Desalination Facilities
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There are approximately 16,000 to 23,000 operational
desalination Desalination is a process that removes mineral components from saline water. More generally, desalination is the removal of salts and minerals from a substance. One example is Soil salinity control, soil desalination. This is important for agric ...
plants, located across 177 countries, which generate an estimated 95 million m3/day of fresh water. Micro desalination plants operate near almost every natural gas or fracking facility in the United States. Furthermore, micro desalination facilities exist in textile, leather, food industries, etc.


Operating desalination plants

The following table is a list of operating desalination plants. Criteria for inclusion on this list include: * that it's operating (not proposed or decommissioned), and * has a capacity of at least 100,000 cubic meters per day or it's the largest in its country. * excludes desalination plants used primarily for mining


Algeria

Algeria Algeria, officially the People's Democratic Republic of Algeria, is a country in the Maghreb region of North Africa. It is bordered to Algeria–Tunisia border, the northeast by Tunisia; to Algeria–Libya border, the east by Libya; to Alger ...
ranks 2nd in the
Mediterranean The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern ...
with a desalinated water production capacity of (631 million m3/year), followed by
Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...
(405 million m3/year) and
Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
(200 million m3/year). is believed to have at least 20 desalination plants in operation. *Arzew IWPP Power & Desalination Plant, Arzew, 90,000m3/day *Cap Djinet Seawater Reverse Osmosis 100,000 m3/day *Tlemcen Souk Tleta 200,000 m3/day *Tlemcen Hounaine 200,000 m3/day *Beni Saf 200,000 m3/day *Tenes 200,000 m3/day *Fouka 120,000 m3/day *Tipaza 100,000 m3/day *Skikda 100,000 m3/day *Hamma Seawater Desalination Plant 200,000 m3/day built by General Electric *Mostaganem, (Sonaghter) 200,000 m3/day *Magtaa Reverse Osmosis (RO) Desalination Plant 500,000 m3/day, Oran


Aruba

The island of
Aruba Aruba, officially the Country of Aruba, is a constituent island country within the Kingdom of the Netherlands, in the southern Caribbean Sea north of the Venezuelan peninsula of Paraguaná Peninsula, Paraguaná and northwest of Curaçao. In 19 ...
has a large (world's largest at the time of its inauguration) desalination plant, with a total installed capacity of per day.


Australia

The Millennium Drought (1997–2009) led to a water supply crisis across much of the country. A combination of increased water usage and lower rainfall/drought in Australia caused state governments to turn to
desalination Desalination is a process that removes mineral components from saline water. More generally, desalination is the removal of salts and minerals from a substance. One example is Soil salinity control, soil desalination. This is important for agric ...
. As a result, several large-scale desalination plants were constructed ( see list). Large-scale seawater reverse osmosis plants (SWRO) now contribute to the domestic water supplies of several major Australian cities including Adelaide, Melbourne, Sydney, Perth and the Gold Coast. While desalination helped secure water supplies, it is energy intensive (≈$140/ML). In 2010, a Seawater Greenhouse went into operation in Port Augusta. A growing number of smaller scale SWRO plants are used by the oil and gas industry (both on and offshore), by mining companies to supply slurry pipelines for the transport of ore and on offshore islands to supply tourists and residents.


Bahrain

Completed in 2000, the Al Hidd Desalination Plant on Muharraq island employed a multistage flash process, and produces per day. The Al Hidd distillate forwarding station provides 410 million liters of distillate water storage in a series of 45-million-liter steel tanks. A 135-million-liters/day forwarding pumping station sends flows to the Hidd, Muharraq, Hoora, Sanabis, and Seef blending stations, and which has an option for gravity supply for low flows to blending pumps and pumps which forward to Janusan, Budiya and Saar. Upon completion of the third construction phase, the Durrat Al Bahrain seawater reverse osmosis (SWRO) desalination plant was planned to have a capacity of 36,000 cubic meters of potable water per day to serve the irrigation needs of the Durrat Al Bahrain development. The Bahrain-based utility company, Energy Central Co contracted to design, build and operate the plant.


