POTABLE WATER, WASTE, STORM & SPECIALTY SYSTEMS
Code-compliant plumbing engineering solutions for commercial, industrial, institutional, and public-sector projects. From domestic water distribution and sanitary waste systems to storm drainage and specialty piping, we deliver permit-ready designs that support efficient construction and long-term performance.
OVERVIEW
Columbia Engineering Group provides plumbing engineering services for commercial, industrial, healthcare, institutional, and government projects throughout Washington and Oregon. From domestic water and sanitary systems to storm drainage, specialty plumbing, and facility upgrades, we deliver practical, buildable solutions that support efficient construction and dependable long-term operation.
More than calculations and fixture schedules, we provide practical engineering support that helps projects move smoothly through design, permitting, and construction. Our team works closely with owners, architects, contractors, and public agencies to reduce coordination issues and deliver permit-ready plumbing solutions.
PROJECT TYPES
WHAT WE DELIVER
Reliable hot and cold water distribution systems designed for performance, efficiency, and code compliance.
Practical drainage and venting systems engineered for efficient operation and long-term reliability.
Coordinated stormwater conveyance systems that integrate with building and site infrastructure.
Specialized solutions for laboratories, commercial kitchens, industrial facilities, and other unique environments.
System modernization solutions that improve reliability, efficiency, maintainability, and code compliance.
ENGINEERING EXPERTISE
OUR PROCESS
We follow a proven process that emphasizes coordination, clear communication, and practical engineering solutions, helping projects move efficiently from planning through construction.
We evaluate your site, project goals, jurisdictional requirements, and opportunities for cost savings.
Our team delivers clean, code-compliant designs tailored to your site conditions, integrated across disciplines.
We help prepare permit-ready structural documentation and respond quickly to jurisdictional review comments to keep approvals moving forward.
From field RFIs to inspections, we’re here to ensure your site is built to spec with no surprises.
Plumbing deliverables should match the priorities of the stakeholder using them. Developers, architects, contractors, and agencies each need something slightly different.
We help projects move efficiently through permitting, inspections, and construction while supporting budget and schedule goals.
Our engineers collaborate closely with design teams to integrate structural requirements while preserving architectural intent.
We deliver code-compliant documentation and dependable engineering support for public-sector projects.
We provide practical details, responsive communication, and construction-phase support that reduce field issues and project delays.
FEATURED PROJECTS
Cowlitz County, WA
Complete MEP design for a 27,000 SF trucking hub, delivered by CEG, featuring VRF HVAC, energy recovery ventilation, infrared heaters, LED lighting controls, and full plumbing infrastructure.
Vancouver, WA
SunModo’s 35,000 SF warehouse and office received complete MEP engineering by CEG, incorporating heat pump HVAC, EV charging, and rooftop solar to support growth and sustainability goals.
Medical Lake, WA
CEG resolved chronic drain backups by replacing waste and vent pipes across four floors and expanding laundry facilities, with plumbing and electrical engineering provided.
CLIENT TESTIMONIALS
Our work speaks for itself, and so do the people we’ve served.
CLIENT TESTIMONIAL PLACEHOLDER
— Commercial Developer, Bellevue, WA
CLIENT TESTIMONIAL PLACEHOLDER
— Commercial Developer, Bellevue, WA
Questions we hear often, answered directly, without the runaround.
Yes. Our plumbing engineers work alongside CEG’s civil, structural, mechanical, electrical, and fire protection teams, so systems are coordinated across disciplines.
Washington, Oregon, and Idaho. We are licensed in all three states and work from our office in Vancouver, WA.
Yes. From field RFIs to inspections, we stay involved so your plumbing systems are built to spec.
START YOUR PROJECT
Columbia Engineering Group is your trusted partner for high-performance plumbing engineering solutions. Serving clients throughout Oregon, Washington, and Idaho, our veteran-led team delivers practical, code-compliant plumbing designs backed by technical expertise, multidisciplinary coordination, and a commitment to successful project delivery.
Contact Columbia Engineering Group for project inquiries and engineering services.
We respond to inquiries within 1 business day