How to create an industrial waste minimisation plan step by step

Regulatory pressure, rising management costs and the shift toward circular production models have turned industrial waste minimisation into a strategic requirement for any company aiming to improve operational efficiency and stay ahead of environmental audits. For producers of hazardous waste, moreover, it is not just good practice: it is a legal obligation.

A well-designed minimisation plan does not only cut tonnes of waste each year; it also lowers raw material consumption, optimises processes and reduces environmental risk. In this article you will find the methodology to create an industrial waste minimisation plan step by step, with the legal requirements and links to key waste management resources.

What is an industrial waste minimisation plan?

A minimisation plan is a technical document that identifies, evaluates and prioritises measures to reduce the generation of industrial waste. It includes a waste inventory, a detailed analysis of each process, a technical and economic assessment of alternatives and a schedule of actions. Its goal is to prevent waste generation at source and increase the recovery of existing streams, following the waste hierarchy while reducing costs and environmental risks.

Companies that apply a well-designed plan gain clear benefits: lower annual management costs, better regulatory compliance, reduced generation of hazardous waste, greater operational stability and more efficient use of raw materials. In high-consumption sectors, minimisation is one of the most cost-effective tools for moving toward circular production models.

Is a hazardous waste minimisation plan mandatory?

Yes. Spain's Law 7/2022 on waste and contaminated soils requires initial producers of hazardous waste to draw up and keep a minimisation plan whose aim is to reduce the quantity and hazardousness of the waste generated. The key aspects of this obligation are:

• The plan must be available to the competent authority, and the company must report its results every four years to the autonomous community where the facility is located.
• Exemptions include, among others, producers that generate less than 10 tonnes per year of hazardous waste per facility, installation and maintenance companies, and those holding EMAS registration whose validated environmental statement already includes minimisation measures.
• The obligation applies nationwide, without prejudice to any additional requirements each autonomous community may set.

In addition, organisations certified to ISO 14001 must demonstrate continuous improvement, which in practice reinforces the value of having a structured plan.

Industrial waste minimisation plan: how to create it step by step

Applying a structured methodology makes it possible to identify where waste is generated, why it occurs and which measures have a real impact on its reduction. Below we explain, step by step, how to design an effective plan that delivers measurable results.

Step 1: how to carry out a reliable initial assessment

The process begins with a thorough assessment of the waste generated. It should cover at least the last three years and include production data, consumption records, maintenance logs, process sheets and waste operator records.

The aim is to obtain an accurate picture of the current situation, identifying all waste generation points in the plant. It must include information on hazardousness, quantities generated, waste origin, processes involved, generation frequency and total management cost. A well-built inventory becomes the baseline against which later reductions are measured, and lets you detect inconsistencies between declared data and the weights recorded by authorised operators.

At this stage it is essential to visit each production area, observe the processes directly and interview operational staff, who often know about losses, purges and deviations that appear in no formal record.

Step 2: how to identify the causes of waste generation

Once the data has been collected, you need to analyse why waste is generated. This analysis must go beyond the technical description of the process: its purpose is to find root causes, not surface evidence.

Several valid methodologies exist: cause-and-effect diagrams, mass balances, process variability analysis, review of critical parameters, material flow mapping or analysis of raw material specifications. Any approach that helps you understand how waste comes to be generated will be useful.

It is common for the real cause not to be the one initially attributed to the process. For example, a loss blamed on the raw material may actually stem from a poorly set temperature or dosing parameter; correcting it immediately reduces generation without changing the formulation or the technology. The aim of the analysis is to identify concrete intervention levers: times, temperatures, dosing, mixes, cleaning processes, tolerances or raw material characteristics.