Barbados

In 1994–1995 the island of Barbados experienced a severe 1 in 50 year severe drought that knocked much of the island's drinking water supply offline including the country's sole major hospital in the capital-city Bridgetown. An agreement was negotiated with
General Electric General Electric Company (GE) was an American Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1892, incorporated in the New York (state), state of New York and headquartered in Boston. Over the year ...
's Ionics Inc. to build a reverse osmosis desalination plant on the south western coast of the island capable of supplying 20% of the islands population. The plant began operating within 15 months and was officially commissioned February 2000. Currently many cruise ships purchase water from Barbados due to its good quality.


Cayman Islands

*West Bay, West Bay, Grand Cayman *Abel Castillo Water Works, Governor's Harbour, Grand Cayman *Britannia, Seven Mile Beach, Grand Cayman


Chile

*Copiapó Desalination Plant *Thorium Power Canada, with its affiliate, DBI Chile, have proposed plans to build a 10 MW demonstration thorium reactor in Chile to power the 20 million litre/day desalination plant. All land and regulatory approvals are currently in process.


China

China operates the Beijing Desalination Plant in
Tianjin Tianjin is a direct-administered municipality in North China, northern China on the shore of the Bohai Sea. It is one of the National Central City, nine national central cities, with a total population of 13,866,009 inhabitants at the time of the ...
, a combination desalination and coal-fired power plant designed to alleviate Tianjin's critical water shortage. Though the facility has the capacity to produce of potable water per day, it has never operated at more than one-quarter capacity due to difficulties with local companies and inadequate local infrastructure. The Hong Kong
Water Supplies Department The Water Supplies Department (WSD; ) is the department under the Development Bureau of the Government of Hong Kong of the People's Republic of China providing a Water supply and sanitation in Hong Kong, reliable and adequate supply of wholeso ...
had pilot desalination plants in Tuen Mun and Ap Lei Chau using reverse-osmosis technology. The production cost was put at HK$7.8 to HK$8.4 /m3.LCQ5 : Study on desalination
info.gov.hk (January 10, 2007)
Pilot Plant Study on Development of Desalination Facilities in Hong Kong
. Water Supplies Department, Government of Hong Kong, October 2007, Government of Hong Kong
Hong Kong used to have a desalination plant in Lok On Pai, Siu Lam.Advisory Committee on the Quality of Water Supplies Minutes of Meeting No. 8
. April 1, 2003. Government of Hong Kong
In 2014, the government confirmed the reservation of a 10-hectare site at Tseung Kwan O for the construction of a reverse-osmosis desalination plant with an initial output capacity of 50 million cubic metres per annum. Plans include provisions for future expansion to an ultimate capacity of 90 million cubic metres per annum, which will meet about 10 per cent of Hong Kong's fresh water demand. Detailed feasibility studies, preliminary design and a cost-effectiveness analysis are planned to be completed by 2014. A commissioning date of 2020 is envisaged.


Cyprus

A plant operates in Cyprus near the town of Larnaca. The Dhekelia Desalination Plant uses the reverse osmosis system.


Egypt

*Dahab Desalination Plants Dahab 3,600 m3/day completed 1999. The facility in the South Sinai is being expanded to produce 15,000 m3/day *Hurgada and Sharm El-Sheikh Power and Desalination Plants *Oyoun Moussa Power and Desalination *Zaafarana Power and Desalination *Remelah Desalination Plant As of May 2022, Egypt had a total of 82 desalination plants with a combined capacity of 917,000 cubic meters per day.


Germany

Fresh water on the island of Helgoland is supplied by two reverse osmosis desalination plants.


Gibraltar

Fresh water in
Gibraltar Gibraltar ( , ) is a British Overseas Territories, British Overseas Territory and British overseas cities, city located at the southern tip of the Iberian Peninsula, on the Bay of Gibraltar, near the exit of the Mediterranean Sea into the A ...
is supplied by a number of reverse osmosis and multistage flash desalination plants. A demonstration forward osmosis desalination plant also operates there.


