Business Details
50+ Years
experience
Trusted Sewer System Inspection and Rehabilitation Services
Walden Associated Technologies has been a leader in underground sewer system inspection, maintenance, and rehabilitation since 1975. Our 50-year legacy is built on advanced technology, including high-resolution CCTV and trenchless rehabilitation methods, ensuring precise diagnostics and durable solutions. We specialize in serving municipalities and engineering firms with tailored programs to address infiltration, structural damage, and system inefficiencies. Our team of PACP-certified technicians and patented processes deliver cost-effective, long-term infrastructure reliability. With a focus on proactive maintenance and emergency prevention, weve completed over 200,000 linear feet of pipeline rehabilitation.Client testimonials highlight our responsive communication, technical expertise, and commitment to solving complex challenges without excavation. Our partnerships with material innovators like National Liner and Avanti International ensure cutting-edge solutions. From smoke testing to CIPP lining, we provide comprehensive services to extend asset lifespans and minimize community disruption. Our dedication to safety, quality, and customer-centric collaboration has made us a trusted name in municipal infrastructure management.
Services
CCTV Inspection
Pipe Jet Cleaning
CIPP Lining
Injection Grouting
Manhole Rehabilitation
Smoke Testing
Dye Water Flooding
Cementitious Lining
Hydro Excavation
Pipeline Rehabilitation
Details
- Year established: 1975
Highlights and features
- We have 50 years of specialized experience in trenchless sewer rehabilitation.
- Our PACP-certified technicians use state-of-the-art CCTV inspection technology.
- We offer patented solutions like CIPP lining and injection grouting for long-term durability.
- Our team provides proactive communication and project-specific problem-solving.
- We maintain partnerships with leading material innovators for cutting-edge applications.
What people say
50 years of experience
Reliable service
Proactive communication
Expertise in trenchless services
Dedicated staff
Services
CCTV Inspection
Our high-resolution CCTV systems identify sewer defects using color/pan-tilt-zoom cameras and tractor transporters. PACP-certified technicians provide detailed reports with onscreen graphics and audible notes to prioritize repairs. This technology enables precise diagnosis of lateral connections, infiltration points, and structural damage.
CIPP Lining
Cured-in-Place Pipe (CIPP) lining installs structural liners inside damaged pipes without excavation. Available in custom diameters and thicknesses, this solution restores flow capacity and prevents leaks. Materials from National Liner ensure chemical resistance and 50+ year lifespans for mainlines and laterals.
Injection Grouting
We stop groundwater infiltration at joints and connections using Avanti International's chemical grouts. The expanding sealant creates waterproof barriers in soil surrounding pipes. This rapid-application method prevents extrusion back into sewer systems while maintaining structural integrity.
Manhole Rehabilitation
Our cementitious and epoxy linings restore manholes damaged by corrosion or infiltration. Strong Seal and Raven products create monolithic, structural layers that resist hydrogen sulfide attack. The process eliminates excavation needs while extending asset life up to 30 years with minimal downtime.
Smoke Testing
This diagnostic service identifies infiltration sources by introducing non-toxic smoke into sewer systems. Visible smoke emergence points reveal cross-connections and faulty seals. The cost-effective method helps prioritize repairs for inflow reduction, preventing overflows during heavy rainfall events.
Questions
What trenchless rehabilitation methods do you offer?
We provide CIPP lining, sectional lining, cementitious coatings, and injection grouting to repair pipelines without excavation.
How do you inspect sewer systems?
We use CCTV cameras, smoke testing, dye water flooding, and manhole pole cameras for comprehensive diagnostics.
Do you serve areas outside Wisconsin?
Yes, we operate throughout Wisconsin, Illinois, and Minnesota with mobile equipment and local crews.
Can you handle large municipal projects?
Our $18M Heart of the Valley contract demonstrates capability for complex, large-scale infrastructure rehabilitation.
What makes your team different?
Our 50-year legacy combines technical expertise with proactive communication and custom maintenance programs.
