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Treatment of Hazardous Water and Dredged Materials

In 2023, Brennan acquired the dredging and dewatering division of Infrastructure Alternatives, Inc (IAI). IAI served clients in dredging, dewatering, and water treatment for over two decades, including Brennan. With the acquisition, IAI's team of skilled operators and water treatment experts joined Brennan, bringing with them their expertise, equipment, and system designs. Together, we perform high-quality dredging, environmental remediation, dewatering, and water treatment services to clients throughout the United States.

Hazardous Wastewater and Dredged Water Treatment 

We provide water treatment services for dredging and hazardous wastewater projects throughout the United States. Our greatest strength in dredging water treatment is the depth of experience among our personnel. Whether it be a treatment process, testing, discharge permit, or operating strategy, we have the expertise and equipment to design the best water treatment solution for you. 

Our environmental water treatment services include:  

  • Design of the system 
  • Startup and demobilization
  • Experienced operations staff 
  • Certified operators 
  • NPDES permits applications and reporting 
  • Regulatory agency liaison 
  • Compliance monitoring 
  • Discharge monitoring reports 
  • Treatability testing 
  • Chemical selection and jar testing 
  • Sampling and analysis 
  • Water treatment equipment rental 

Contaminants of concern we treat:

  • Total suspended solids (TSS) and turbidity 
  • Per- and polyfluoroalkyl substances (PFAS)
  • Perfluorooctyl sulfonate (PFOS)
  • Perfluorooctanoic acid (PFOA)
  • Polychlorinated biphenyls (PCBs)
  • Lead
  • Mercury
  • Metals
  • Polyaromatic hydrocarbons (PAHs)
  • Oil and grease
  • Benzene, toluene, ethylbenzene, and xylene (BTEX)
  • Volatile organic compounds (VOCs), OCs
  • Semi-volatile organic compounds (SVOCs)

Need a mobile water treatment solution?

We have a mobile water treatment trailer available. Details are on our website here.


Through an acquisition in February of 2023, the dredging and dewatering division of Infrastructure Alternatives, Inc. (IAI) became a part of J.F. Brennan Company, bringing its services and team members to the Brennan family. More details are available in the news release: Brennan Acquires Dredging & Dewatering Division of IAI With Recent Purchase of Assets.