India

India has two large desalinization plants for domestic uses, the Minjur Seawater Desalination Plant and the Nemmeli plant, both in
Chennai Chennai, also known as Madras (List of renamed places in India#Tamil Nadu, its official name until 1996), is the capital city, capital and List of cities in Tamil Nadu by population, largest city of Tamil Nadu, the southernmost states and ...
with 100 million litres per day (MLPD) capacity. For industrial uses, 100 MLPD plant was set up in Dahej, Gujarat in 2022 with an investment cost of approximately .


Iran

An assumption is that around 400,000 m3/d of historic and newly installed capacity is operational in Iran. In terms of technology, Iran's existing desalination plants use a mix of thermal processes and RO. MSF is the most widely used thermal technology although MED and vapour compression (VC) also feature. Iranian project Persian Gulf Water Transfer WASCO will see the biggest Desalination project in the world based in Bandar Abas with 1.6 million capacity. There are three phases, phase 1 will be fully complete by 2024.


Israel

Israel Desalination Enterprises' Sorek Desalination Plant north of Palmachim was foreseen to provide up to 26,000 m³ of potable water per hour once it went online in June 2013 (that is ca. 228 million m³ when projected on an entire year). Once unthinkable, given Israel's history of drought and lack of available fresh water resources, with desalination Israel can now produce a surplus of fresh water. By 2014, Israel's desalination programs provided roughly 35% of Israel's drinking water, about 50% in 2015, and it is expected to supply 70% by 2050. As of May 29, 2015 more than 50 percent of the water for Israeli households, agriculture and industry is artificially produced. Additional desalination plants supply the entire freshwater needs of the city of
Eilat Eilat ( , ; ; ) is Israel's southernmost city, with a population of , a busy port of Eilat, port and popular resort at the northern tip of the Red Sea, on what is known in Israel as the Gulf of Eilat and in Jordan as the Gulf of Aqaba. The c ...
by desalinating a mix of brackish well water and seawater. Similar plants exist in the Arava and the southern coastal plain of the Carmel range.


Kazakhstan

MAEK-Kazatomprom LLP operates sea water desalination plant in Aktau, Mangystau from 1967. Now its power comes to 74,000 m3/day. Earlier it was a part of combined combinate with Nuclear plant and gas electric power stations. Also in Aktau there is membrane technology water desalination plant Kaspiy, which power comes to 20,000 m3/day


Kuwait

Kuwait Kuwait, officially the State of Kuwait, is a country in West Asia and the geopolitical region known as the Middle East. It is situated in the northern edge of the Arabian Peninsula at the head of the Persian Gulf, bordering Iraq to Iraq–Kuwait ...
does not have any permanent rivers. It does have some wadis, the most notable of which is Wadi Al-Batin which forms the border between Kuwait and Iraq. Kuwait relies on water desalination as a primary source of fresh water for drinking and domestic purposes. There are currently more than six desalination plants. Kuwait was the first country in the world to use desalination to supply water for large-scale domestic use. The history of desalination in Kuwait dates back to 1951 when the first distillation plant was commissioned.


Malta

Malta has four reverse osmosis desalination plants in Pembroke, Cirkewwa, Ghar Lapsi and Hondoq and in 2022 they produces about 22 mln m3 of water, accounting for 64% of total water production in the country. Ghar Lapsi II 50,000 m3/day


Maldives

Maldives The Maldives, officially the Republic of Maldives, and historically known as the Maldive Islands, is an Archipelagic state, archipelagic country in South Asia located in the Indian Ocean. The Maldives is southwest of Sri Lanka and India, abou ...
is a nation of small islands. Some depend on desalination as a source of water.


Mexico

The first desalination plant in Mexico was built in 1960 and had a capacity of 27,648 m3/day. As of 2006, there were 435 desalination plants in Mexico with a total capacity of 311,700 m3/day. One of the world's largest desalination plants (380,160 m3/day) is planned for Rosarito.


