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Unlikely Allies Got White House to Tackle Tijuana River Mess: How They Pulled it Off

/in , , /by /Los Angeles Timesby Anna M. Phillips and Jennifer Haberkorn

For decades, millions of gallons of raw sewage and trash have flowed from the Tijuana River to the Pacific Ocean, fouling beaches, angering Southern Californians and getting worse by the year.

An estimated 143 million gallons of waste from Tijuana spilled into the river valley in 2017, overwhelming a treatment plant built by the United States and Mexico nearly 25 years ago. Last October, a corpse clogged a sewage intake screen, causing a backup and sending 14.5 million gallons of polluted water over the border and into the U.S.

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Study: Toxic Elements Around Salton Sea Could Adversely Affect Nearby Residents

/in , , /by /KPBSby Shalina Chatlani

More than dust-filled air could be plaguing residents around the quickly evaporating Salton Sea in Imperial Valley. University of California, Riverside research shows toxic aerosols could also be filling the air. The problem has to do with agricultural fertilizer in the Salton Sea wetland area. UC Riverside toxicologist Sabbir Ahmed and first-author on the study says the fertilizer is rich in the element selenium, which is necessary for human body health, but not in excessive doses. Ahmed said plants in the area digest this mineral and release into the air as an aerosol, which is air filled with liquid or solid particles.

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FPUD Adds PFAS Treatment to Conjunctive Use Project work

/in , , /by /Village Newsby Joe Naiman

The Fallbrook Public Utility District has amended its design contract for the Santa Margarita River Conjunctive Use Project so that the groundwater treatment plant can also remove per and polyfluoroalkyl substances (PFAS) contaminants from the treated water. A 5-0 FPUD board vote Jan. 27 approved an amendment to the design contract with Infrastructure Engineering Corporation which will provide IEC with an additional $771,143 and which will provide FPUD with treatment process selection, design services, and construction administration for the additional facilities.

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State Officials Ask EPA for Action On Cross-Border Pollution

/in , /by /Fox 5

The State Lands Commission and State Controller pleaded with the Environmental Protection Agency in a letter Friday asking for immediate action to stop the flow of 50 million gallons per day of polluted water into the Tijuana River Valley. That polluted water flow has created significant and ongoing beach closures in Imperial Beach and Coronado. “The State Lands Commission is deeply concerned about the latest flows of untreated wastewater into the Tijuana River and the impacts of this pollution on community health and public lands,” said State Controller and State Lands Commission Chair Betty Yee.

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EPA Loans Coachella Valley Water District $59 Million for Stormwater Control

/in , /by /Desert Sun.by Mark Olalde

The Coachella Valley Water District and the U.S. Environmental Protection Agency on Friday signed an agreement for a $59.1 million loan to finance improvements to the district’s 134-mile stormwater system that drains into the Salton Sea. CVWD has 35 years to pay back the money, made available through the federal Water Infrastructure Finance and Innovation Act, which began doling out low-interest loans in 2017. The funding will help pay for two projects in the valley — one to increase the canal’s capacity between Coachella and Thermal and another that will build 3.3 miles of channel near Shadow Hills.

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Mysterious Machine Dropped to the Bottom of Lake Hodges

/in , , /by /NBC7 (San Diego)by Joe Little

It’s the only one of its kind in Southern California and no one will see it again for years.

“It’s a giant upside-down cone with some pipes,” said Jeff Pasek. “It’s a strange looking device.”

It’s a strange looking device called a Speece Cone that’s expected to improve the water quality at Hodges Reservoir near Escondido.

“It’s not going to be seen again for a number of years because it’s 70 feet deep in the reservoir,” said Pasek, a Project Officer with the City of San Diego’s Public Utilities Department.

The $3.4 million project will constantly inject oxygen into the reservoir which will reduce the nutrients that algae feed on, Pasek said.

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Blog: Imperial Valley Conservation Efforts Benefit San Diego, Southwest

/in , , /by /Water Education Foundation (Sacramento, Calif.) Quoted: San Diego County Water Authority

The San Diego County Water Authority’s Board of Directors visited the Imperial Valley January 30 for a day-long tour that highlighted areas critical to the agency’s Regional Conveyance System Study.

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Sweetwater Authority Eyes Recycled Water That Otay Water District Doesn’t Use

/in , , /by /San Diego Union-Tribuneby David Hernandez

Sweetwater Authority’s governing board has its eyes on recycled water — specifically, an excess of recycled water that a neighboring water agency, the Otay Water District, buys from the city of San Diego.

The governing boards of the two water agencies, which combined serve southern and eastern San Diego County, recently created a joint committee to explore a potential arrangement that would allow
Sweetwater to purchase recycled water from Otay.

The board presidents of both water agencies said the idea could benefit customers on both ends.

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Sediment Loading Key to Predicting Post-Wildfire Debris Flows

/in , /by /Phys.orgby Pennsylvania State University

The mudslides that follow wildfires in Southern California can be deadly and difficult to predict. New research can help officials identify areas prone to these mudslides and respond before disaster occurs, according to scientists.

Mudslides, or debris flows, can occur when rainfall washes away the buildup of sediment in mountain channels. Roughly equal parts water and sediment, debris flows are strong enough to carry large boulders downhill and threaten communities on or near the mountains.

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District Helps Make Desert Bloom

/in , , /by /Capital Pressby Julia Hollister

The Coachella Valley Water District faces hefty challenges each day: providing water for more than 1,200 ag customers on 65,000 acres in a desert environment.

The water district serves San Diego, Imperial and Riverside counties and nine cities.

“I would say managing our water on a long-term basis, optimizing our Colorado River water and groundwater and using them as efficiently as possible are major priorities for us,” said Katie Evans, director of communications for the district.

The Coachella Valley’s farmland is one of the largest contributors to the local economy, known for its dates, citrus fruit, grapes and bell peppers. More than two-thirds of local farmland is irrigated in part with Colorado River water delivered via the Coachella Canal.

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