Hydro excavation waste is a slurry of soil and water that is removed from the ground by pressurised water and vacuum. It can be dewatered and recycled by using equipment that separates the solid and liquid components. This reduces the volume of waste and the environmental impact.

Packaged chemical waste is any hazardous substance that is stored in containers such as 20litre containers, drums or IBCs. It may include expired, damaged or contaminated products, industrial waste, lab chemicals, fuels or residues. It requires safe and compliant handling, transportation and disposal.

Bulk hazardous waste is waste that contains or is likely to contain hazardous substances toxics or corrosives. Examples of bulk hazardous waste are acid, alkali, oil, fuel, contaminated soil.

InterGroup provide sustainable infrastructure waste cleaning and recycling services. Waste such as road sweepings and cesspit cleaning waste can be cleaned and sorted into useful products extracted for reuse, such as aggregate. This process significantly reduces waste to landfill, contributes to city cleaning and provides net carbon reduction.

We specialise in the safe and effective disposal of Per- and Polyfluoroalkyl Substances (PFAS). Our disposal methods ensure that these harmful chemicals are managed responsibly, protecting both the environment and public health.

Trust InterGroup to handle your PFAS disposal needs with the highest standards of safety and compliance.

With the December 3, 2025, deadline approaching for PFAS firefighting foam regulations—as outlined in the latest EPA Health Issue Newsletter—ensuring compliant disposal is more critical than ever.

Largest licensed exporter in NZ – We hold the license to export the largest volume of soils, sludges, and liquids in New Zealand, ensuring cost-effective solutions for all project sizes.

Comprehensive disposal solutions – Handling PFAS-contaminated soils, sludges, and liquids with care.

Safe handling & repackaging – All IBC packaging must be less than 5 years old, and bulk bags less than 6 months old with no damage.

Fully licensed under the Basel Convention Permit – Ensuring compliance with global environmental regulations.

Regulatory compliance & full documentation support – Helping businesses avoid penalties and meet EPA requirements.