Food plants use water because hygiene depends on effective soil removal, rinsing and sanitation. The problem is that many cleaning processes use more water than the surface, soil load or hygiene objective actually requires. In poultry processing, meat production, fruit and vegetable handling, and other food manufacturing environments, that excess water increases cost, wastewater load, energy demand and manual work.
Lowering water use during cleaning is not about accepting weaker cleaning. It is about delivering the right cleaning force to the right surface, at the right moment, with enough control to maintain hygienic results. For plant managers, hygiene managers, technical teams and sustainability leaders, the goal is a cleaning process that is measurable, repeatable and efficient.
Start with hygiene requirements, not a water target
A food plant should not begin by asking how much water can be removed from cleaning. The first question is what each cleaning step must achieve. Product-contact surfaces, conveyors, shackles, crates, filters, drains and surrounding equipment do not all carry the same risk or soil load. They also do not need the same cleaning method.
International food hygiene principles, such as the Codex General Principles of Food Hygiene, emphasize prevention of contamination, effective cleaning and suitable water quality. That matters when reducing water use. Any change to cleaning should be assessed against hygiene outcomes, not only utility bills.
A practical approach is to define the cleaning objective for each area before changing flow rates, nozzles or cleaning frequency. For example, a poultry conveyor carrying wet organic material requires controlled removal of proteins, fat and residues. A floor area may need soil removal and drainage control, but it is usually not the same risk category as a direct product-contact belt. Treating both areas the same often leads to unnecessary water use.
Build a baseline for cleaning water use
Most plants know their total water bill, but fewer know how much water is used by each cleaning task. Without that baseline, teams often reduce water where it is easy rather than where it has the biggest operational value.
Start by mapping water use during a complete cleaning window. Include pre-rinse, foam or chemical application, final rinse, conveyor cleaning, crate washing, shackle cleaning, floor washdown and manual rework. Temporary flow meters, data from pumps, valve timing, hose audits and sanitation logs can all help create a clearer picture.
| Cleaning activity | Data to collect | Why it matters |
|---|---|---|
| Pre-rinse and gross soil removal | Flow rate, duration, water temperature, operator method | Shows whether water is being used to move material that could be removed mechanically first |
| Conveyor and belt cleaning | Liters per operating hour, spray coverage, belt speed, soil load | Identifies continuous water use and overspray on high-use equipment |
| Crate, tray or shackle cleaning | Flow per cycle, cleaning result, rewash rate | Helps compare water use against repeatability and labor demand |
| Manual hose washdown | Hose flow, nozzle type, trigger use, operator time | Reveals uncontrolled flow, open hoses and inconsistent cleaning practice |
| Final rinse | Duration, pressure, temperature, visual and hygiene results | Indicates whether rinsing is longer than needed for effective residue removal |
| Wastewater and drains | Volume, solids load, drainage bottlenecks | Connects cleaning water use to wastewater handling and downstream cost |
This baseline also helps separate essential water use from avoidable water use. A controlled rinse that removes detergent from a product-contact surface is essential. An open hose running between tasks is avoidable. A poorly positioned spray that wets the frame but misses the belt surface is avoidable. A cleaning system that floods the area because it cannot reach a hard-to-clean zone is an engineering issue.
For a broader operational view, IWC has also outlined practical solutions to save water on food production lines that can support a structured water-reduction program.
Remove what water should not have to remove
One of the most effective ways to lower water use is to reduce the amount of soil that reaches the wet cleaning stage. Water is often used as a transport tool for loose product, feathers, fat, fibers, peel, starch or other residues. That may be fast in the short term, but it increases water consumption, drain loading and wastewater treatment demand.
Dry or mechanical removal before wet cleaning can reduce the volume of material that has to be washed away. In poultry plants, this may include better collection of feathers, product fragments and fat deposits before sanitation begins. In vegetable processing, it may include removing leaves, soil and peel before rinsing equipment. In all cases, the principle is the same: do not use clean water to move material that could be captured earlier.
Useful improvements often include:
- Scraping or vacuuming loose residues before wet cleaning starts.
