hopkins University and his collaborators from the University of California, Berkeley and Switzerland.
“There’s no doubt that chlorine is beneficial; chlorination has saved millions of lives worldwide from diseases such as typhoid and cholera since its arrival in the early 20th century,” says Prasse, an assistant professor of Environmental Health and Engineering at The Johns Hopkins University and the paper’s lead author.
https://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.png00Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2020-01-29 09:05:502020-01-29 09:05:50What’s in Your Water? Researchers Identify New Toxic Byproducts of Disinfecting Drinking Water
You may hear the word “sustainability” used a lot when talking about climate change, but what about “resilience?” KVCR’s Benjamin Purper spoke with the authors of the new book “Building a Resilient Tomorrow: How to Prepare for the Coming Climate Disruption” about what it means to be resilient in the face of climate change.
Authors Alice Hill and Leonardo Martinez-Diaz both served as senior officials in the Obama Administration working on climate change issues. Their new book discusses climate resilience.
https://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.png00Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2020-01-29 09:01:552020-01-29 09:01:55“Building a Resilient Tomorrow” Authors on Climate Change and Resilience
Turning on the tap may seem harmless, but communities throughout the San Joaquin Valley are seeing unhealthy levels of toxins turn up in the water.
Kingsburg City Leaders say most residents could not tell anything was wrong with the drinking water, but years of testing showed unregulated chemicals were found.
“It’s not a sight or a taste or a smell thing,’ says Kingsburg City Manager Alex Henderson. “What it is is that we have to test for a number of chemicals and have for a very long time.”
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Division 2 and Division 4 on the Imperial Irrigation Board are two of the toughest races candidates are facing in the county’s primary.
In public forum moderated by Imperial Valley College students, residents wanted to hear how candidates plan to protect the valley’s land and water rights.
Division 2 incumbent, Bruce Kuhn talked about how he has been fighting to protect the valley’s resources from stakeholders in the Coachella district.
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The Del Mar bluffs have been plagued by a series of collapses over the last 18 months that have left residents and officials increasingly concerned about the stability of the busy railroad tracks perched atop the cliffs.
Top transportation officials are now gearing up for the largest bluff stabilization effort in nearly a decade. The San Diego Assn. of Governments and North County Transit District have already dedicated roughly $10 million to repair storm water drainage structures, replace parts of sea walls and install additional steel and concrete support columns to hold back the earth.
https://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.png00Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2020-01-29 08:49:342020-01-29 08:49:34To Prevent Rail Line Collapse, San Diego Area Spends $10 Million To Repair Del Mar Bluffs
SAN DIEGO — San Diego sharply reduced the number of water main breaks and sewer spills across the city last year, saving ratepayers money and helping many neighborhoods avoid significant disruptions.
City officials credited the decreases to ramped-up maintenance and replacement efforts on water mains, sewer lines and pipes, particularly those made of cast iron.
And to further reduce breaks and spills, San Diego officials say they will soon begin using drones and other monitoring devices to look for early warning signs of potential problems.
https://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.png00Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2020-01-28 23:49:202020-01-31 14:50:54San Diego Plans to Use Drones, Monitors to Reduce Water Main Breaks, Sewer Spills
A new pipeline inspection tool being used by contractors working for the Vallecitos Water District to determine pipeline integrity could become a standard tool saving time and money.
After nearly completing construction in 2008, developers walked away from the 500-acre High Point subdivision in the City of Escondido. Water facilities installed for the subdivision were left unused for ten years.
Two developers CalWest and TrueLife Communities recently decided to complete the project. They approached Vallecitos to determine what is needed to complete water service.
The mains for the project, made of ductile iron pipe, had not been used for ten years. Vallecitos needed to determine the condition of the pipes. Infrastructure Engineering Corporation and subcontractor PICA Corporation are now testing and assessing the integrity of the water main including the pipeline appurtenance (blow-offs, air vacs, and fire hydrants) connections to the main pipeline.