Step 3: how to identify real minimisation opportunities

With the causes clear, you can identify measures to reduce or eliminate waste. Minimisation opportunities fall into five main categories:

1. Source reduction: changes to the production process, reformulation, raw material substitution, parameter adjustments or operational redesign that reduce losses. It is the most effective measure and the one that delivers structural savings.
2. Proper segregation: many waste streams cannot be recovered because they are mixed with incompatible streams. Improving segregation can turn a non-recoverable waste into a recyclable one without changing the process.
3. Operational optimisation: changes to cleaning routines, reagent dosing, production cycles or preventive maintenance that immediately reduce the amount of waste generated.
4. Reduction technologies: filtration, ultrafiltration, distillation, centrifugation or evaporation allow products to be recovered, waste to be concentrated or volumes to be reduced. They usually require investment but generate stable savings.
5. Internal or external recovery: turning waste into by-products, or reintroducing it into other processes, reduces its economic and environmental impact. It requires technical and legal analysis but delivers quantifiable results.

Step 4: how to evaluate the measures technically and economically

A list of ideas is not a plan. To prioritise, you need to evaluate each measure from two perspectives: the waste reduction it delivers and its economic feasibility.

The technical evaluation considers the real impact on the process, compatibility with existing equipment, ease of implementation, industrial safety and regulatory requirements. The economic evaluation looks at initial investment, operating costs, annual savings and payback period. The key at this stage is that each measure translates into a quantified waste reduction and a clear annual financial saving.

Step 5: how to develop the plan's roadmap

The plan must become a clear, realistic and structured roadmap. Each measure should include an owner, deadline, resources, monitoring indicators and a verification source. This allows the plan to be integrated into the environmental management system, especially in organisations certified to ISO 14001.

Actions should be classified into three blocks: immediate implementation, short-term implementation and strategic implementation. This approach helps you achieve quick wins while progressing on higher-impact technical projects, and prevents the plan from becoming a static document or a mere formal requirement.

Step 6: how to implement the plan across the organisation

Implementation requires internal communication, training, procedure reviews and direct follow-up on the ground. Resistance to change is common in industrial plants, especially when measures affect production routines. That is why it is key to demonstrate with data that the changes deliver tangible improvements in safety, efficiency or cost. Integrating the plan into the management system, updating work instructions and linking environmental indicators to continuous improvement objectives ensures long-term success.

Step 7: how to monitor and verify results

Monitoring is decisive: without measurement, there is no minimisation. Each company must track the evolution of waste generated, the impact of the measures implemented, the recovery achieved and the associated savings. Periodic reviews with area managers allow deviations to be corrected and parameters to be adjusted.

Digitalisation is especially useful at this stage. Tools such as Manglai's waste management platform, which centralise indicators, evidence, permits and traceability, enable continuous control and make internal and external audits easier. To understand why digitalising makes the difference, read our article on how digitalising waste management optimises costs and ensures compliance.

Why is an industrial waste minimisation plan necessary?

Creating an industrial waste minimisation plan is a technical process, but the results are measurable. Companies that adopt structured methodologies reduce costs, improve efficiency and move toward circular economy models, while meeting the legal obligation when they generate hazardous waste. With a clear roadmap, rigorous evaluation and continuous monitoring, any organisation can reduce its environmental impact and strengthen its competitive position.

Frequently asked questions about the industrial waste minimisation plan

Is a minimisation plan mandatory?

Yes for initial producers of hazardous waste, under Law 7/2022. Exemptions include, among others, those generating less than 10 tonnes per year per facility or holding EMAS registration with minimisation measures. ISO 14001 also requires evidence of continuous improvement.

How often should it be reviewed?

Results must be reported to the autonomous community every four years. In practice, the most advanced companies review the plan at least once a year to keep control of their indicators.

How much can a company save?

It depends on the sector, the volumes generated and the maturity of the system. Savings come from managing less waste, recovering more and reducing raw material consumption, so they must be quantified case by case in the plan's economic evaluation.

What role does digitalisation play?

Digitalisation ensures traceability, centralises indicators and improves data quality, which makes it easier to demonstrate reductions to auditors and authorities.