- Improving product transfer points to reduce spillage and accumulation.
- Emptying collection trays, filters and screens before they become overloaded.
- Keeping dry cleaning tools available at the line so operators do not default to hoses.
- Preventing soil from drying onto surfaces, since dried residues usually require more water, more time and more manual force to remove.
This step is especially important before end-of-shift sanitation. When soil is allowed to accumulate and dry throughout production, cleaning becomes more water-intensive. Removing or controlling residues earlier can reduce the pressure on the final cleaning window.
Stop uncontrolled flow before optimizing the cleaning technology
Before investing in new cleaning equipment, plants should first eliminate obvious water waste. This does not mean relying on behavior alone. Operators work under time pressure, and manual cleaning decisions can vary between shifts. The goal is to make efficient water use the normal operating condition.
Common sources of uncontrolled water use include open hoses without trigger controls, worn nozzles, valves left open during breaks, excessive rinse times and spray bars that run when no product or equipment is present. In some plants, the largest savings opportunity is not a single high-volume cleaning point, but many small losses repeated every day.
Practical controls include automatic shutoff valves, trigger nozzles, zone-based activation, preventive maintenance for spray equipment and clear cleaning parameters in sanitation SOPs. For automated systems, valve timing should match the actual cleaning requirement. Running water for a fixed period because the system was set that way years ago is rarely optimal.
Improve impact, coverage and timing instead of relying on volume
Traditional cleaning methods often compensate for poor targeting by adding more water. If the spray does not reach the surface correctly, the common response is to increase flow, increase pressure or extend the cleaning time. That can work in some cases, but it can also create overspray, aerosols, splashback and unnecessary wastewater.
Effective cleaning depends on several physical factors working together. Water must reach the soil. It must have enough impact to loosen residues. It must cover the relevant surface. It must be applied long enough to do the work, but not so long that the extra water adds no benefit.
This is where nozzle selection, distance, angle, droplet behavior and equipment geometry become important. A spray that looks powerful from a distance may not deliver useful cleaning energy to the contact surface. A poorly aligned spray bar may clean one side of a belt while leaving the edges or underside insufficiently reached. A high-pressure lance may remove visible soil, but it can also spread residues to nearby surfaces if not controlled.
Undine® technology from IWC International takes a different approach by mixing water and compressed air under pressure to create high-velocity microdroplets. The practical value is that cleaning energy can be delivered more efficiently to the target surface, rather than depending only on high water volume. Depending on the application, current setup and production environment, this type of technology can help reduce water and energy consumption by up to 70% and labor costs by up to 60%.
Those figures should always be assessed in context. The result depends on the cleaning task, soil type, equipment design, line speed, hygiene requirement, integration conditions and the baseline performance of the existing system. For decision-makers, the important question is not whether one technology can solve every cleaning challenge. It is whether the plant can achieve the required hygiene outcome with a more controlled use of water, energy and labor.
Focus first on high-water cleaning points
Not every cleaning point deserves the same engineering attention. Plants usually get the strongest return by starting with areas that combine high water use, high hygiene importance, frequent cleaning and significant manual effort.
| Cleaning point | Typical water challenge | Lower-water opportunity | Key checks before implementation |
|---|---|---|---|
| Conveyor belts | Continuous spray, overspray, hard-to-reach belt surfaces | Targeted belt cleaning, better spray positioning, inline cleaning during production | Belt material, speed, soil type, underside access, hygiene verification |
| Crates and trays | High-volume rinsing, variable soil load, rewash | Controlled spray pattern, improved pre-removal of solids, optimized wash cycles | Crate geometry, stack handling, wash time, final inspection results |
| Shackles and overhead systems | Fat and protein buildup, difficult access, manual cleaning | Fixed or semi-automated targeted cleaning at critical points | Shackle design, line speed, soil accumulation pattern, safe access |
| Filters and screens | Solids accumulation increases rinsing time | More frequent solids removal, targeted spray, easier access for cleaning | Mesh size, soil load, removal frequency, wastewater impact |
| Floors and drains | Hoses used to move solids over long distances | Dry collection first, better drainage, controlled washdown zones | Drain capacity, slope, slip risk, cross-contamination risk |
| Equipment frames and guards | Splash and residues collect in corners | Hygienic access improvements, focused low-volume cleaning | Access points, removable parts, cleaning validation, maintenance needs |
Conveyors are often a priority because they combine product contact, continuous movement and repeated cleaning demand. If belt cleaning is not targeted well, plants may use large volumes of water while still leaving difficult areas dependent on manual work. IWC explains this in more detail in its article on what makes a water cleaning method effective on conveyors.
