2023 Year in Review M&A Market Update

Critical Infrastructure 

With a focus on Water, Waste Water and Environmental Services our team assists clients in every stage of their business

Critical Infrastructure (CI)

The McLean Group’s Critical Infrastructure group provides both sell-side and buy-side M&A advisory and corporate finance services to lower middle market companies. The businesses that comprise the CI include water and wastewater, food security & supply, energy infrastructure, critical communications, first responders and emergency services and fintech.

Seasoned executives with over 50 years of executive-level operating and investment banking experience lead the CI group. Our team understands the unique qualitative and quantitative value drivers that impact these businesses, resulting in optimal client success.

The McLean Group supports these CI Subsectors:

Recent Publications

Critical Infrastructure, Water M&A Whitepaper - The McLean Group


Water & Wastewater Treatment Equipment
Filtration and Separation Technologies
First-Responder Solutions


Metering Equipment
Monitoring & Control Automation
Energy and Infrastructure Components


Environmental Remediation
Non-Hazardous Waste Handling & Disposal
Engineering Consulting

Mark Bertler – The McLean Group

Mark Bertler

Position: Managing Director
Phone: 847.226.0793
Email: mbertler@mcleanllc.com

Mark Bertler, Managing Director of The McLean Group’s Water & Environmental Group, has represented numerous public and private firms in both advisory and principal roles in strategic management, corporate growth, financing, restructuring, and overall capitalization in the water and environmental segment. Prior to investment banking, he has held senior corporate executive positions with several Fortune 500 water and wastewater manufacturing and service companies with extensive experience across global P&L management, M&A, joint ventures, and strategic planning.

During his career, Mr. Bertler has served in the capacity of a senior executive, investment banker, and advisor on numerous sell and buy side M&A engagements over the past 30+ years. Mr. Bertler holds a BS in Chemical Engineering from the University of Wisconsin – Madison and an MBA from the University of Wisconsin – Milwaukee.

Professional Credentials

  • FINRA Registered Representative (Series 63, 79, and 82)
  • Water Quality Association (WQA) – Past Market Development Committee Chair
  • Water Equipment Federation (WEF)
  • American Water Works Association (AWWA)
  • Business Marketing Association (BMA) International Board of Directors
  • Wishing Well International Foundation – a 501(c)(3) non-profit – Board of Directors

Mark Bertler

Managing Director

Critical Infrastructure

Indus acquired by Tetra Tech - The McLean Group
HydroNovation acquired by Kemflo - The McLean Group