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Our wide range of air compliance services is backed by years of experience and our desire to help clients manage their operations in a complex, ever-changing regulatory environment.

Who we are
PMW Environmental is a business service with a firm commitment to helping industry and its partners comply with the Clean Air Act.

PMW Environmental LLC, located in St. Louis, Missouri, is an environmental consulting company focusing on air quality compliance. The company was founded by Pat Walters following her departure from a large Fortune 500 engineering firm where she specialized in air quality compliance for twenty-seven (27) years. PMW Environmental was created out of Pat’s desire to provide industry with the knowledge and dedicated support they deserve in addressing a complex, ever-changing regulatory environment. At PMW Environmental, we love what we do. We bring passion and expertise to every project with on-time, cost-effective performance. Whether we are an extension of your team or taking the lead on your projects, we work diligently and professionally to deliver excellent outcomes for your organization.

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