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Water and Wastewater

We deliver efficient, customized solutions to water and wastewater challenges for clients in the public and private sectors.

Proper treatment and management of water and wastewater is essential to protecting the environment and enhancing quality of life. ATC’s subject matter experts and engineers bring decades of hands-on experience in water resources management, water supply, wastewater treatment, stormwater management, and collection/conveyance systems.

We integrate regulatory permitting and compliance, aquatic testing and analysis, and engineering services under one roof. Our nationally accredited aquatic laboratory specializes in Whole Effluent Toxicity (WET) testing with an additional focus in Toxicity Identification and Reduction Evaluation (TIE/TRE) studies. Our in-house regulatory experts assist our clients in navigating through the complex regulatory requirements for effluent qualities and protecting water environment.

Representative Services:

Regulatory Permitting and Compliance:

  • NPDES Permit Application and Renewal
  • Compliance Audit and Inspection
  • Stormwater Pollution Prevention Plan (SWPPP)
  • Spill Prevention, Control, and Countermeasure (SPCC)
  • Cooling Water Intake 316(a) and (b)
  • Field Sampling and Monitoring
  • Site-Specific Permit Variance
  • Noncompliance Responses
  • Mixing Zone
  • Total Maximum Daily Load
  • Industrial Categorical Criteria
  • Strategic Regulatory Consulting
  • Environmental Assessment and Impact Statements

Aquatic Lab Testing and Analysis:

  • Whole Effluent Toxicity (WET)
  • Toxicity Identification Evaluations (TIE)
  • Toxicity Reduction Evaluations (TRE)
  • Bench Scale and Jar Test
  • Wastewater Treatability
  • Water Quality Characterization
  • Site-Specific Water Quality
  • Pollution Source Control

Water Resources Management:

  • Stormwater Management
  • Best Management Practice
  • Hydrology and Hydraulics
  • Watershed Management Plan
  • Water Master Plans
  • Computer Modeling
  • Field Testing and Surveys
  • Hydrologic Studies and Modeling
  • Feasibility Studies
  • Design of Ground Treatment Systems
  • Biological Assessment
  • Well Fields

Water and Wastewater Engineering:

  • Industrial Pretreatment Program Development
  • Municipal Water and Wastewater Treatment
  • Industrial Water and Wastewater Process and Detail Design
  • Conceptual Treatment Plant Evaluations
  • WWTP Hydraulic Modeling and Evaluations
  • Pilot Testing Design and Operation
  • Front-End Engineering
  • Final Design, Plans, and Specifications
  • Troubleshooting and Process Optimization
  • Startup, Commissioning, and Operator Training
  • WWTP Emissions Modeling
  • Construction Management, Surveillance, and Inspection
  • Financial Management Assistance
  • Water Reuses and Recycles

Transmission, Distribution, and Conveyance Systems:

  • Pumping Stations
  • Transfer Stations and Storage Tanks
  • Water Fill Stations
  • Infiltration/Inflow Inspection and Corrective Action Plans
  • Distribution, Collection, and Conveyance Systems Modeling
  • CSO and Sanitary Storm Diversion Structures
  • Cathodic Protection and Corrosion Control
  • Pipe Relining

Related Projects:

Steel Support

WET Testing

Refine and Permit