Solving Problems Before They Overflow

When wastewater systems fail, the fallout is immediate—backups, flooding, violations, fines, and frustrated ratepayers. We don’t just deliver services, we solve the problems that keep our clients up at night.

We uncover root causes and craft realistic, cost-effective solutions to collection system and wastewater treatment needs. Our wastewater teams work work hand-in-hand with communities to restore/expand capacity, address deficiencies, and extend asset life. Our team has experience in delivering successful wastewater treatment system solutions ranging in size from 0.01 to over 300 MGD in small and large communities, utilities, and industries. We do not consider success to only mean a system that operates properly; it is also defined by client satisfaction. Throughout our delivery process, we work closely to understand the challenges and needs of community leaders and operators, which allows our clients to be proactive in their wastewater treatment and management.

Our team strives to determine and evaluate innovative solutions utilizing combinations of new and proven technologies. Our goal is to provide expert knowledge and service through every step of the project process regardless of size or complexity.

We don’t just fix what’s broken, we help you build smarter systems that last.


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Robert W. Holden, II, Ph.D., P.E., BCEE

Robert W. Holden, II, Ph.D., P.E., BCEE

Officer - Senior Vice President and Wastewater Group Head

(317) 788-4551

Robert W. Holden, II, Ph.D., P.E., BCEE

Meet Our Team

Our Technical Services

Collection System

  • Master planning and collection system modeling
  • Asset management planning
  • Sanitary sewer design
  • Sanitary Sewer Evaluation Surveys (SSES) and sewer rehabilitation
  • Lift station design
  • CSO control and elimination

Wastewater Treatment

  • Master planning
  • Asset management planning
  • Process modeling
  • Facility design and construction administration – new, expansion, and upgrade
  • Biosolids management
  • Nutrient removal
  • Biogas reuse
  • Permitting and regulatory assistance
  • Operations support