Giant Hygiene Services launches in NSW and ACT
Giant Hygiene Services is an independent occupational hygiene consultancy specialising in the scientific assessment of air, water, and indoor environments.

Working in NSW and the ACT, Giant Hygiene Services (GHS) says it provides practical, evidence-based solutions that support safe, healthy, and compliant workplaces.
The newly formed company aims to help organisations stay compliant and support the wellbeing of building occupants, whether for an office building, healthcare facility, school, or commercial space.
GHS offers environmental testing and consulting in:
- Indoor air quality (IAQ) and water quality testing
- Energy efficiency and sustainability
- Water damage and mould investigations
- Mechanical ventilation inspection and auditing
- Occupational hygiene and ventilation advisory
- Local exhaust ventilation (LEV) advisory
- NABERS indoor environment & WELL AP testing
- UV light emission testing and reporting
- UV and VHP testing and validation.
The company provides the following solutions:
- Certified NABERS and WELL AP assessor
- Accredited member of AIOH and AIRAH
- NATA-accredited laboratory testing
- Independent, science-based advice
- Personalised service.


Giant Hygiene Services is led by Gregor Riese, M.AIRAH, an environmental scientist and occupational hygienist with over 25 years of experience across government, private, and industrial sectors.
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