A collection of top water news from around California and the West compiled each weekday. Send any comments or article submissions to Foundation Writer Matt Jenkins.
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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.
A battle over housing and groundwater in Stanislaus County has
dealt the City of Patterson another legal setback. A Stanislaus
County judge has ruled the city illegally denied a key
application for the proposed 719-home Keystone Ranch
development, finding Patterson violated state housing law when
it rejected the project’s tentative subdivision map. The ruling
marks the latest chapter in an ongoing dispute that began last
year over how to address the city’s groundwater challenges. The
conflict stems from a decision by the California
Department of Water Resources to reject Patterson’s groundwater
sustainability plan and order the city to reduce
groundwater pumping by 10%.
Financial support for the planning phase of the Sacramento-San
Joaquin Delta tunnel has plummeted among Kern County
agricultural water districts as they continue to seek
definitive answers about water supplies and how the tunnel will
operate. The Department of Water Resources (DWR) had been
seeking $33 million from Kern districts to be paid in two
installments this year and in 2027 for the planning and
pre-construction phase of the tunnel, known as the Delta
Conveyance Project. But it will get considerably less
than that based on participation levels that districts have
approved during recent meetings. … The reduced support
will likely be a significant hit to tunnel funding for this
phase, but a DWR spokesman said by email that the project will
proceed.
Officials in Wyoming said a contractor for Mark Zuckerberg’s
tech company, Meta, flushed bacteria-contaminated water into
public sewers during construction of a controversial new AI
datacenter. The incident prompted water authorities in Cheyenne
to implement strict safety regulations on how wastewater from
such projects is disposed of. … The company, however,
noted that contamination by the rare but naturally occurring
Cupriavidus gilardii bacterium did not affect drinking
water supplies. … The incident comes amid growing
nationwide backlash to the construction of resource-hungry
datacenters, which opponents say place unbearable demands on
local water and energy supplies.
A trial that some say could cripple Nevada’s ability to
regulate water within the state began in a Las Vegas courtroom
this week. For decades now, developers and the state have gone
back and forth over Coyote Springs. That’s a development about
an hour northeast of Las Vegas. No one lives there, and that’s
largely because years ago, the state engineer declared there
wasn’t enough water. That decision was backed by the Nevada
Supreme Court. Now, the Seenos, developers from California who
are the sole owners of the development today, are seeking
restitution for all the money they invested in the project.
They claim the state essentially stole their water rights. The
lawsuit could potentially cost the state billions.
Northern Arizona University researchers are studying how last
year’s Dragon Bravo Fire impacted the water supply at the Grand
Canyon. The blaze, which was ignited by lightning on July 4,
2025, burned more than 145,500 acres on the North Rim, making
it the seventh-largest wildfire in the state’s history. The
Transcanyon Waterline pulls water from Roaring Springs and
delivers it throughout Grand Canyon National Park. Snowmelt on
the Kaibab Plateau feeds the aquifer that supplies Roaring
Springs. … The burn scar on the Kaibab Plateau changed the
hydrology of the landscape and, as a result, changed the
quality of the water that seeps through the ground.
A slowing Atlantic Ocean current is projected to intensify
powerful storms in California while reducing snowfall over
Greenland, according to a new University of California,
Riverside study. … The study in Nature Communications
found that as the AMOC [Atlantic Meridional Overturning
Circulation] slows, changes in ocean temperatures affect the
amount of moisture the atmosphere can hold and strengthen
high-altitude winds that steer storms across the Northern
Hemisphere. Stronger winds allow storms to transport more
moisture toward the West Coast, creating atmospheric rivers.
… Although stronger atmospheric rivers increase flood
risk and damage to infrastructure, they could also create
opportunities to capture more water if communities expand
storage capacity and improve forecasting.
San Diego State University researchers unveiled early results
on Tuesday of a new survey about what it’s like to live near
the sewage-laced Tijuana River. More than 500 people living in
Imperial Beach, Nestor, San Ysidro and as far north as Coronado
and National City took the Healthy Water, Healthy Air survey.
