The water treatment industry in Louisiana is vital for ensuring clean and safe water for various communities and sectors. Encompassing a variety of specialized firms, this sector addresses essential challenges, from municipal wastewater management to innovative filtration technologies tailored for oil and gas operations. As environmental regulations tighten and sustainability becomes a priority, companies are increasingly adopting advanced solutions that minimize water waste and enhance efficiency. This industry is not only experiencing technological advancements but is also evolving to meet the needs of its clientele, making it a dynamic space ripe for investment and growth.


This listing includes 19 companies from Louisiana that vary significantly in size, specialization, and founding dates. Hailing from locations such as Mandeville, Baton Rouge, and Covington, these firms range from small teams of fewer than 50 employees to larger companies with hundreds on staff. Established between 1967 and 2018, they focus on areas like industrial water treatment, municipal solutions, and equipment manufacturing. Collectively, they contribute essential services, technologies, and products toward achieving safe water standards in Louisiana.


Continue reading to discover more about Louisiana's water treatment companies.


Top 19 Water Treatment Companies in Louisiana


1. MECO (Mechanical Equipment Company, Inc.)

  • Website: meco.com
  • Ownership type: Corporate
  • Headquarters: Mandeville, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 84%, Singapore 7%, Ireland 5%, Other 5%
  • Latest funding: August 2016
  • Founded year: 1928
  • Headcount: 201-500
  • LinkedIn: meco_2

MECO (Mechanical Equipment Company, Inc.), established in 1928 and based in Mandeville, Louisiana, is a provider of specialized water purification solutions. The company focuses on engineered products tailored for various industries, including biopharmaceuticals, food and beverage, and industrial applications. MECO offers a comprehensive range of products and services, such as reverse osmosis systems, vapor compression distillation, and pure steam generators. Their commitment to sustainability is evident in their operational practices and product offerings, which aim to meet the critical water needs of their clients while minimizing environmental impact. In 2021, MECO was acquired by Grundfos, a global leader in pump and water solutions, which enhances their capabilities and reach in the water treatment market. MECO also provides engineering support, education, and training services, ensuring that their clients receive not only products but also the expertise needed for effective water management.


2. Enviro-Tech Systems

  • Website: envirotechsystems.com
  • Ownership type: Private
  • Headquarters: Covington, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 75%, India 16%, Mexico 9%
  • Founded year: 1997
  • Headcount: 11-50
  • LinkedIn: enviro-tech-systems

Enviro-Tech Systems, founded in 1997 and based in Covington, Louisiana, specializes in water treatment solutions tailored for the oil and gas industry. The company provides a comprehensive range of services, including the design and manufacturing of oil/water separation equipment, field repair, refurbishment, and engineering consulting. With a workforce of approximately 44 employees, Enviro-Tech Systems has established itself as a reliable partner for businesses seeking efficient and compliant wastewater management solutions. Their products, such as the Enviro-Sep™ Corrugated Plate Separator and the Enviro-Cell™ Induced Gas Flotation Cell, are integral to addressing the unique challenges of produced water treatment. The company has expanded its operations internationally, serving clients not only in the Gulf of Mexico but also in markets across India and Mexico. Enviro-Tech Systems emphasizes innovation and performance in its mission to create a cleaner future through effective water treatment solutions.


3. Ast

  • Website: astfilters.com
  • Ownership type: Private
  • Headquarters: Baton Rouge, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 86%, Vietnam 7%, Tunisia 7%
  • Founded year: 1995
  • Headcount: 11-50
  • LinkedIn: aquaculture-systems-technologies

Aquaculture Systems Technologies, LLC (Ast) is a private water filtration company based in Baton Rouge, Louisiana, founded in 1995. With a workforce of approximately 45 employees, Ast has carved out a niche in the water treatment industry by specializing in advanced bead filtration systems. Their product offerings are tailored for aquaculture applications, such as fish hatcheries and aquaponics, as well as for municipal and industrial wastewater treatment. Ast's filtration systems are designed to enhance water quality and ensure compliance with environmental regulations, addressing critical needs like COD/BOD removal, heavy metals removal, and nitrification. The company has established a reputation for engineering efficient filtration solutions that minimize energy use and water loss while maximizing performance. Their technical expertise is backed by over two decades of experience, and they have collaborated with various clients, including notable institutions like the New York Aquarium and the San Diego Zoo. Ast's commitment to innovation and sustainability positions them as a relevant player in the water treatment industry.