Morocco

There are multiple desalination projects ongoing in Morocco, mostly desalinating seawater from the
Atlantic Ocean The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...
.


Norway

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...
is a country with little to no problems with water access. Over 99% of the population's water supply comes from fresh water sources such as lakes, tarns, rivers and ground water. There are however three water works in Norway taking use of desalination of sea water and all of them are located in the county of
Nordland Nordland (; , , , ) is one of the three northernmost Counties of Norway, counties in Norway in the Northern Norway region, bordering Troms in the north, Trøndelag in the south, Norrbotten County in Sweden to the east, Västerbotten County to t ...
, only providing around 500 people with water.


Oman

A pilot seawater greenhouse was built in 2004 near Muscat, in collaboration with Sultan Qaboos University, providing a sustainable horticultural sector on the Batinah coast.Seawater Greenhouse wins Tech Awards (2006, Oman & Tenerife)
YouTube. Retrieved May 14, 2012.
* Ghubrah Power & Desalination Plant, Muscat * Sohar Power & Desalination Plant, Sohar * Sur R.O. Desalination Plant 80,000 m3/day 2009 * Qarn Alam 1,000 m3/day * Wilayat Diba 2,000 m3/day There are at least two forward osmosis plants operating in Oman * Al Najdah 200 m3/day (built by Modern Water) * Al Khaluf


Palestine


Pakistan

A water desalination plant was recently inaugurated by Pakistan's Minister for Ports and Shipping at the port city of Gwader on 01 Jan, 2018. This is one of the biggest of its kind plant in
Pakistan Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...
. On the inauguration day the Pakistan's Minister for Ports and Shipping said in his address, To drive this point home, he mentioned that this plant (which can hold 5 million gallons of water) will provide of clean potable drinking water per day – at Rs. 0.8 per gallon.


Qatar

*
Ras Abu Fontas Ras Abu Fontas () is a coastal industrial area in Doha on the boundary with Al Wakrah (municipality), Al Wakrah Municipality in Qatar. The government has designated the district as a free economic zone starting in 2019. Geography In a 2010 survey ...
(RAF) A2 – 160,000  m3/day. The country has plans for two plants with an additional 735,000  m3/ day


Saudi Arabia

The Saline Water Conversion Corporation of Saudi Arabia provides 50% of the municipal water in the Kingdom, operates a number of desalination plants, and has contracted $1.892 billion to a Japanese-South Korean consortium to build a new facility capable of producing a billion liters per day, opening at the end of 2013. They currently operate 32 plants in the Kingdom; one example at Shoaiba cost $1.06 billion and produces 450 million liters per day. *Corniche RO Plant (Crop) (operated by SAWACO) *Jubail 1,400,000 m3/day *North Obhor Plant (operated by SAWACO) *Rabigh 7,000 m3/day (operated by wetico) *planned for completion 2018 Rabigh II 600,000 m3/day (under construction Saline Water Conversion Corporation) * Ras Al-Khair Power and Desalination Plant (operated by Saline Water Conversion Corporation) A hybrid plant serving Riyadh constructed in 2014, and producing 1,036,000 m3/day of water and 2,400MW of electricity. *Shuaibah III 150,000 m3/day (operated by Doosan) *South Jeddah Corniche Plant (SOJECO) (operated by SAWACO) *Yanbu Multi Effect Distillation (MED), Saudi Arabia 146,160  m3/day


Singapore

Desalinated water is planned to meet 30% of Singapore's future water needs by 2060. Existing (25% of Singapore's 2017 water demand) *SingSpring, Tuas (2005) – 30 million imperial gallons (mgd) / 136,380 m3/day @ 3.5kWh/m3 *Sungei Tampines (2007) – 4,000 m3/day, small scale variable salinity desalination. *Tuas South, Tuas (2013) – 70 million imperial gallons (mgd) / 318,500 m3/day @ integrated with a 411 MW on-site combined cycle gas turbine power plant *Tuas (2017) – 137,000 m3/day *Marina East (2020) – 30 million imperial gallons (mgd) / 137,000 m3/day. World's first full scale variable salinity plant capable of treating both river water and seawater. *Jurong Island (2022) – 30 million imperial gallons (mgd) / 137,000 m3/day. Located next to an existing power plant