Use inline cleaning to reduce end-of-shift pressure
Many food plants clean heavily at the end of production because residues have accumulated throughout the shift. By that point, soils may be thicker, drier or more difficult to remove. Operators then need more water, more time and more manual effort to restore the line.
Inline cleaning can reduce this pressure by cleaning specific surfaces during production or between production steps. The objective is not to replace validated sanitation where it is required. The objective is to prevent excessive buildup, reduce the intensity of final cleaning and improve consistency at critical points.
For example, a targeted inline system on a conveyor can continuously or periodically remove residues before they spread or dry. On shackles or transfer points, controlled cleaning can reduce accumulation in areas that are difficult to access manually. For operations teams, the benefits can include less manual intervention, fewer cleaning interruptions and a more stable hygiene condition during production.
Inline cleaning must be engineered carefully. Water must be controlled so it does not create splash, product quality issues or contamination risks. The system should match the line speed, equipment geometry, soil type and hygienic zoning of the plant. This is why a standard setup is not always the best answer. The right solution depends on the process step and operational goals.
Control splash, drainage and water quality
Lower water use can support hygiene when it reduces uncontrolled spray and unnecessary wet areas. However, water reduction must not create new risks. If less water is used but soil is not removed effectively, residues can remain. If water is poorly directed, it can spread contamination from one zone to another. If drains are overloaded or badly designed, wastewater can become a hygiene issue.
Plant teams should evaluate cleaning water in relation to hygienic zoning, drainage direction and splash control. This is especially important in poultry processing, where wet organic material can move quickly through equipment and floor areas. A lower-water cleaning method should keep water close to the intended surface and reduce unnecessary spread.
Water quality also matters. Water used for cleaning product-contact surfaces must be suitable for that purpose, and any reuse or recirculation concept needs a risk-based assessment. Plants considering reuse should evaluate filtration, treatment, temperature, microbiological quality, chemical residues and local requirements before implementation. IWC covers related considerations in its article on how food plants can reduce water contamination risks.
Validate cleaning performance before locking in savings
A lower-water cleaning project should be treated like a controlled process improvement. The plant needs evidence that hygiene performance is maintained or improved. Visual inspection alone is useful, but it is not enough for critical food-production surfaces.
Validation should compare the existing process with the improved process under realistic production conditions. Include normal soil loads, typical operators, standard line speeds and the same sanitation verification methods used by the plant.
| Validation area | What to compare | Why it matters |
|---|---|---|
| Visual cleanliness | Residues before and after cleaning | Confirms visible soil removal and highlights hard-to-reach areas |
| ATP or rapid hygiene checks | Results by surface and shift | Supports faster comparison of cleaning consistency |
| Microbiological swabs | Results from defined sampling points | Helps verify that hygiene targets remain controlled |
| Water meter data | Volume per cleaning cycle or operating hour | Quantifies actual water reduction rather than estimated savings |
| Energy use | Pump, compressed air, hot water or heating demand | Shows whether water savings also reduce energy demand |
| Labor and downtime | Cleaning hours, manual rework, line availability | Connects hygiene improvements to operational efficiency |
| Wastewater impact | Drain load, solids load, treatment demand | Shows downstream effects of changing the cleaning process |
A pilot is often the safest way to proceed. Choose one line, one conveyor, one crate washing area or one shackle cleaning point. Measure the current situation, install or adjust the cleaning method, then validate results over enough production cycles to account for variation. This gives plant management, hygiene teams, engineering and procurement a stronger basis for investment decisions.
