A collection of top water news from around California and the West compiled each weekday. Send any comments or article submissions to Foundation News & Publications Director Vik Jolly.
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The headlines below are the original headlines used in the publication cited at the time they are posted here and do not reflect the stance of the Water Education Foundation, an impartial nonprofit that remains neutral.
… Tijuana River pollution dates back to at least the 1930s,
when the U.S. and Mexican governments built the first
cross-border sewage plants. As Tijuana’s population soared with
its booming industry, the city’s waste outstripped its
treatment systems. … After decades of
deterioration, major improvements came online this year. The
South Bay International Wastewater Treatment Plant, which was
barely operable, is now fully functioning and expanded its
capacity from 25 million to 35 million gallons of wastewater
per day. The project was expected to take two years, but was
completed in 100 days, according to the U.S. International
Boundary and Water Commission.
California’s infrastructure earned a C- grade in a new report
that highlights where improvement and resources are needed the
most. … The California Section for the American Society of
Civil Engineers released its 2025 report card for the state on
Wednesday, Dec. 3. … There are some challenges in
delivering drinking water to Californians.
Over 85% of water utilities surveyed for the report “indicated
that portions of their pipelines or facilities have exceeded
their design life,” according to the report.
… Additionally, about 103 million gallons of
water statewide were lost annually due to system
leakage based on data reported by urban retail water suppliers
from 2017 to 2020, the report cited.
The 31 national monuments designated since the Clinton
administration, which could be downsized as the Trump
administration pushes to open more public lands to extractive
industries, safeguard clean water for millions of Americans,
according to a new analysis from the Center for American
Progress. … The report found that the water supplies for more
than 13 million Americans are directly provided by watersheds
within or downstream of these national monuments. About 83
percent of the water passing through these public lands has no
other protection besides the monument designations, it found.
The U.S. House Water, Wildlife, and Fisheries Subcommittee held
a hearing on sea lion predation on salmon and the effectiveness
of killing the mammals to slow down the trend. Under the
Marine Mammal Protection Act (MMPA), sea lions skyrocketed from
a population of roughly 10,000 in the 1950s to 250,000 today.
That spike has been seen as a success story for the MMPA, but
it’s also had a major impact on salmon populations.
… That predation has undermined the federal government’s
attempts to help salmon recover in the Pacific Northwest, which
includes tens of millions of dollars in funding every year.
… Monterey One Water held a ribbon-cutting on Dec. 2 at its
Marina facility for a new food waste receiving and co-digestion
program that will divert up to 51,000 tons of organic food
waste from local landfills annually. … By adding a
food-waste receiving station and upgrades to existing anaerobic
digesters, Monterey One now combines food waste with wastewater
biosolids to significantly increase biogas production.
… The new infrastructure project at Monterey One Water
was made possible by a $4.2 million grant from CalRecycle.
On November 21, 2025, the U.S. Fish and Wildlife Service and
the National Marine Fisheries Service released four proposed
rules revising implementation of the Endangered Species Act.
Two proposed rules issued jointly by USFWS and NMFS relate
to (i) interagency consultation and (ii) listing/delisting of
species and designation of critical habitat. Two additional
proposed rules issued solely by USFWS relate to (iii) critical
habitat exclusions and (iv) threatened species protections.
These alterations to the ESA framework could impact local land
use and economic development priorities, advancement of public
infrastructure, and federal water project
operations.
Seeking to prevent the California State Water Resources Control
Board from stepping in to regulate groundwater in critically
overdrafted subbasins, local agencies are working to correct
deficiencies in their plans to protect groundwater. With
groundwater sustainability agencies formed and groundwater
sustainability plans evaluated, the state water board has moved
to implement the 2014 Sustainable Groundwater Management Act,
or SGMA. … Under probation, groundwater extractors in
the Tulare Lake subbasin face annual fees of $300 per well and
$20 per acre-foot pumped, plus a late reporting fee of 25%.
SGMA also requires well owners to file annual groundwater
extraction reports.
Last year’s snow deluge in California, which quickly erased a
two decade long megadrought, was essentially a
once-in-a-lifetime rescue from above, a new study found. Don’t
get used to it because with climate change the 2023 California
snow bonanza —a record for snow on the ground on April 1 — will
be less likely in the future, said the study in Monday’s
journal Proceedings of the National Academy of Sciences.
… UCLA climate scientist Daniel Swain, who wasn’t part
of the study but specializes in weather in the U.S. West, said,
“I would not be surprised if 2023 was the coldest, snowiest
winter for the rest of my own lifetime in California.”
Six tribes in the Upper Colorado River Basin, including two in
Colorado, have gained long-awaited access to discussions about
the basin’s water issues — talks that were formerly
limited to states and the federal government. Under an
agreement finalized this month, the tribes will meet every two
months to discuss Colorado River issues with an interstate
water policy commission, the Upper Colorado River Commission,
or UCRC. It’s the first time in the commission’s 76-year
history that tribes have been formally included, and the timing
is key as negotiations about the river’s future intensify.
… Most immediately, the commission wants a key number:
How much water goes unused by tribes and flows down to the
Lower Basin?
A group of Western lawmakers pressed the Biden administration
Monday to ramp up water conservation, especially in national
forests that provide nearly half the region’s surface water.
“Reliable and sustainable water availability is absolutely
critical to any agricultural commodity production in the
American West,” wrote the lawmakers, including Sens.