4. Southwest Engineers

  • Website: southwestengineers.com
  • Ownership type: Private
  • Headquarters: Slidell, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1985
  • Headcount: 51-200
  • LinkedIn: southwest-engineers

Southwest Engineers, based in Slidell, Louisiana, is a private company that has been operating since 1985. The firm specializes in industrial water treatment solutions, offering a comprehensive range of products and services. These include boiler and cooling water treatment, cleaning agents, and analytical laboratory services. Their clientele primarily consists of businesses in the manufacturing and municipal sectors, which require effective water management and compliance with environmental regulations. The company prides itself on its customer-centric approach, emphasizing technical expertise and results-driven service. Southwest Engineers is also ISO 9001:2015 certified, reflecting its commitment to maintaining high standards in its operations. With a workforce of around 49 employees, the company has built a reputation for delivering tailored solutions that enhance system performance and profitability for its clients.


5. Environmental Technical Sales, LLC


Environmental Technical Sales, LLC (ETEC) is a private company based in Baton Rouge, Louisiana, founded in 1995. The firm operates as a manufacturer's representative, primarily serving the municipal and industrial water and wastewater markets across Louisiana, Mississippi, Arkansas, and Western Tennessee. ETEC specializes in providing equipment and services for water treatment, wastewater treatment, solids handling, and air emissions. Their offerings include a wide range of products designed to tackle specific environmental challenges faced by their clients. The company prides itself on its knowledgeable staff, which includes eight outside salespersons, eight support staff, and six service technicians, all dedicated to delivering exceptional service. ETEC collaborates with various manufacturers to ensure that they provide high-quality solutions tailored to the needs of their clients, which include engineers, contractors, and end-users in sectors such as pulp and paper, petrochemical, and poultry processing.


6. Max Foote Construction Co., LLC

  • Website: maxfoote.com
  • Ownership type: Private
  • Headquarters: Mandeville, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1979
  • Headcount: 51-200
  • LinkedIn: max-foote-construction-co.-inc.

Max Foote Construction Co., LLC, based in Mandeville, Louisiana, is a private construction company founded in 1979. The firm specializes in the construction of water and wastewater treatment facilities, serving municipalities and organizations that require effective management of water resources. With a workforce of approximately 71 employees, the company operates primarily in the southeastern United States and has a regional office in Birmingham, Alabama. Over its 45 years in business, Max Foote Construction has completed projects totaling over $2 billion, showcasing their significant involvement in the water treatment industry. Their portfolio includes various representative projects such as the Lower Big Haynes Creek Pump Station and the Lucas Wastewater Treatment Plant. The company is licensed to operate in multiple states, including Louisiana, Texas, and Florida, reflecting its operational reach and expertise in the field.


7. H2O Incorporated

  • Website: h2oinc.com
  • Ownership type: Corporate
  • Headquarters: Lafayette, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 94%, India 6%
  • Latest funding: April 2017
  • Founded year: 1980
  • Headcount: 51-200
  • LinkedIn: h2o-incorporated

H2O Incorporated, based in Lafayette, Louisiana, specializes in water treatment solutions tailored for the offshore and marine industries. Established in 1980, the company has developed a range of products that include watermakers, sewage treatment devices, and biofouling control systems. H2O's clientele primarily consists of offshore oil and gas companies, as well as commercial marine operators, who depend on their expertise for clean water and waste management solutions. The company emphasizes the importance of environmental sustainability and compliance with industry standards, ensuring that their systems not only meet operational needs but also adhere to regulatory requirements. H2O's offerings are designed to provide reliable and effective solutions for fresh water treatment, waste water management, and biofouling control, making them a significant player in the water treatment industry.


