Clean Air & Clean Water Solutions for Your Plant
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End-to-end solutions and turnkey services for

Air Pollution Control and Water/Wastewater Treatment

ISO 9001 and ISO 14001 Made in the USA

Global OEMs from a variety of industries, government agencies, and municipalities count on Monroe Environmental to provide the highest quality systems for Water & Wastewater Treatment and Air Pollution Control. We have over 45 years of experience, engineering expertise and the manufacturing capabilities to deliver the right solution for you. Quality you count on. Proudly designed, engineered and manufactured in the USA.

Extensive Industry Experience

Air pollution control and water/wastewater applications for various industries and municipal works

Monroe Environmental has the experience to reduce and/or eliminate a wide range of regulated air emissions such as acid gasses, particulate matter (PM), odors, VOCs, mist, & dust.

We have designed and delivered water and wastewater treatment systems to effectively meet the challenges of reducing suspended solids (TSS), dissolved solids (TDS), grit, metals, & oils/FOG from nearly every industrial liquid stream.

Monroe has been helping our customers from a wide range of industries and municipal treatment plants solve these problems for years and we know we can do it for you.

Industries Served

Downstream Oil & Gas Expertise

API Separators and Circular clarifiers for the downstream oil & gas industry

Monroe Environmental has successfully designed and installed countless water treatment and air pollution control systems at refineries, chemical, and petrochemical plants along the Texas Gulf Coast Region and across the country.

We provide a variety of Clarifiers & Separators for nearly any water or wastewater treatment application. Our API Separators utilize API 421 design specifications combined with innovative engineering.

Monroe will design and build air pollution control systems to meet your most demanding requirements for SO2, H2S, HCl, PM 10 & 2.5, aerosols, and many other pollutants.

Oil & Gas Expertise

Benefits of Partnering with Monroe

Monroe Environmental HQ in Michigan
  • Lower total cost of ownership

  • Eliminate costly unscheduled downtime

  • Assistance with regulatory compliance

  • Experienced engineering team

  • Highest quality fabrication facilities

  • Rigorous quality and testing standards

  • Single point of contact and the convenience of a turnkey solution

  • Standard and innovative custom designs

  • P.E. licensed engineers in multiple states

About Monroe

Our Full Line of Air Pollution Control and Water/Wastewater Equipment, Engineering Services, and Replacement Parts

View Our Recent Projects


Rental API Oil/Water Separator for Refinery Expansion

A Texas refinery required an additional wastewater treatment train to treat 500-600 gallons per minute (GPM). Monroe Environmental’s rental API Oil/Water Separator was selected to provide the primary separation stage for the process.

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