Spain

Lanzarote is the easternmost of the autonomous
Canary Islands The Canary Islands (; ) or Canaries are an archipelago in the Atlantic Ocean and the southernmost Autonomous communities of Spain, Autonomous Community of Spain. They are located in the northwest of Africa, with the closest point to the cont ...
, which are of volcanic origin. It is the closest of the islands to the
Sahara The Sahara (, ) is a desert spanning across North Africa. With an area of , it is the largest hot desert in the world and the list of deserts by area, third-largest desert overall, smaller only than the deserts of Antarctica and the northern Ar ...
desert and therefore the driest, and it has limited water supplies. A private, commercial desalination plant was installed in 1964 to serve the whole island and enable the tourism industry. In 1974, the venture was injected with investments from local and municipal governments, and a larger infrastructure was put in place in 1989, the Lanzarote Island Waters Consortium (INALSA) was formed. A prototype seawater greenhouse was constructed in Tenerife in 1992. *Alicante II 65,000 m3/day (operator Inima) *Tordera 60,000 m3/day *Barcelona 200,000 m3/day (operator Degremont) El Prat, near Barcelona, a desalination plant completed in 2009 was meant to provide water to the Barcelona metropolitan area, especially during the periodic severe droughts that put the available amounts of drinking water under serious stress. *Oropesa 50,000 m3/day (operator Técnicas Reunidas) *Moncofa 60,000 m3/day (operator Inima) *Marina Baja – Mutxamel 50,000 m3/day (operator Degremont) *Torrevieja 240,000 m3/day (operator Acciona) *Cartagena Escombreras 63,000 m3/day (operator Cobra , Tedagua) *Edam Ibiza + Edam San Antonio 25,000 m3/day (operator Ibiza – Portmany) *Mazarron 36,000 m3/day (operator Tedagua) *Bajo Almanzora 65,000 m3/day


South Africa

* Witsand Solar Desalination Plant *Mossel Bay 15,000 m3/day *Transnet Saldanha 2,400 m3/day *Knysna 2,000 m3/day *Plettenberg Bay 2,000 m3/day *Bushman's River Mouth 1,800 m3/day *Lambert's Bay 1,700 m3/day *Cannon Rocks 750 m3/day


Sweden

While mainland Sweden is able to depend on long rivers, many thousands of lakes and groundwater, the sunny and dry nature of the Baltic Sea archipelago has led to a deficit of water on the island of
Gotland Gotland (; ; ''Gutland'' in Gutnish), also historically spelled Gottland or Gothland (), is Sweden's largest island. It is also a Provinces of Sweden, province/Counties of Sweden, county (Swedish län), Municipalities of Sweden, municipality, a ...
. The island has two desalination plants for brackish water from the
Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by the countries of Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden, and the North European Plain, North and Central European Plain regions. It is the ...
, one built 2016 in Herrvik with a capacity to produce 480 m3/day, and another one with a capacity of 7 500 m3/day in Kvarnåkershamn.


Taiwan

In February 2021 a desalination plant with a daily capacity of 13000 tons was built as an answer to a water emergency. The plant supposed to support semiconductor production in greater Hscinchu area from Nanliao.The Emergency Project of Seawater Desalination Plant, Hsinchu, Taiwan
''HCP''.


Trinidad and Tobago

The Republic of Trinidad and Tobago uses desalination to open up more of the island's water supply for drinking purposes. The country's desalination plant, opened in March 2003, is considered to be the first of its kind. It was the largest desalination facility in the Americas, and it processes of water a day at the price of $2.67 per .Ionics to build $120M desalination plant in Trinidad, Boston Business Journal
''The Business Journals''. Retrieved March 20, 2011.
This plant will be located at Trinidad's Point Lisas Industrial Estate, a park of more than 12 companies in various manufacturing and processing functions, and it will allow for easy access to water for both factories and residents in the country.Trinidad Desalination Plant
. Waterindustry.org (October 26, 2000). Retrieved March 20, 2011.