… “Nausea, headaches, brain fog, stomach issues,
anxiety, tiredness, sleep problems: a lot of this has been
reported by people taking the health survey,” said Paula
Stigler Granados, one of the lead researchers behind the survey
and an associate professor at SDSU. … Early results show
that when sewage spills into the river, more hydrogen sulfide
is detected, and more people feel ill. Conditions worsen
depending on the weather and season.
… Clean and safe drinking water in the city of Sacramento is
dependent on a small crew of water plant operators … who
monitor the century-old plant 24 hours a day. The city staffers
provide this critical service with little fanfare but growing
concerns. For at least the last few years, the city’s
water treatment plants have been understaffed and their
operators overworked, often logging 60 hours a week. Since
2023, overtime hours for the city’s water plant staff have
increased from about 4,000 hours to 5,300 hours. The total
overtime cost to the city during that time? $3.5 million.
Golden mussels are creating a growing challenge for
California’s waterways, and environmental advocates say the
state still lacks a consistent strategy to prevent the invasive
species from spreading. … The mussels have already
forced several counties to declare emergencies, while agencies
across California work to slow their spread. But as officials
respond, one major question remains: why are some waterways
requiring boat inspections while others are not? Advocates
argue that without consistent prevention measures across the
state, one waterway’s efforts could be undermined by another’s
weaker protections. … The criticism comes after the
California Department of Water Resources ended mandatory
watercraft inspections and decontamination requirements at Lake
Oroville.
Longtime water industry leader Reddy Pakala was seated as
Calleguas Municipal Water District’s new representative on the
board of directors of the Metropolitan Water District of
Southern California. Pakala brings more than three decades of
experience in water and wastewater, including serving as the
director of Ventura County’s Water and Sanitation Department.
He succeeds Jacque McMillan, who served on Metropolitan’s
38-member board since 2023. … While leading the Water
and Sanitation Department, Pakala managed the County Special
Districts, which included six water systems, one recycled water
system and six sewer systems.
While many visitors admire the scenic beauty of the Carpinteria
Salt Marsh, few realize that some of its most popular
educational and stewardship programs are powered almost
entirely by the volunteers of the Carpinteria Salt Marsh Docent
Program. Every Saturday morning, volunteer docents welcome
residents and visitors alike for free guided tours of the
Carpinteria Salt Marsh, sharing the area’s remarkable geology,
wildlife and history. On the first Saturday of most months,
another dedicated group — the Carpinteria Weed Warriors — heads
into the marsh to remove invasive plants and help restore
habitat for native species. According to longtime
volunteer and program coordinator Andrea Adams-Morden, both
programs have one simple goal: helping people understand why
the marsh matters.
Gov. Gavin Newsom is putting his stamp on the powerful agency
overseeing California’s biggest water fights — and racing to
get his pet projects across the finish line before his term
ends. Jared Blumenfeld, Newsom’s former CalEPA
secretary, took his seat for the first time Tuesday on
the five-member State Water Resources Control Board days after
Newsom appointed him to replace Laurel Firestone. …
Blumenfeld’s arrival gives Newsom a deeply experienced ally on
the board right as the agency is preparing to make final
decisions on Newsom’s water priorities. These include a
long-delayed master plan for the Sacramento-San Joaquin
River Bay Delta, as well as water right permits for
the Sites Reservoir and the Delta
Conveyance Project, the controversial 45-mile long
tunnel to divert more water from Northern to Southern
California.
When the Colorado River first filled the country’s largest
reservoirs decades ago, it ushered in a century of optimism in
the West. We planned for abundance. Today, more than 40 million
people across seven states, 30 Tribal Nations and two countries
rely on this river. … We cannot accept a new set
of management rules that deepen hardship for the Upper
Basin while allowing unsustainable water use to continue
downstream. Water conservation cannot decimate Upper Basin
economies to bolster Lower Basin ones. When we use less water,
that water flows downstream to be used elsewhere. Colorado and
the other upper division states have lived on the front lines
of climate change for 25 years; it’s time for the lower
division states to do the same. –Written by Becky Mitchell, Colorado’s commissioner on the
Upper Colorado River Commission.
