"Treating Your Water Right"

Lemna Environmental Technologies (LET) is the leading provider of innovative design and affordable wastewater solutions for municipal and industrial clients. From our corporate headquarters in Minnesota we move customers from concept to commission with a turnkey approach that includes state-of-the-art engineering, customized products and services and design solutions that protect the environment and provide significant cost savings.

Whether the application is for a small production facility, a rural community, or a growing suburb, our unique processes can upgrade an existing wastewater treatment facility with minimal or no civil requirements or provide cost-effective alternatives for new construction. Although our core business is lagoon based wastewater treatment systems, we are continually striving to develop new processes and technologies in order to better serve our municipal and industrial clients.

We deliver exceptional customer service, quality products, and ongoing innovation to support the goals and success of our clients, business partners, and vendors. Our mission is our passion as we serve our clients with the promise of “Treating Your Water Right.”


In our 30-year history, we have designed and built more than 300 projects. We strive to broaden our impact on the wastewater industry to help achieve and maintain clean water.


Our concept to commission, turnkey approach includes state-of-the-art engineering and design solutions, field services, and product support to provide upfront capital and long-term operational cost savings.


LET has developed innovative biological treatment processes to address the BOD, TSS, ammonia, phosphorous, and other operational demands in wastewater treatment facilities.

P: (612) 253-2000

E: techsales@lemna.com

4215 White Bear Parkway, Suite 200,
Vadnais Heights, MN 55110

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