8. Mid South Chemical Company, Inc.


Mid South Chemical Company, Inc., based in Ringgold, Louisiana, has been a significant player in the water treatment sector since its inception in 1978. The company specializes in manufacturing and supplying a comprehensive range of water treatment chemicals, including biocides, boiler water treatment solutions, and products for potable water treatment. Their offerings are crucial for businesses across various industries that require effective water treatment to maintain operational efficiency and quality. Mid South Chemical is particularly noted for its NSF-certified products, which are approved for use in drinking water systems, ensuring that they meet stringent safety and health standards. The company also provides custom blending, packaging, and private labeling services, enhancing its ability to meet specific customer needs. With a dedicated team and a focus on customer support, Mid South Chemical continues to play a vital role in the water treatment industry, serving clients in the United States, Canada, and the Caribbean.


9. Spectrum Water Technology

  • Website: spectrumwater.com
  • Ownership type: Private
  • Headquarters: Gonzales, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2000
  • Headcount: 11-50
  • LinkedIn: spectrum-water-technology

Spectrum Water Technology, based in Gonzales, Louisiana, is a private company founded in 2000 that specializes in wastewater treatment. The firm provides customized solutions for managing wastewater across various sectors, including refining, petrochemical, food and beverage, and municipal water treatment. Their service offerings include chemical cleaning, biological treatment, dewatering equipment, and wastewater testing and consulting. Spectrum Water Technology is dedicated to helping clients maintain compliance with environmental regulations while also reducing operational costs. They work closely with a range of clients, from Fortune 500 corporations to smaller businesses and public institutions, ensuring that their wastewater management processes are efficient and effective. The company emphasizes the importance of tailored solutions, utilizing advanced laboratory tools to analyze waste streams and develop specific treatment strategies. This approach not only addresses immediate wastewater challenges but also contributes to long-term sustainability and cost savings for their clients.


10. Baleen Process Solutions


Baleen Process Solutions, founded in 2017 and based in Scott, Louisiana, is a private company that specializes in water treatment solutions tailored for oil and gas operators. With a workforce of approximately 42 employees, the company has carved out a niche in providing innovative technologies and services that tackle water quality challenges. Their offerings include advanced filtration and separation technologies designed to help clients manage produced water effectively while ensuring compliance with environmental regulations. Baleen Process Solutions operates both onshore and offshore, demonstrating their capability to address a variety of water treatment needs in the energy sector. They have partnered with ChampionX to enhance their service offerings, particularly for offshore water quality challenges. Their commitment to solving complex water problems is evident in their range of technologies, including the KLEEN-FLUX membrane technology, which is designed for durability and effective oil-water separation.


11. Sepratech Corporation

  • Website: sepratechcorp.com
  • Ownership type: Private
  • Headquarters: Gonzales, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1989
  • Headcount: 51-200
  • LinkedIn: sepratech-corporation

Sepratech Corporation, established in 1989 and based in Gonzales, Louisiana, specializes in industrial water treatment solutions. The company offers a comprehensive range of products, including Lamella Clarifiers, Reverse Osmosis Systems, and Ion Exchange Systems, tailored to meet the needs of industries such as power generation and petrochemical. Sepratech also provides essential services, including equipment rentals, maintenance, and consulting, aimed at optimizing water treatment processes for their clients. Their team of field-experienced engineers conducts system and process audits, helping clients identify cost-saving opportunities and improve operational efficiency. With a commitment to safety and quality, Sepratech has built a reputation for reliability and customer service in the water treatment industry.


12. Gulf States Engineering Co., Inc.

  • Website: gsengr.com
  • Ownership type: Private
  • Headquarters: Covington, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1967
  • Headcount: 11-50
  • LinkedIn: gulf-states-engineering-co-inc-

Gulf States Engineering Co., Inc. is an engineering firm based in Covington, Louisiana, established in 1967. The company specializes in providing equipment and services tailored for water and wastewater treatment, as well as air treatment solutions. With a workforce of approximately 35 employees, Gulf States Engineering serves both municipal and industrial sectors. Their product offerings include a wide range of essential equipment such as pumps, blowers, compressors, and control systems. The company emphasizes the importance of compliance with environmental regulations, ensuring that their clients can maintain necessary standards. Gulf States Engineering also provides full life cycle support, including preventive maintenance and diagnostics, which enhances the reliability and efficiency of the systems they implement. Their extensive experience and application knowledge make them a valuable player in the water treatment industry.


