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LIFEH2OBUS, a project within the European Commission’s LIFE program, aims to evaluate water usage in the bus sector during vehicle cleaning. This research is pioneering because water conservation in this field remains largely unexplored, lacking specific standards to prevent unnecessary water consumption. A single bus cleaning session requires around 300 litres of water, occurring four times a week per bus, totalling 43 million cubic meters annually for the European bus fleet. Furthermore, bus washing is energy-intensive, and most garages lack wastewater treatment facilities. LIFEH2OBUS and this paper assess the implementation of three innovative water-saving technologies in bus garages across Europe: water reclamation, water reclamation and harvesting, and waxing. A cost-benefit analysis reveals an impressive 84% reduction in water consumption after one year, saving 37 million litres for the test fleet of 680 buses. Scaling up to 50% of the European transit fleet over five years could save 18 billion litres/year, equivalent to 42% of the transport sector’s water use, reduce energy consumption by 1,159 GWh, and cut 504 ktCO2eq greenhouse gas emissions, saving 151 million Euros. This paper introduces this technological process and demonstrates its substantial water and energy-saving potential in the transport sector, advancing scientific knowledge in this field.

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Water Management As a New Saving Opportunity for Bus Managers: Evidence from the LIFEH2OBUS Project

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Matthew Robinson,
  • Maria Vittoria Corazza

摘要

LIFEH2OBUS, a project within the European Commission’s LIFE program, aims to evaluate water usage in the bus sector during vehicle cleaning. This research is pioneering because water conservation in this field remains largely unexplored, lacking specific standards to prevent unnecessary water consumption. A single bus cleaning session requires around 300 litres of water, occurring four times a week per bus, totalling 43 million cubic meters annually for the European bus fleet. Furthermore, bus washing is energy-intensive, and most garages lack wastewater treatment facilities. LIFEH2OBUS and this paper assess the implementation of three innovative water-saving technologies in bus garages across Europe: water reclamation, water reclamation and harvesting, and waxing. A cost-benefit analysis reveals an impressive 84% reduction in water consumption after one year, saving 37 million litres for the test fleet of 680 buses. Scaling up to 50% of the European transit fleet over five years could save 18 billion litres/year, equivalent to 42% of the transport sector’s water use, reduce energy consumption by 1,159 GWh, and cut 504 ktCO2eq greenhouse gas emissions, saving 151 million Euros. This paper introduces this technological process and demonstrates its substantial water and energy-saving potential in the transport sector, advancing scientific knowledge in this field.