Build a practical implementation plan
A water-saving cleaning project should be simple enough to execute, but detailed enough to avoid surprises. The most successful projects usually involve hygiene, production, maintenance, engineering and operations from the beginning.
A practical sequence is:
- Select one high-water cleaning point with clear operational value.
- Measure current water use, labor time, cleaning time and hygiene results.
- Identify whether the main issue is soil load, poor targeting, uncontrolled flow, difficult access or manual inconsistency.
- Test a lower-water method under normal production conditions.
- Validate cleaning results with the plant’s existing hygiene verification process.
- Calculate the effect on water, energy, labor, downtime and wastewater.
- Standardize the successful setup in cleaning procedures, maintenance plans and operator training.
This approach avoids two common problems. The first is reducing water too quickly without enough hygiene evidence. The second is investing in technology without understanding where the real losses occur. A focused pilot helps create technical proof and builds internal confidence.
How IWC supports lower-water cleaning in food plants
IWC International specializes in industrial cleaning technology for food production environments, with a strong focus on poultry processing. The company’s Undine® technology is designed to improve cleaning performance while using water and energy more efficiently. The same principle can be applied to conveyor belts, crates, shackles, filters and other equipment where targeted cleaning is more effective than uncontrolled volume.
The value is not only the technology itself. Food plants also need process expertise, integration support and a realistic view of hygiene requirements. A poultry processing line, a vegetable processing line and a crate washing system each have different soils, speeds, access limitations and validation needs. IWC can support both standard and custom solutions depending on the production environment and technical requirements.
For plant managers and operations directors, the business case usually comes from several areas combined: lower water use, lower energy demand, reduced manual cleaning, less unnecessary disassembly, better cleaning consistency and improved production availability. The exact result depends on the application and baseline situation, which is why measurement and validation are essential.
FAQ’s about lowering water use during cleaning:
Can food plants lower water use during cleaning without compromising hygiene? Yes, but only when the cleaning process is engineered and validated correctly. The aim is to remove wasteful water use while maintaining the required cleaning result on each surface. Changes should be checked with visual inspection, hygiene testing and water-use data.
Where should a food plant start when trying to reduce cleaning water? Start with a baseline. Measure water use by cleaning activity, such as conveyors, crate washing, manual hose washdown and final rinse. Then prioritize areas with high water use, frequent cleaning, high labor demand and clear hygiene importance.
Is high-pressure cleaning always more efficient than high-volume cleaning? Not always. High pressure can be useful in some applications, but efficiency depends on whether the water reaches the target surface with the right impact and coverage. Poorly controlled pressure can create overspray, splashback and inconsistent cleaning.
How can inline cleaning help reduce water use? Inline cleaning can remove residues before they build up or dry on equipment. This can reduce the intensity of end-of-shift cleaning, lower manual effort and improve consistency at critical points. It must be designed around line speed, equipment geometry, soil type and hygiene zoning.
Does using less water also reduce energy costs? It can, especially when the cleaning process uses heated water, pumping energy or wastewater treatment capacity. However, energy savings depend on the application, the existing system and the replacement technology. Water, energy and labor should be measured together.
How do I know whether Undine® technology is suitable for my plant? Suitability depends on the cleaning task, soil load, equipment design, hygiene requirements and available utilities such as compressed air and water supply. A focused assessment or pilot on a high-water cleaning point is often the best way to evaluate fit and expected value.
Lower water use with a practical cleaning assessment
If your food plant wants to lower water use during cleaning, the strongest results usually come from combining measurement, targeted cleaning technology and process expertise. The right solution should fit your existing line, protect hygiene standards and support operational efficiency.
IWC International helps food processors improve cleaning performance with lower resource consumption, including poultry-focused solutions for conveyors, crates, shackles, filters and other demanding cleaning points. For teams under pressure to reduce water, energy and labor without weakening hygiene, a practical assessment is the right place to start.