13. Afco 360

  • Website: afco360.com
  • Ownership type: Private
  • Headquarters: Lake Charles, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2018
  • Headcount: 11-50
  • LinkedIn: afco-360

Afco 360, based in Lake Charles, Louisiana, is an industrial services company that specializes in water treatment and waste management solutions. Established in 2018, the company has quickly carved out a niche in the industry by offering a range of services that include lagoon evaluations, lab treatability studies, waste sampling, and on-site turnkey services. They also provide chemical injection products and equipment rentals, which are critical for businesses in sectors such as petrochemical and municipal operations. Afco 360's approach emphasizes technical support and expertise, ensuring that clients receive tailored solutions that align with their specific waste treatment and compliance needs. With a dedicated team and a focus on effective waste management, Afco 360 is positioned to address the challenges faced by its clients in the water treatment sector.


14. Ncmc-llc

  • Website: ncmc-llc.com
  • Ownership type: Family Owned
  • Headquarters: Baton Rouge, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1969
  • Headcount: 51-200
  • LinkedIn: ncmc-llc

Ncmc-llc, based in Baton Rouge, Louisiana, is a family-owned construction firm that has been operational since 1969. The company specializes in municipal water and wastewater projects, providing essential services such as pipe installation, treatment plant construction, and emergency maintenance. With a workforce of 51-200 employees, Ncmc-llc has built a reputation for delivering high-quality infrastructure solutions tailored to the needs of municipalities and private entities. Their extensive experience in the industry is reflected in their ability to handle various soil conditions and challenges, particularly in the Gulf Coast region. Ncmc-llc emphasizes safety and quality in all their operations, ensuring that each project meets the highest standards. Their mission is centered around customer satisfaction, aiming to exceed client expectations through reliable and dependable service.


15. Qsm

  • Website: theqsmgroup.com
  • Ownership type: Private
  • Headquarters: Kenner, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2007
  • Headcount: 11-50
  • LinkedIn: quality-sitework-materials

QSM, based in Kenner, Louisiana, is a private company founded in 2007. With a workforce of around 11 to 50 employees, QSM operates primarily in the Gulf South region, including Louisiana, Mississippi, Alabama, and Florida. The company specializes in infrastructure solutions, focusing on civil engineering and environmental services. Their portfolio includes sitework, stormwater management, and notably, water and wastewater treatment. QSM represents various original equipment manufacturers, providing essential products and services to municipal and industrial water treatment plants. They have completed over 5,000 projects, showcasing their experience and commitment to the industry. QSM's mission emphasizes delivering high-quality products and innovative solutions tailored to the needs of their clients, which include construction firms and utilities. Their proactive approach to customer engagement, such as offering educational Lunch and Learn sessions, further illustrates their dedication to the sector.


16. Evans Equipment & Environmental


Evans Equipment & Environmental, founded in 1987 and based in Broussard, Louisiana, specializes in industrial wash equipment and wastewater treatment solutions. The company offers a range of products and services, including custom wash bays, pressure washers, and wastewater treatment systems. They cater primarily to industries such as heavy equipment and environmental services, providing tailored solutions that meet specific operational needs. With multiple locations across the Gulf Coast, Evans Equipment emphasizes a complete solution approach, managing projects from initial design through to installation and ongoing support. Their commitment to quality and environmental responsibility is evident in their offerings, which include the Evans Bio System and oil-water separators, designed to ensure compliance with environmental regulations. The company operates with a dedicated team, ensuring that clients receive expert guidance and support throughout their projects.


