Recurrent droughts and uncertainties about future water supplies
have led several California communities to look to saltwater for
supplemental supplies through a process known as desalination.
Californians could be drinking water tapped from the Pacific
Ocean off Malibu several years from now — that is, if a
company’s new desalination technology proves viable. OceanWell
Co. plans to anchor about two dozen 40-foot-long devices,
called pods, to the seafloor several miles offshore and use
them to take in saltwater and pump purified fresh water to
shore in a pipeline. The company calls the concept a water farm
and is testing a prototype of its pod at a reservoir in the
foothills of the Santa Monica Mountains. The pilot study,
supported by Las Virgenes Municipal Water District, is being
closely watched by managers of several large water agencies in
Southern California.
Mexico will invest $6.1bn on 17 water projects in regions hit
by drought and flooding over the next six years, news website
Aquínoticias reports. The country is increasingly prone to
drought partly as a result of climate change and partly through
rapid urbanisation, which are draining aquifers. The work will
help 36 million people, said Efraín Morales López, director
general of Conagua, which manages Mexico’s water
infrastructure. He said $750m would be spent in the coming
year, and would fund site preparation for a desalination plant,
aqueducts and flood protection. The plant will be built in
Rosarito, Baja California, with a six-year investment of around
$600m. It will provide water to the Tijuana area, benefiting 6
million residents. Work will begin in November.
In an effort to support its new brackish desalination
plant and other improvements, water rates in Antioch
are set to rise after the city council on Tuesday approved a
new five-year plan. Starting May 1, the cost of water will
increase as much as 7% annually for a single-family home and
then potentially rise further over a five-year period. The
Antioch City Council approved the rate jump in a 4-1 vote.
Councilmember Tamisha Torres-Walker was the lone no
vote. … According to a staff report, the new brackish
desalination plant that is expected to start operating within
the next few months requires increased personnel and
maintenance costs.
On May 22, 2022, the California Coastal Commission voted
unanimously to deny final approval for a desalination plant in
Huntington Beach. It would have produced 56,000 acre feet of
fresh water per year, and would have been privately
financed. … It’s always surprising the vehemence with
which opponents of desalination make their arguments. Some of
these critics are concerned about securing adequate water to
continue farming, and correctly point out that desalination is
expensive. … Because most of the annual cost for water
projects, once they’re built, comes down to paying off the
construction bonds, a useful way to measure their return on
investment is to divide the capital cost by the projected
annual yield. The results may surprise critics of desalination.
A formerly controversial bill aimed at addressing a future in
which New Mexico’s limited water supplies become even more
strained will soon have its first (New Mexico State) Senate
committee hearing following House passage last week. That
passage came with no debate, following a significant overhaul
in the face of considerable environmental opposition to the
so-called Strategic Water Supply. In a nutshell, the bill
proposes a a $40 million program for removing the salt from
less drinkable aquifers and $19 million to map how much water
is available beneath the ground.
Cities across California and the Southwest are significantly
increasing and diversifying their use of recycled wastewater as
traditional water supplies grow tighter.
The 5th edition of our Layperson’s Guide to Water Recycling
covers the latest trends and statistics on water reuse as a
strategic defense against prolonged drought and climate change.
The southern part of California’s Central Coast from San Luis Obispo County to Ventura County, home to about 1.5 million people, is blessed with a pleasing Mediterranean climate and a picturesque terrain. Yet while its unique geography abounds in beauty, the area perpetually struggles with drought.
Indeed, while the rest of California breathed a sigh of relief with the return of wet weather after the severe drought of 2012–2016, places such as Santa Barbara still grappled with dry conditions.
Even as stakeholders in the Colorado River Basin celebrate the recent completion of an unprecedented drought plan intended to stave off a crashing Lake Mead, there is little time to rest. An even larger hurdle lies ahead as they prepare to hammer out the next set of rules that could vastly reshape the river’s future.
Set to expire in 2026, the current guidelines for water deliveries and shortage sharing, launched in 2007 amid a multiyear drought, were designed to prevent disputes that could provoke conflict.
Although Santa Monica may be the most aggressive Southern California water provider to wean itself from imported supplies, it is hardly the only one looking to remake its water portfolio.
In Los Angeles, a city of about 4 million people, efforts are underway to dramatically slash purchases of imported water while boosting the amount from recycling, stormwater capture, groundwater cleanup and conservation. Mayor Eric Garcetti in 2014 announced a plan to reduce the city’s purchase of imported water from Metropolitan Water District by one-half by 2025 and to provide one-half of the city’s supply from local sources by 2035. (The city considers its Eastern Sierra supplies as imported water.)
This 2-day, 1-night tour offered participants the opportunity to
learn about water issues affecting California’s scenic Central
Coast and efforts to solve some of the challenges of a region
struggling to be sustainable with limited local supplies that
have potential applications statewide.
