Dye Testing
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What is Dye Testing and what it includes
Dye Testing is a field investigation method used to verify the connectivity of private sewer systems to municipal sewer infrastructure. The service helps determine where a specific inlet (example: toilet/sink, roof drain, catch basin) ultimately discharges, providing valuable information for redevelopment projects, condition assessments, sewer separation programs, and utility planning.
Kiwa T2 uses non-toxic, highly visible tracer dye and controlled water flow to track where it deposits in the system. Testing is completed in real time by experienced field personnel who observe discharge locations and document sewer connectivity. Results can be incorporated into engineering drawings, infrastructure records, utility mapping projects, and municipal submission packages.
Who is it for?
This service is intended for land developers, property owners, municipalities, civil engineers, consulting engineers, project teams involved in redevelopment, infrastructure upgrades, sewer investigations, and due diligence assessments. These stakeholders typically require reliable information about existing sewer infrastructure to support planning, design, permitting, compliance, and construction activities.
Benefits of Dye Testing
- Confirms which municipal sewer system a private connection is tied into
- Supports redevelopment, construction, and infrastructure planning
- Helps identify unknown or undocumented sewer connections
- Provides reliable information for engineering and municipal review
- Assists with sewer separation and environmental protection initiatives
- Reduces uncertainty before construction or design activities begin
- Creates defensible records that can support future asset management decisions
Why Choose Kiwa?
Kiwa T2 specializes in subsurface infrastructure investigations and supports clients with reliable field data that reduces uncertainty and project risk. Our niche is combining subsurface utility engineering, sewer inspection, geophysics and geospatial expertise to help clients understand existing underground conditions.
Through its sewer inspection and condition assessment services, Kiwa T2 utilizes CCTV technologies, utility mapping capabilities, and experienced technical personnel to deliver accurate and practical information that can be integrated into engineering and planning workflows.
Steps in the Process
Project Consultation
Review project objectives, available records, and specific connectivity questions.
Site Review and Planning
Identify testing locations, access points, and municipal infrastructure requirements.
Field Testing
Introduce tracer dye into the targeted system under controlled conditions.
Observation and Verification
Monitor downstream infrastructure to confirm dye and flow from the deposited locations.
Documentation
Record observations, connectivity findings, and relevant field information.
Reporting and Integration
Provide results that can be incorporated into engineering drawings, utility mapping, and project documentation.
Whether you are planning a redevelopment project, investigating existing infrastructure, or supporting municipal compliance requirements, Kiwa T2 can help you verify sewer connectivity. Contact our team to discuss your project requirements and determine the most appropriate investigation approach.
Sewer Mapping
Accurate sewer mapping that helps owners, engineers, and project teams understand the location and orientation of non-linear sewer infrastructure.
Cross-bore Prevention and Verification
Protect critical underground infrastructure and reduce HDD-related risk with CCTV-based cross-bore prevention and verification services from Kiwa T2.
Inflow and Infiltration Investigations
Identify and confirm the location of groundwater entering sewer systems with inflow and infiltration investigations that support data-driven rehabilitation and asset management decisions.