17. Louisiana Water Company

  • Website: louisianawater.com
  • Ownership type: Private
  • Headquarters: Lecompte, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1983
  • Headcount: 11-50
  • LinkedIn: louisiana-water-company

Louisiana Water Company, also known as LAWCO, is a private water utility based in Lecompte, Louisiana. Founded in 1983, the company has a long-standing history of providing clean and safe drinking water to communities across several service areas. With a workforce of approximately 20 employees, LAWCO serves both residential and commercial customers, ensuring reliable access to essential water services. The company emphasizes customer support, offering various payment options and resources to help customers understand their bills and manage their accounts. LAWCO is committed to maintaining high water quality standards, as evidenced by their compliance with the Environmental Protection Agency's regulations and their proactive communication regarding water quality advisories. The company has consistently received high grades for its water systems from the Louisiana Department of Health, reflecting its dedication to infrastructure and service quality.


18. Cenla Environmental Science


Cenla Environmental Science, based in Alexandria, Louisiana, is an environmental consulting firm founded in 1994. The company specializes in water and wastewater management, compliance, and public health services. With a dedicated team of environmental regulatory scientists and certified operators, Cenla Environmental Science provides a comprehensive suite of services aimed at ensuring safe drinking water and adherence to environmental regulations. They operate an accredited laboratory that offers accurate and timely water testing, which is crucial for both public and private clients. The firm serves a variety of sectors, including commercial, municipal, and residential, demonstrating its commitment to enhancing community health and safety through effective water management solutions. Cenla Environmental Science has built a reputation for reliability and expertise in navigating the complexities of environmental regulations, making it a notable entity in the water treatment industry.


19. Pedal Valves

  • Website: pedalvalve.com
  • Ownership type: Private
  • Headquarters: Luling, Louisiana, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1993
  • Headcount: 201-500
  • LinkedIn: pedal-valves

Pedal Valves, Inc. is a private company based in Luling, Louisiana, founded in 1993. The company specializes in plumbing solutions with a strong emphasis on water conservation. They offer innovative products, including foot pedal faucet controllers, which allow users to operate faucets without hand contact, thereby promoting hygiene and reducing water waste. Pedal Valves also provides engineering and construction services designed to help clients minimize water consumption across various settings, from residential homes to commercial facilities such as medical centers and food service establishments. Their engineering team conducts thorough assessments to identify opportunities for water savings, and they have a notable presence in sectors like education, healthcare, and local government. The company operates entirely within the United States and has built a reputation for its commitment to improving sanitation and efficiency in water usage.



Water Treatment Insights: Key Companies in Louisiana


CompanyHeadquarterSizeFoundedOwnership
MECO (Mechanical Equipment Company, Inc.)Mandeville, Louisiana, United States (USA)201-5001928Corporate
Enviro-Tech SystemsCovington, Louisiana, United States (USA)11-501997Private
AstBaton Rouge, Louisiana, United States (USA)11-501995Private
Southwest EngineersSlidell, Louisiana, United States (USA)51-2001985Private
Environmental Technical Sales, LLCBaton Rouge, Louisiana, United States (USA)11-501995Private
Max Foote Construction Co., LLCMandeville, Louisiana, United States (USA)51-2001979Private
H2O IncorporatedLafayette, Louisiana, United States (USA)51-2001980Corporate
Mid South Chemical Company, Inc.Ringgold, Louisiana, United States (USA)11-501978Private
Spectrum Water TechnologyGonzales, Louisiana, United States (USA)11-502000Private
Baleen Process SolutionsScott, Louisiana, United States (USA)11-502017Private
Sepratech CorporationGonzales, Louisiana, United States (USA)51-2001989Private
Gulf States Engineering Co., Inc.Covington, Louisiana, United States (USA)11-501967Private
Afco 360Lake Charles, Louisiana, United States (USA)11-502018Private
Ncmc-llcBaton Rouge, Louisiana, United States (USA)51-2001969Family Owned
QsmKenner, Louisiana, United States (USA)11-502007Private
Evans Equipment & EnvironmentalBroussard, Louisiana, United States (USA)11-501987Private
Louisiana Water CompanyLecompte, Louisiana, United States (USA)11-501983Private
Cenla Environmental ScienceAlexandria, Louisiana, United States (USA)11-501994Private
Pedal ValvesLuling, Louisiana, United States (USA)201-5001993Private


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