Urban WastewaterTreatment Directive
Obligations and milestones

Integrated plans

A coordinated response to storm-water overflows, urban runoff and impacts on receiving waters.

Back to the obligation overview
Topic context

What is changing and why preparation matters

Integrated plans connect collecting systems, storm-water overflows, urban runoff, treatment capacity and receiving-water status in one long-term framework.

They are mandatory for drainage areas of agglomerations of at least 100,000 p.e. and for selected risk-based agglomerations between 10,000 and 100,000 p.e.

Timeline

Obligations and their practical meaning

Each block has a permanent link. Always verify the exact scope against the agglomeration and plant profile and the final Czech implementation.

Preparation and planning

Relevant steps: Integrated plan for a risk-listed agglomeration; Overflow and urban-runoff monitoring.

No later than: 22. June 2028#integrated-plan-risk-list

Integrated plan for a risk-listed agglomeration

Prepare coordinated measures where overflows or polluted urban runoff create a documented risk.

What this means in practice

Combine network and rainfall data with modelling, environmental objectives, preventive and technical measures, a timetable and clear responsibilities.

  • Risk evidence, modelling, baseline assessment and a programme of measures.
  • Implementation period: 2027–2028.
  • Keep the evidence traceable and ready for reporting.

Scope and evidence

Who it applies to: Risk-listed agglomerations between 10,000 and 99,999 p.e.

Evidence: Risk evidence, modelling, baseline assessment and a programme of measures.

Why this step matters

Rainfall impacts cannot be solved efficiently through isolated construction projects; prevention and blue-green measures need catchment-wide coordination.

Legal context: Article 5(2), (3) and (7), and Annex V.

Preparation: with the integrated plan#stormwater-monitoring-setup

Overflow and urban-runoff monitoring

Select representative points and measure or model pollution from overflows and separate storm-water outlets.

What this means in practice

Combine network and rainfall data with modelling, environmental objectives, preventive and technical measures, a timetable and clear responsibilities.

  • Site selection, monitoring or modelling method, concentrations and load estimates.
  • Implementation period: 2027–2028.
  • Keep the evidence traceable and ready for reporting.

Scope and evidence

Who it applies to: Large agglomerations and listed risk agglomerations with relevant discharge points.

Evidence: Site selection, monitoring or modelling method, concentrations and load estimates.

Why this step matters

Rainfall impacts cannot be solved efficiently through isolated construction projects; prevention and blue-green measures need catchment-wide coordination.

Legal context: Article 21(2), linked to Article 5.

Broader requirements

Coordinate collecting systems, overflows, urban runoff, treatment capacity and receiving waters in one plan.

No later than: 31. December 2033#integrated-plan-large-2033

Integrated plan for a large agglomeration

Coordinate collecting systems, overflows, urban runoff, treatment capacity and receiving waters in one plan.

What this means in practice

Combine network and rainfall data with modelling, environmental objectives, preventive and technical measures, a timetable and clear responsibilities.

  • Baseline assessment, objectives, measures, timetable and assigned responsibilities.
  • Implementation period: 2032–2033.
  • Keep the evidence traceable and ready for reporting.

Scope and evidence

Who it applies to: Drainage areas of agglomerations of at least 100,000 p.e.

Evidence: Baseline assessment, objectives, measures, timetable and assigned responsibilities.

Why this step matters

Rainfall impacts cannot be solved efficiently through isolated construction projects; prevention and blue-green measures need catchment-wide coordination.

Legal context: Article 5(1) and (7), and Annex V.

Advanced implementation

Relevant steps: Integrated plan for a large agglomeration; Integrated plan for a risk-listed agglomeration.

Period: at least once every six years#integrated-plan-large-review-2039

Integrated plan for a large agglomeration

Coordinate collecting systems, overflows, urban runoff, treatment capacity and receiving waters in one plan.

What this means in practice

Combine network and rainfall data with modelling, environmental objectives, preventive and technical measures, a timetable and clear responsibilities.

  • Baseline assessment, objectives, measures, timetable and assigned responsibilities.
  • Implementation period: 2039.
  • Keep the evidence traceable and ready for reporting.

Scope and evidence

Who it applies to: Drainage areas of agglomerations of at least 100,000 p.e.

Evidence: Baseline assessment, objectives, measures, timetable and assigned responsibilities.

Why this step matters

Rainfall impacts cannot be solved efficiently through isolated construction projects; prevention and blue-green measures need catchment-wide coordination.

Legal context: Article 5(1) and (7), and Annex V.

No later than: 31. December 2039#integrated-plan-risk-2039

Integrated plan for a risk-listed agglomeration

Prepare coordinated measures where overflows or polluted urban runoff create a documented risk.

What this means in practice

Combine network and rainfall data with modelling, environmental objectives, preventive and technical measures, a timetable and clear responsibilities.

  • Risk evidence, modelling, baseline assessment and a programme of measures.
  • Implementation period: 2039.
  • Keep the evidence traceable and ready for reporting.

Scope and evidence

Who it applies to: Risk-listed agglomerations between 10,000 and 99,999 p.e.

Evidence: Risk evidence, modelling, baseline assessment and a programme of measures.

Why this step matters

Rainfall impacts cannot be solved efficiently through isolated construction projects; prevention and blue-green measures need catchment-wide coordination.

Legal context: Article 5(2), (3) and (7), and Annex V.

Long-term objectives

Prepare coordinated measures where overflows or polluted urban runoff create a documented risk.

Period: at least once every six years#integrated-plan-risk-review-2045

Integrated plan for a risk-listed agglomeration

Prepare coordinated measures where overflows or polluted urban runoff create a documented risk.

What this means in practice

Combine network and rainfall data with modelling, environmental objectives, preventive and technical measures, a timetable and clear responsibilities.

  • Risk evidence, modelling, baseline assessment and a programme of measures.
  • Implementation period: 2045.
  • Keep the evidence traceable and ready for reporting.

Scope and evidence

Who it applies to: Risk-listed agglomerations between 10,000 and 99,999 p.e.

Evidence: Risk evidence, modelling, baseline assessment and a programme of measures.

Why this step matters

Rainfall impacts cannot be solved efficiently through isolated construction projects; prevention and blue-green measures need catchment-wide coordination.

Legal context: Article 5(2), (3) and (7), and Annex V.

Related content

Interpretations and important terms

Find more detail on legal concepts and the Czech approach in the related interpretations and glossary.

Related interpretations and tools

Glossary terms