Michael Bennet (D-Colo.) and Martin Heinrich (D-N.M.), in a
letter to Agriculture Secretary Tom Vilsack. The 31
members of the Senate and House, all Democrats except for Sen.
Kyrsten Sinema (I-Ariz.), credited the administration for
several efforts related to water conservation, including
promoting irrigation efficiency as a climate-smart practice
eligible for certain USDA funding through the Inflation
Reduction Act.
A study led by NASA researchers provides new estimates of how
much water courses through Earth’s rivers, the rates at which
it’s flowing into the ocean, and how much both of those figures
have fluctuated over time—crucial information for understanding
the planet’s water cycle and managing its freshwater supplies.
The results also highlight regions depleted by heavy water use,
including the Colorado River basin in the United States, the
Amazon basin in South America, and the Orange River basin in
southern Africa.
State water management officials must work more closely with
local agencies to properly prepare California for the effects
of climate change, water scientists say. Golden State
officials said in the newly revised California Water
Plan that as the nation’s most populous state, California
is too diverse and complex for a singular approach to manage a
vast water network. On Monday, they recommended expanding the
work to better manage the state’s precious water resources —
including building better partnerships with communities most at
risk during extreme drought and floods and improving critical
infrastructure for water storage, treatment and distribution
among different regions and watersheds.
It’s the most frustrating part of conservation. To save water,
you rip out your lawn, shorten your shower time, collect
rainwater for the flowers and stop washing the car. Your water
use plummets. And for all that trouble, your water supplier
raises your rates. Why? Because everyone is using so much less
that the agency is losing money. That’s the dynamic in
play with Southern California’s massive wholesaler, the
Metropolitan Water District, despite full reservoirs after two
of history’s wettest winters. … Should water users be
happy about these increases? The answer is a counterintuitive
“yes.” Costs would be higher and water scarcer in the future
without modest hikes now.
A steady stream of water spilled from Lake Casitas Friday, a
few days after officials declared the Ojai Valley reservoir had
reached capacity for the first time in a quarter century. Just
two years earlier, the drought-stressed reservoir, which
provides drinking water for the Ojai
Valley and parts of Ventura, had dropped under 30%.
The Casitas Municipal Water District was looking at emergency
measures if conditions didn’t improve, board President Richard
Hajas said. Now, the lake is full, holding roughly 20 years of
water.
After nearly a century of people building dams on most of the
world’s major rivers, artificial reservoirs now represent an
immense freshwater footprint across the landscape. Yet, these
reservoirs are understudied and overlooked for their fisheries
production and management potential, indicates a study from the
University of California, Davis. The study, published
in the journal Scientific Reports, estimates that U.S.
reservoirs hold 3.5 billion kilograms (7.7 billion pounds) of
fish. Properly managed, these existing reservoir ecosystems
could play major roles in food security and fisheries
conservation.
California has unveiled an ambitious plan to help combat the
worsening climate crisis with one of its invaluable assets: its
land. Over the next 20 years, the state will work to transform
more than half of its 100 million acres into multi-benefit
landscapes that can absorb more carbon than they release,
officials announced Monday. … The plan also calls for
11.9 million acres of forestland to be managed for biodiversity
protection, carbon storage and water supply protection by 2045,
and 2.7 million acres of shrublands and chaparral to be managed
for carbon storage, resilience and habitat connectivity, among
other efforts.
The California Department of Fish and Wildlife recommended
Alternative 3 – Salmon Closure during the final days of the
Pacific Fisheries Management Council (PFMC) meeting mirroring
the opinions of commercial and recreational charter boat
anglers. The department’s position is a significant change from
early March. The PFMC meetings are being held in Seattle from
April 6 to 11, and the final recommendations of the council
will be forwarded to the California Fish and Game Commission in
May.
Sustaining the American Southwest is the Colorado River. But
demand, damming, diversion, and drought are draining this vital
water resource at alarming rates. The future of water in the
region – particularly from the Colorado River – was top of mind
at the 10th Annual Eccles Family Rural West Conference, an
event organized by the Bill Lane Center for the American West
that brings together policymakers, practitioners, and scholars
to discuss solutions to urgent problems facing rural Western
regions.
Today, Congresswoman Norma Torres and Congressman David Valadao
– members of the House Appropriations Committee – announced the
introduction of the bipartisan Removing Nitrate and Arsenic in
Drinking Water Act. This bill would amend the Safe Drinking
Water Act to provide grants for nitrate and arsenic reduction,
by providing $15 million for FY25 and every fiscal year
thereafter. The bill also directs the Environmental
Protection Agency (EPA) to take into consideration the needs of
economically disadvantaged populations impacted by drinking
water contamination. The California State Water Resources
Control Board found the Inland Empire to have the highest
levels of contamination of nitrate throughout the state
including 82 sources in San Bernardino, 67 sources in Riverside
County, and 123 sources in Los Angeles County.
Catastrophic weather events wreaked havoc on U.S. agriculture
last year, causing nearly $22 billion in crop and rangeland
losses, according to the American Farm Bureau Federation.
California accounted for $1.14 billion of that figure,
including nearly $880 million in damages from severe storms and
flooding. The figures represent a significant shift from
previous years, when drought and wildfires were California’s
biggest challenges. Since then, atmospheric rivers, Tropical
Storm Hilary and other weather events battered our farming
communities. - Written by Matthew Viohl, director of federal
policy for the California Farm Bureau
