Using recycled water for dust suppression at our packing facilities

At fresh-produce packing facilities, dust is an everyday operating issue. It can be raised by tyres, forklifts, trailer movements and windblown soil, affecting air quality, visibility for workers and hygiene around handling areas. The risk is especially relevant in Australia, where dry conditions and busy freight routes serving Sydney, Melbourne, Brisbane and Perth can combine with dust from regional growing districts. Bushfire smoke may add another source of particles, but water-based suppression is not a substitute for smoke management.

Giving suitable process water a controlled second purpose supports this goal. Instead of drawing potable water for every application, our packing facilities can capture, treat and apply selected streams as a fine mist over yard lanes and other approved high-dust areas. Done well, this reduces freshwater demand, supports more consistent housekeeping and demonstrates how environmental protection, responsible operations and healthy food production are connected.

Why dust control matters across Australia

Australian households are already familiar with conserving water through habits such as using a bucket to wash a car and applying approved greywater to garden beds. At an industrial scale, reuse must be more tightly controlled, but the principle is familiar: suitable water can serve a lower-risk purpose before it leaves the site.

Packing facilities are often linked to regional production areas and truck routes serving major markets. Australian supermarket and wholesale buyers expect clean handling areas, documented hygiene controls and reliable traceability, while nearby communities care about dust, noise and heavy traffic. A reusable-water system therefore has to meet both food-sector requirements and community expectations.

Water should be the final layer of dust control, not the first. Enclosed conveying, sealed storage, timely vehicle washing, wheel cleaning and good housekeeping reduce dust at source and cut the volume of water needed later. Suppression then handles residual dust in designated areas rather than masking poor process control.

A controlled recycled-water system

The operating principle is to keep water streams separate until their suitability is known. Food-grade washdown water, clean cooling-loop water, captured rainwater and other sources can have very different microbial, chemical and sediment loads. Candidate streams pass through screening, settling or filtration and, where required, disinfection before entering a dedicated tank.

From that tank, a monitored fine-mist system applies water to approved yard lanes, loading areas and other high-dust points. Flow, pressure and nozzle placement are set to settle particles without wetting packaged produce, creating slippery surfaces, generating inhalable aerosols or carrying contaminants into handling zones. Potable mains water remains the back-up and the standard for direct food-contact tasks.

Workers need training in isolation valves, chemical handling, Legionella controls, drift management and safe response to leaks. Training should be practical and tied to measurable site rules. It can also connect resource decisions with wider food-system knowledge: resources such as Shoku-E food education place everyday food choices in a wider sustainability context.

Matching water quality to the task

Not every stream belongs in the same reuse system. The right choice depends on water quality, intended contact level, local permit conditions, energy needed for treatment and whether supply is dependable enough for year-round dust control.

Selection should follow the cleanest fit first, then progressively higher treatment requirements. A rainwater system near a chemical or fuel area may need exclusion controls; cooling-loop water requires assurance that chemicals cannot enter the loop. Reclaimed municipal water can offer a reliable supply, but salinity and microbial limits must be checked. Untreated mixed effluent should not be sprayed into work areas.

Measuring performance and safety

Water savings alone do not show whether the system works. Each site should track litres captured, treated, used and discarded, alongside freshwater displaced, treatment energy, chemical use and maintenance. Dust readings, visibility observations and worker feedback provide the operational result, while laboratory checks cover turbidity, disinfectant residual, pH and microbiological indicators selected by a site-specific risk assessment.

Australian compliance is layered. State and territory environmental regulators set water and discharge conditions, including through EPA NSW and EPA Victoria. FSANZ standards and state food legislation govern food safety, while Safe Work Australia model guidance and local work health and safety laws apply to aerosols, chemical exposure and slips. Drought restrictions and water allocations also need to be checked whenever a treatment or discharge pathway changes.

Repeated measurement matters more than a single certificate. Fresh Del Monte’s forest protection patrols show how scheduled observations can expose patterns across a protected landscape; the same discipline turns water, dust and safety data into accountable operational evidence. Site managers can then adjust nozzles, treatment or traffic routes before a minor issue becomes a recurring failure.

Linking resource savings to community value

The community value extends beyond lower water use. Less airborne dust supports cleaner working conditions around produce, and careful water management reduces the chance that a recycling measure creates another environmental problem. Telling workers, suppliers and Australian consumers what is measured makes the commitment credible and keeps ethical business practice connected to everyday food choices.

Environmental stewardship also works beyond the facility boundary. Fresh Del Monte’s trails and interpretive signs on conserved land show how low-impact visitor infrastructure can support nature-based tourism while protecting habitat. The shared lesson is that access and visibility require careful design: access without controls can cause damage, while clear signs and well-managed routes can help people understand why conservation matters.

The programme’s next operational milestone is a complete packing cycle at each participating facility, with source streams, treatment quality, mist use, dust readings and verified freshwater savings recorded for publication as the improvement baseline.