Sentry delivers comprehensive construction solutions for water and wastewater infrastructure across the Midwest. Our self-perform capabilities and licensed professionals support municipalities, industrial facilities, and utilities in building and maintaining critical systems that protect public health and ensure environmental compliance.
Sentry offers General Contracting, Construction Management, Design-Build, and EPC delivery models. What sets us apart is our ability to self-perform critical scopes, giving owners greater schedule control and predictable results. Divisions include Electrical, Mechanical (Plumbing/HVAC), Controls & Automation (UL-listed OEM panels), Structural Steel, Manufacturing, Crane Service, and FieldWorks.
Full service engineering, procurement, and construction for water and wastewater facilities
Licensed electricians, electrical engineers, and project managers experienced with treatment plant systems
Master plumbers and mechanical contractors specializing in process piping, pumps, and treatment equipment
UL-listed OEM panels and SCADA integration for treatment process monitoring and control
Water and wastewater facilities operate 24/7 to serve communities and meet strict regulatory requirements. Our teams understand the critical nature of these systems and plan construction to maintain continuous operation throughout upgrades and expansions. From initial design and permitting through installation and commissioning, we ensure every phase meets environmental standards while minimizing service disruption to your customers or operations.
We manage and self-perform commercial construction projects across South Dakota and the Midwest.