United Arab Emirates

The UAE relies has over 70 desalination plants, and relies on desalination for 42% of its drinking water. The hosts some of the world's largest desalination plants, which are listed in the table above. The include the Jebel Ali desalination plant in Dubai, a dual-purpose facility, uses multistage flash distillation and is the largest in the world, capable of producing of water per day. Al Taweelah RO is the world's largest reverse osmosis desalination plant, producing of water per day. Some of the smaller ones include: * Kalba 15,000 m3/day built for Sharjah Electricity and Water Authority completed 2010 (operator CH2MHill) * Khor Fakkan 22,500 m3/day (operator CH2MHill) * Ghalilah RAK 68,000 m3/day (operator Aquatech) * Hamriyah 90,000 m3/day (operator Aqua Engineering) * Al Zawrah 27,000 m3/day (operator Aqua Engineering) * Layyah I 22,500 m3/day (operator CH2MHill) * Emayil & Saydiat Island ≈20,000 m3/day (operator Aqua EPC) * Al Yasat Al Soghrih Island 2M gallons per day (GPD) or 9,000 m3/day * A seawater greenhouse was constructed on Al Aryam Island, Abu Dhabi, United Arab Emirates in 2000.


United Kingdom and Crown dependencies

The first large-scale plant in the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
, the Thames Water Desalination Plant, was built in Beckton, east London for Thames Water by Acciona Agua. It was built in 2010 at a cost of £250m. The plant provides up to 150 million litres of drinking water each day (150,000 cubic metres) – enough for nearly one million people.


Jersey

The desalination plant located near La Rosière, La Corbière, Jersey, is operated by Jersey Water. Built in 1970 in an abandoned quarry, it was the first in the British Isles. The original plant used a multistage flash (MSF) distillation process, whereby seawater was boiled under vacuum, evaporated and condensed into a freshwater distillate. In 1997, the MSF plant reached the end of its operational life and was replaced with a modern reverse osmosis plant. Its maximum power demand is 1,750 kW, and the output capacity is 6,000 cubic meters per day. Specific energy consumption is 6.8 kWh/m3.


United States


Texas

There are a dozen different desalination projects in the
state of Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...
, both for desalinating groundwater and desalinating
seawater Seawater, or sea water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximat ...
from the
Gulf of Mexico The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...
. However, currently there are no seawater desalination plants earmarked for municipal purposes. * El Paso: Brackish groundwater has been treated at the
El Paso, Texas El Paso (; ; or ) is a city in and the county seat of El Paso County, Texas, United States. The 2020 United States census, 2020 population of the city from the United States Census Bureau, U.S. Census Bureau was 678,815, making it the List of ...
, plant since around 2004. It produces of fresh water daily (about 25% of total freshwater deliveries) by reverse osmosis. The plant's water costlargely representing the cost of energyis about 2.1 times higher than ordinary groundwater production.


California

California has 17 desalination plants in the works, either partially constructed or through exploration and planning phases. The list of locations includes Bay Point, in the Delta, Redwood City, seven in the Santa Cruz /
Monterey Bay Monterey Bay is a bay of the Pacific Ocean located on the coast of the U.S. state of California, south of the San Francisco Bay Area. San Francisco itself is further north along the coast, by about 75 miles (120 km), accessible via California S ...
, Cambria, Oceaneo, Redondo Beach, Huntington Beach, Dana Point, Camp Pendleton, Oceanside and Carlsbad. * Carlsbad: The Claude "Bud" Lewis Carlsbad Desalination Plant was constructed at a cost of $1 billion by Poseidon Resources and was the largest desalination plant in the United States when it went online December 14, 2015. It produces 50 million gallons a day to 110,000 customers throughout San Diego County. * Monterey County: Sand City, two miles north of Monterey, with a population of 334, is the only city in California completely supplied with water from a desalination plant. *Santa Barbara: The Charles Meyer Desalination Facility was constructed in
Santa Barbara, California Santa Barbara (, meaning ) is a coastal city in Santa Barbara County, California, of which it is also the county seat. Situated on a south-facing section of coastline, the longest such section on the West Coast of the United States excepting A ...
, in 1991–92 as a temporary emergency water supply in response to severe drought. While it has a high operating cost, the facility only needs to operate infrequently, allowing Santa Barbara to use its other supplies more extensively. The plant was re-activated in the spring of 2017.