… The California Department of Fish and Wildlife announced
last week that golden mussels were discovered in the Sacramento
River Deep Water Ship Channel and Washington Lake in West
Sacramento. … Because of the potential that golden
mussels clog up water infrastructure and affect
wildlife, Sacramento County declared a local emergency
last month, joining San Joaquin and Kern counties. In a news
release announcing the move, officials said it would allow the
county to work more closely with regional, state and federal
partners to confront the threat. Yolo County spokesperson Will
Arnold said the county is considering that option and will be
working with West Sacramento and the port to coordinate next
steps.
Despite firm opposition from the Havasupai Tribe, Arizona
regulators on July 6 permitted a higher level of
arsenic in groundwater under a uranium mine near the
tribe’s place of emergence. Before the approval, two
groundwater scientists submitted comments urging the state
Department of Environmental Quality (ADEQ) to require the owner
of the Pinyon Plain uranium mine to give more proof that the
higher levels were naturally occurring and not due to mining
discharge or activities. Energy Fuels Resources, the mine
owner, says its investigation was thorough and that operators
aren’t at fault. It also disputed those scientists’
findings.
Mark your calendars! Registration will be opening soon for two
exciting Water Education Foundation events this fall. First,
join us Oct. 29 for the Water
Summit, the Water Education Foundation’s premier
event of the year, bringing together leading policymakers,
experts and stakeholders to discuss the most pressing water
issues facing California and the West. Then, we’re excited
to introduce our first-ever Kern River Tour Nov.
5-6, a unique opportunity to explore one of
California’s most important and complex river
systems. Among the planned stops are both upper forks of
the Kern River, Lake Isabella, lower Kern River canyon, the
Friant-Kern Canal, irrigated agriculture in the valley, the
Kern Water Bank and more. It will not be an annual tour, so
don’t miss this opportunity! Registration and
additional details for both events will be available
soon. Stay tuned!
Clark County commissioners heard from residents Tuesday calling
for a pause ondata center development in Southern
Nevada, as concerns grow over water use, energy
consumption and land use. Commissioners discussed the issue
during the meeting but did not articulate a clear path forward
for next steps. … The pause gives time for officials to
evaluate the water, energy and land use impacts of data
centers. … According to the Desert Research Institute,
data centers used 22% of Nevada’s electricity generation in
2024, a figure that could top 35% by 2030. Meanwhile, 12 of
Nevada’s more than 60 data centers are projected to use
11.9 billion liters of water per year by 2033.
A research project involving Arizona’s three public
universities aims to get a better sense of how much
water is in Arizona’s groundwater basins — and figure
out how to get more water into aquifers, rather than being lost
to evaporation. The Arizona Tri-University Recharge and Water
Reliability Project finds, among other things, that more than
95% of the precipitation that falls around the state is lost to
evapotranspiration. In the Phoenix Active Management Area
groundwater basin, the amount of evapotranspiration is about
equal to the amount of precipitation. … [T]he project’s
purpose is to help the Arizona Department of Water Resources
identify ways to capture water that’s currently being lost and
get it underground as recharge.
Hotter, drier weather threatens to double water bills by
mid-century in some cities, according to a
Stanford-led study. The research, published July 8
in Nature Sustainability, is the first to comprehensively
model how climate change, infrastructure investment, and
household water demand can combine to compound an already
growing affordability crisis. … To understand how
predicted changes in temperature and rainfall over the next two
decades are likely to affect local water supplies and costs,
the research team analyzed data from Santa Cruz, California.
… Using a modeling framework developed with data from Santa
Cruz’s water department, the researchers linked plausible
future climate scenarios with utility adaptation decisions. …
Among the results: measures taken to adapt to less water
availability could lead to a near doubling of median water
bills in Santa Cruz by mid-century.
An effort to find common ground in the waters of the Kern River
ran into a bar late last month at the Kern County Water Agency
meeting, specifically Board President Marty Milobar. Members of
Bring Back the Kern have been visiting the boards of entities
with rights to the Kern River to applaud the currently flowing
river through town, note the resurgence of wildlife and remind
board members how the water brings families to its banks.
… “Several of our member units (agricultural water
districts) have Kern River water rights that go back to 1880s,”
Board President Milobar said. … “Those rights support
hundreds, or thousands of families that work in ag. To take
that water away from farms so you can see a toad or something
is pretty tough on these Kern River rights districts.”
