Water & Wastewater Infrastructure

Water and wastewater facilities don’t run like standard commercial buildings. The air is corrosive. The systems are large. The stakes for mechanical failure are high. We’ve worked in treatment plants and pumping stations across Oregon and Southwest Washington. We know what these facilities demand and we build to it.

The Work Is Different Here

The air inside a water or wastewater facility has to move — a lot of it, and in the right direction. Foul air has to go out. Fresh air has to come in. Equipment rooms have to stay cool. And everything has to happen without releasing contaminated air to the atmosphere.

That means large ductwork and big exhaust fans. High-capacity air movement, properly directed. It means filtration that meets code before any air gets released outside. It means air conditioning sized for the electrical equipment running 24 hours a day — not a standard commercial load.

Material selection matters too. Stainless steel and galvanized ductwork corrode in these environments. We use fiberglass ductwork where the air chemistry demands it. That’s not a workaround. That’s the right call for the application.

Why Contractors Choose Santiam

Mechanical work in water and wastewater facilities requires a contractor who understands the environment before they show up. The systems are larger. The materials are more specific. The ventilation requirements are driven by code and by chemistry.

Straight answers on scope and timelines. No surprises when conditions change. Work that passes inspection the first time. We don’t create problems on your job site. When something comes up, we call it out early.

We’ve worked alongside general contractors on some of the more demanding mechanical projects across Oregon and Southwest Washington. The ones who come back know we’ll show up ready and won’t make the job harder than it has to be.

Water & Wastewater Facility Services

Install

New construction and major upgrades. We handle large-tonnage HVAC, high-capacity exhaust systems, corrosion-resistant ductwork fabrication and installation, and filtration systems designed to meet atmospheric release requirements. If the engineer specs it, we’ve done it.

Maintain

These systems run around the clock. Preventative maintenance keeps them running at spec. We schedule around your facility operations so maintenance doesn’t become an emergency.

Repair

When something goes down in a treatment facility, it usually can’t wait. We know these systems and we come ready to work.

Featured Water & Wastewater Projects

Medford Water District WWTP

Klamath Falls Wastewater Treatment — Phase 3

Common Questions About Water & Wastewater Projects

Why is fiberglass ductwork used in wastewater facilities?

The air in wastewater environments is corrosive. It degrades stainless steel and other metals over time. Fiberglass holds up where metal doesn’t. We spec the right material for each application based on what the air chemistry actually demands.

What filtration is required before releasing air to the atmosphere?

Oregon code and federal standards require specific filtration before foul air can be exhausted outside. The requirements vary by facility type and process zone. We build to those standards and document what we install.

How do you handle HVAC for electrical equipment rooms?

Electrical equipment in these facilities generates significant heat and runs continuously. That requires dedicated, properly sized cooling — often large-tonnage systems. We size and install based on the actual load, not a generic estimate.

Can you work in an operating facility?

Yes. We coordinate with your operations team and sequence work to keep the facility running. Most mechanical work in active treatment facilities requires phased execution. That’s standard for us.

What's your service area?

Our commercial team serves the four corners of Oregon and Southwest Washington.

Let’s Talk About Your Project

On time, on scope, no surprises.

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