Mark Koester, CEO

Mark has been active in the water and wastewater industry in upstate New York for over 30 years. Mark retains leadership positions in the New York Water Environment Association and New York Rural Water Association. He remains active in the American Water Works Association and local water works affiliates. Away from his intense customer supporting schedule, you may find Mark sky diving, bungee jumping, running a marathon, or topping an overgrown tree. His unyielding energy and enthusiasm for this business has earned him many life-long friendships.

Email: mark@koesterassociates.com

Richard H. Nie, President

Drawing from his 25 years of construction and water / wastewater industry experience in design/build, self-perform construction, and plant operations, Richard spearheads Koester's unique, holistic vision and approach to addressing our clients' water infrastructure issues. This approach inspires a solution model that provides our clients with the complete picture to make informed decisions on their capital and operation investments.  Outside of work, Richard enjoys family time with his wife and children.

Email: rnie@koestercanada.ca

Peter Rupcic, Vice President of Sales & Marketing

Peter Rupcic

25 years  in the private, public and politcal sector will certainly give a person perspective on how the other half lives. From working with million dollar operating budgets in government ministries and Crown  agencies to private and publicly traded start up companies that needed to stretch the value of every dollar spent, Pete understands the importance of balancing the practical with the innovative when advising clients on their infrastructure needs. Away from work, Pete gravitates to the sun, surf, cycling and hiking trails

Email: prupcic@koestercanada.ca

Les Szpunar, Vice President Operations

 Les  is an operations leader with 20 years of senior level experience in the water and wastewater industry. His significant depth and breadth of knowledge and experience in the Ontario water and wastewater market includes design, build and operations services for new and established water and wastewater facilities. Les is a consummate, hands-on operational problem solver who applies his advanced technical and performance knowledge of water and wastewater design principles to assess and implement facility process changes that improve operational performance at Koester-operated treatment works. Outside of work Les enjoys an active lifestyle with family and travel. 

 

Email: les@teamaquatic.com

Justin Bonn, Construction Manager

Justin brings over 11 years of experience in the municipal, industrial, energy and automotive markets where he successfully manages employees and sub trades in the Civil, Mechanical and Electrical disciplines.  Given his field of study (Architecture) and career path, the best word to describe Justin would be ‘adaptable’ as he is always looking for a new challenge.  In his personal time, Justin is a dedicated father who enjoys all things hockey and working on home improvement projects.

Email: jbonn@koestercanada.ca

Jackie Lalonde, Support Services Manager 

Jackie began working with the company in 2003. Her exceptional organizational talents and commitment to customer service led her to a management role at Koester where she is now responsible for Human Resources, Quality Assurance and Occupational Health & Safety. Jackie also oversees all of our data management and facility reporting efforts and is also a certified operator for water and wastewater treatment facilities. Outside of work Jackie enjoys family gatherings with campfires and guitars, cruising the Caribbean, photography and spending time with her Basset Hound Sophie.

Email: jackie@teamaquatic.com

Pat Brethauer, Accounting Manager

From a young age Pat has been counting numbers.  In her youth she set up her play office and went door to door listing the neighbourhood addresses. Then back in her office she tallied them up (without using a calculator!)  After 40 years she is still counting numbers now-- in a real office-- at Koester Canada where she manages the company finances. She is also a certified florist and does the occasional wedding and special event. Volunteering has also been a big part of her life and she has spent many hours with many organizations such as Scouting and organizing fundraisers to support street kids in Nicaragua.

Email: pat@teamaquatic.com