Early damage detection prevents pipeline failures
A pipeline’s condition is assessed to determine its condition before being put into service in the Vallecitos Water District. Photo: Vallecitos Water District
Several processes are included in the High Point Pipeline Assessment project. Crews insert a tool developed by PICA Corporation called a “SeeSnake” into the pipeline, and data indicates the condition of the pipes. The SeeSnake uses an electromagnetic method on iron pipes, which can “see” past cement mortar, epoxy, or polyethylene lining to detect and size any corrosion damage to the iron structure of the pipe itself.
The SeeSnake tool is pulled through the pipe at 17 feet per minute, delivering data as the inspection is being performed in real-time. The technology helps expedite information, saving time and costs by accelerating the process without sacrificing attention to detail. Vallecitos is then able to assess the pipeline’s wall thickness, potential iron loss, and any other anomalies to determine the condition of the existing pipeline.
See video demonstrating the SeeSnake pipeline assessment.
“Good decisions start with good information,” said Kris Embry, PICA regional manager. “Our ultimate goal in testing this new system is to quickly and efficiently secure accurate condition assessment information, allowing the Vallecitos Water District to address any weak links and prevent potential pipeline failures long before they happen.”
When the inspection is completed, the repair process begins.
Two water pipelines are being inspected for the condition analysis, one running along Woodland Heights Glen starting at Briar Patch Glen, and one running along Elderwood Glen, totaling approximately 3,067 feet. The larger 2,300 feet section of pipe is near the District’s existing Palos Vista.
Preventive measures save water and costs
Over time, pipelines are exposed to corrosion from aggressive soils, electrical currents, damage to coatings or linings, physical force, or other factors. Photo: Vallecitos Water District
Over time, pipelines are exposed to corrosion from aggressive soils, electrical currents, damage to coatings or linings, physical force, or other factors. The result could be a pipeline break which could case other infrastructure damage, interruption to water service, a loss of water, or monetary losses.
When an inspection finds corrosion, the affected section of iron pipeline is isolated, removed, and replaced by PVC pipe. Because iron pipelines can be susceptible to corrosion from multiple causes, they are no longer installed in the Vallecitos Water District.
The inspection found two badly corroded areas of pipeline and excavations verified the accuracy of the data. The Vallecitos Water District continues testing the new process and the accuracy of the data to determine whether to adopt the new technology for future working pipeline assessments.
California State Senate President pro Tem Toni Atkins of San Diego on Monday received the 2019 Safe Drinking Water Champion Award from the California Municipal Utilities Association in Sacramento.
“The award recognizes Senator Atkins’ leadership to work collaboratively with her colleagues in the Senate, Assembly and Governor’s office in securing funding for communities that do not have access to safe drinking water,” said Danielle Blacet-Hyden, CMUA director for water, as she presented Senator Atkins with the award.
Just days before Christmas, Mayor Kevin Faulconer became the first mayor since Jerry Sanders in 2012 to appear before the 36-member board of the San Diego County Water Authority. The city is the largest member agency of the Water Authority with 10 board members.
Faulconer was there to dip a toe into the decade-long courtroom fight between the Water Authority and Los Angeles-based Metropolitan Water District of Southern California.
https://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.png00Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngMike Lee2020-01-28 10:50:372020-01-31 14:50:47There’s No Water Under the Bridge in the Feud That Won’t End
UC San Diego will send airborne scientists into huge offshore storms to deepen their understanding of ”atmospheric rivers,” the plumes of moisture that can bring nourishing rains, and flooding, to the West Coast.
The second of up to 12 winter weather reconnaissance flights is scheduled to take off from Travis Air Force Base near Sacramento on Tuesday, carrying researchers from NOAA and the Air Force. UCSD will add its own researchers to the trips in about a week.
The university is partnering with the government and military on the project, which is being run out of the UCSD’s Scripps Institution of Oceanography.
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