Trusted Experts in Commercial Plumbing
Providing Mechanical & Utility Contracting Services
From large-scale installation to urgent repairs, we deliver reliable solutions that keep your systems running smoothly.
Comprehensive Contracting for Complex Projects
What We Do
We specialize in mechanical and utility systems for commercial, industrial, and municipal projects. Whether you need ground-up infrastructure or system retrofits, we have the expertise to deliver – safely, on time, and on budget.
Municipal Services
G.A. Rich & Sons, Inc. partners with municipalities to build, maintain, and rehabilitate critical water distribution and collection systems. Our municipal crews specialize in water main and sanitary sewer installation, stormwater management, and emergency infrastructure repairs. With strong collaboration with city engineers and public works, we ensure compliance, sustainability, and performance.
Commercial Plumbing
For over 50 years, G.A. Rich & Sons has delivered plumbing services for commercial, educational, and healthcare facilities across Illinois. From design-build to renovations, our licensed plumbers install domestic water, sanitary waste, storm drainage, air, gas, RPZ’s, water quality, and medical gas systems. We uphold strict quality and safety standards while collaborating with contractors and design teams.
Water & Wastewater Treatment Facilities
G.A. Rich & Sons, Inc. has decades of experience designing, constructing, and upgrading water and wastewater treatment facilities. We install and retrofit process piping, chemical feed and storage systems, and mechanical equipment with precision and safety. Our team handles piping ½”–72” in stainless, ductile iron, PVC, concrete, and HDPE, delivering reliable, compliant solutions under tight constraints.
Site Utilities
Our Site Utilities Division provides underground utility construction for commercial, industrial, and public projects. We install and rehabilitate water mains, storm and sanitary sewers, gas mains, and lift stations using open-cut and trenchless methods like HDD, enabling efficient work in sensitive areas. G.A. Rich & Sons, Inc. is known for exceptional safety, coordination, and strict quality standards.
Hydro Excavation & Sewer Jetting
Our Hydro Excavation Division delivers precise, non-destructive digging and cleaning using high-pressure water and vacuum systems. This method safely exposes buried utilities, performs daylighting, trenching, media removal, and sewer bypassing without damage. Our jetting services clear roots, grease, and debris from 4”–36” mains, supporting construction, maintenance, and emergency response.
Insertion Valve & Line Stop
We are a certified installer of Hydra-Stop Insta-Valve, line stop systems, and AVT EZ-Valves. We install line stops from 2”–12”, including 3-way configurations, and provide live taps from ¾”–12” plus insertion valves from 2”–24”. Our technicians use precision equipment to minimize downtime, control pressure, and maintain service for municipalities, treatment facilities, and industrial clients.
Pre-fabrication
Our in-house BIM and Prefabrication teams enhance quality, coordination, and scheduling. Using 3D modeling and clash detection, we catch conflicts early and fabricate piping off-site in controlled environments. Prefabricated skids and spools arrive ready for installation, reducing labor, improving safety, and ensuring precision. We scan before and after construction to verify accuracy and quality.
Design-Build & BIM Integration
G.A. Rich & Sons, Inc. provides Design-Build and Design-Assist services, blending field expertise with digital tools. Using BIM, we create accurate 3D models to coordinate with architectural, structural, and MEP systems, reducing conflicts and improving routing. Our BIM and prefabrication teams work together to deliver safer, faster, and higher-quality installations that align design with constructability.
Our Core Values
It's not just what we do – it's how we do it.
These values guide how we operate on every job site, in every meeting, and with every client. They're the foundation of our reputation – and the standard we hold ourselves to every day.
Team
- Built through community
- Holding each member accountable
- Placing the success of the team above self-interest
Professionalism
- Conducting oneself with responsibility, integrity, accountability, and excellence.
- Communicating effectively and appropriately
- Always finding a way to be productive
Above & Beyond
- Pride in our work
- Quality workmanship
- Customer Commitment
- Honesty
About Us
Built on legacy. Driven by leadership.
As a multi-generational, women-owned mechanical contractor, we bring decades of hands-on experience and forward-thinking leadership to every project. Our team specializes in complex commercial plumbing systems, with a focus on water and wastewater treatment facilities – where precision, reliability, and compliance are non-negotiable.
We've earned the trust of municipalities, engineers, and general contractors through consistent performance, deep technical expertise, and a commitment to doing the job right – the first time and every time.
