Critical Infrastructure. Reliable Execution.

At Millennium Construction, we understand that water and wastewater systems are more than just infrastructure — they are lifelines for our communities, ecosystems, and industries. That’s why our work in this sector is grounded in precision, environmental responsibility, and proven performance.

From hatcheries to dams to spring restoration, we’ve partnered with state and local agencies to deliver water infrastructure that stands the test of time. Our clients — including Montana Fish, Wildlife & Parks — trust us with some of the state’s most sensitive and high-impact projects.

Concrete structure with steps, metal grate, and ramp-like channels; possible water control system.

Project Experience

  • Shields Valley Dam

Restoration and reinforcement to enhance capacity and safety while protecting surrounding habitats.


  • Miles City Fish Hatchery

Delivered complex site work and system upgrades without disrupting hatchery operations — all while meeting stringent environmental standards.


  • Tillet Springs

A multi-phase project improving natural water flow, erosion control, and public access in partnership with conservation teams.

Projects being worked on:

MTDOT-US-12 Culverts Miles City, Montana Sulphur


Built for Performance

Whether we’re upgrading Government systems or restoring natural waterways, our water division brings:


  • Self-performance capabilities with highly skilled crews and equipment
  • Environmental sensitivity and SWPPP-certified project leadership
  • Collaborative problem-solving with agencies and engineers
  • On-time, on-budget delivery backed by decades of field experience


We don’t just build systems — we protect resources.


If your next water or wastewater project demands durability, compliance, and hands-on expertise, Millennium Construction is built to deliver.

Concrete being poured for a bridge construction; truck with boom, workers, and natural setting.

Miles City Culverts