Florida

In 1977, Cape Coral, Florida became the first municipality in the United States to use the RO process on a large scale with an initial operating capacity of 3 million gallons per day. By 1985, due to the rapid growth in population of Cape Coral, the city had the largest low pressure reverse osmosis plant in the world, capable of producing 15 MGD. As of 2012, South Florida has 33 brackish and two seawater desalination plants operating with seven brackish water plants under construction. The brackish and seawater desalination plants have the capacity to produce 245 million gallons of potable water per day. The Tampa Bay Water desalination project near
Tampa, Florida Tampa ( ) is a city on the Gulf Coast of the United States, Gulf Coast of the U.S. state of Florida. Tampa's borders include the north shore of Tampa Bay and the east shore of Old Tampa Bay. Tampa is the largest city in the Tampa Bay area and t ...
, was originally a private venture led by Poseidon Resources, but it was delayed by the bankruptcy of Poseidon Resources' successive partners in the venture, Stone & Webster, then Covanta (formerly Ogden) and its principal subcontractor, Hydroanautics. Stone & Webster declared bankruptcy June 2000. Covanta and Hydranautics joined in 2001, but Covanta failed to complete the construction bonding, and then the Tampa Bay Water agency purchased the project on May 15, 2002, underwriting the project. Tampa Bay Water then contracted with Covanta Tampa Construction, which produced a project that failed performance tests. After its parent went bankrupt, Covanta also filed for bankruptcy prior to performing renovations that would have satisfied contractual agreements. This resulted in nearly six months of litigation. In 2004, Tampa Bay Water hired a renovation team, American Water/Acciona Aqua, to bring the plant to its original, anticipated design. The plant was deemed fully operational in 2007,Desalination: A Component of the Master Water Plan
tampabaywater.org
and is designed to run at a maximum capacity of per day. The plant can now produce up to per day when needed.


Arizona

* Yuma: The desalination plant in
Yuma, Arizona Yuma is a city in and the county seat of Yuma County, Arizona, United States. The city's population was 95,548 at the 2020 census, up from the 2010 census population of 93,064. Yuma is the principal city of the Yuma, Arizona, Metropolitan ...
, was constructed under authority of the state Colorado River Basin Salinity Control Act of 1974 to treat saline agricultural return flows from the Wellton-Mohawk Irrigation and Drainage District into the
Colorado River The Colorado River () is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and in northern Mexico. The river, the List of longest rivers of the United States (by main stem), 5th longest in the United St ...
. The treated water is intended for inclusion in water deliveries to
Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
, thereby keeping a like amount of
freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mi ...
in Lake Mead,
Arizona Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...
and
Nevada Nevada ( ; ) is a landlocked state in the Western United States. It borders Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. Nevada is the seventh-most extensive, th ...
. Construction of the plant was completed in 1992, and it has operated on two occasions since then. With a full capacity of 73 million gallons per day of permeate water, it is the largest desalination plant in the US. The plant has been maintained, but largely not operated due to sufficient freshwater supplies from the upper Colorado River. An agreement was reached in April 2010 between the Southern Nevada Water Authority, the Metropolitan Water District of Southern California, the Central Arizona Project, and the U.S. Bureau of Reclamation to underwrite the cost of running the plant in a year-long pilot project."A fresh start for Yuma desalting plant"
''Los Angeles Times'', May 1, 2010


References

{{Portalbar, Water Water desalination Water supply infrastructure by country