Permits & Standards

Our clients work daily to understand and comply with a complex array of water quality regulations. LimnoTech understands the complexities and challenges associated with the implementation of Clean Water Act (CWA) requirements enforced at the national and state levels. We support our clients as they shape the way permits and standards are implemented, and we have helped them identify cost-effective, yet robust, compliance solutions that are always based on a foundation of sound science and reasoning.

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LimnoTech’s clients are charged with safeguarding our nation’s waters. Municipalities, industries, public utilities, airports, power generators, regulatory agencies, and others share common goals of restoring and protecting recreational and aquatic life uses; protecting drinking water supplies and public health; and controlling wastewater, stormwater, cooling water, and sewer discharges. To achieve these goals, all of these organizations are faced with an ever-changing landscape of regulations related to water quality standards, intake or discharge permits, designation of impaired waters, and TMDLs.

Our clients require expert advice and support. Since our founding, LimnoTech has been a national leader in developing regulatory compliance strategies based on sound science and an in-depth understanding of the regulations. With this knowledge and our solid reputation and relationships with both regulated parties and regulatory agencies, we work cooperatively with both sides to find solutions that benefit all parties and the water resources they share. When needed, our world-class expertise allows us to support our clients in litigation, helping them resolve disputes and focus their efforts on the things that matter most.

Talk with us! Please contact Hans, Tim or Laura to understand better how we may be a good fit to help you.


  • 316(a) Thermal Discharge Compliance

  • 316(b) Cooling Water Intake Compliance

  • Antidegradation Reviews

  • CWA Compliance Strategies for Managing Wastewater, Stormwater, Cooling Water & Combined Sewer Overflows

  • Industrial Pretreatment Requirements

  • Integrated & Watershed-Based Approaches

  • Municipal/Industrial/Airport Stormwater Permitting & Implementation

  • NPDES Permit Applications, Renewals, Negotiation & Appeals

  • Section 303(d) & 305(b) Impaired Waters & TMDLs

  • US Army Corps of Engineers 404 & 408 Permitting

  • Use Attainability Analysis (UAA)

  • Water Quality Criteria Review, Revision & Site-Specific Criteria

  • Whole Effluent Toxicity (TIE/TRE)


  • "LimnoTech continues to be one of the best performing consultants for the District. We appreciate your high level of performance and your firm's commitment to client service and quality deliverables."

    Director of Storm Water Management at a Wastewater and Storm Water Utility


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