This issue examines desalination and the role it could play in
the future of water supply. In addition to an explanation of the
basics of the technology, the article looks at costs,
environmental impacts and groundwater application. Pilot
desalination projects are featured, including a much-touted
Carlsbad, Calif., facility that promises to substantially boost
that region’s water supply.
This printed issue of Western Water examines
desalination – an issue that is marked by great optimism and
controversy – and the expected role it might play as an
alternative water supply strategy.
This printed issue of Western Water looks at the energy
requirements associated with water use and the means by which
state and local agencies are working to increase their knowledge
and improve the management of both resources.
This printed issue of Western Water features a
roundtable discussion with Anthony Saracino, a water resources
consultant; Martha Davis, executive manager of policy development
with the Inland Empire Utilities Agency and senior policy advisor
to the Delta Stewardship Council; Stuart Leavenworth, editorial
page editor of The Sacramento Bee and Ellen Hanak, co-director of
research and senior fellow at the Public Policy Institute of
California.
This 25-minute documentary-style DVD, developed in partnership
with the California Department of Water Resources, provides an
excellent overview of climate change and how it is already
affecting California. The DVD also explains what scientists
anticipate in the future related to sea level rise and
precipitation/runoff changes and explores the efforts that are
underway to plan and adapt to climate.
Salt. In a small amount, it’s a gift from nature. But any doctor
will tell you, if you take in too much salt, you’ll start to have
health problems. The same negative effect is happening to land in
the Central Valley. The problem scientists call “salinity” poses
a growing threat to our food supply, our drinking water quality
and our way of life. The problem of salt buildup and potential –
but costly – solutions are highlighted in this 2008 public
television documentary narrated by comedian Paul Rodriguez.
A 20-minute version of the 2008 public television documentary
Salt of the Earth: Salinity in California’s Central Valley. This
DVD is ideal for showing at community forums and speaking
engagements to help the public understand the complex issues
surrounding the problem of salt build up in the Central Valley
potential – but costly – solutions. Narrated by comedian Paul
Rodriquez.
20-minute DVD that explains the problem with polluted stormwater,
and steps that can be taken to help prevent such pollution and
turn what is often viewed as a “nuisance” into a water resource
through various activities.
Many Californians don’t realize that when they turn on the
faucet, the water that flows out could come from a source close
to home or one hundreds of miles away. Most people take their
water for granted; not thinking about the elaborate systems and
testing that go into delivering clean, plentiful water to
households throughout the state. Where drinking water comes from,
how it’s treated, and what people can do to protect its quality
are highlighted in this 2007 PBS documentary narrated by actress
Wendie Malick.
A 30-minute version of the 2007 PBS documentary Drinking Water:
Quenching the Public Thirst. This DVD is ideal for showing at
community forums and speaking engagements to help the public
understand the complex issues surrounding the elaborate systems
and testing that go into delivering clean, plentiful water to
households throughout the state.
The 24-page Layperson’s Guide to Integrated Regional Water
Management (IRWM) is an in-depth, easy-to-understand publication
that provides background information on the principles of IRWM,
its funding history and how it differs from the traditional water
management approach.
The Sacramento-San Joaquin Delta always has been at the mercy of
river flows and brackish tides.
Before human intervention, salty ocean water from the San
Francisco Bay flooded the vast Delta marshes during dry summers
when mountain runoff ebbed. Then, during winter, heavy runoff
from the mountains repelled sea water intrusion.
Recurrent droughts and uncertainties about future water supplies
have led several California communities to look to treat salty
water for supplemental supplies through a process known as
desalination.
Desalination removes salt and other dissolved minerals from water
and is one method to reclaim water for other uses. This can occur
with ocean water along the coast and in the interior at spots
that draw from ancient salt water deep under the surface or where
groundwater has been tainted
by too much salt.
It seems not a matter of if but when seawater desalination will
fulfill the promise of providing parts of California with a
reliable, drought-proof source of water. With a continuing
drought and uncertain water deliveries, the state is in the grip
of a full-on water crisis, and there are many people who see
desalination as a way to provide some relief to areas struggling
to maintain an adequate water supply.
“Water, water, everywhere, nor any drop to drink.” – Samuel
Taylor Coleridge
For time immemorial, the seas of the Earth have been seen as an
enticing but unreachable source of fresh water. Separating the
salt from ocean water was always a cost prohibitive process,
primarily reserved to wealthy Middle Eastern nations and
small-scale operations such as ocean-bound vessels and small
islands. Otherwise, through the evolution of modern civilization,
man has depended upon lakes, rivers and groundwater – a supply
that comprises less than 3 percent of the planet’s total water.
