The Environment and Health Research Laboratory (LERES) of EHESP is accredited since 2000 by COFRAC (according to the ISO 17025 standard) and recognized by ministries in charge of health and environment.  The analytical production for private and public customers is supported by methodological and technical developments mainly through academic and/or industrial collaborative research projects.

The LERES research strategy is based on an integrated multidisciplinary approach to lab and field analysis meant to  improve the impact of contamination and exposure studies, and it aims at making a significant contribution to risk assessment studies and the development of more efficient decision support systems for end-users.

Sanitary risks for human health from resource to tap water

Water availability and quality have become a major concern for food security, natural ecosystems and population protection. A safe and reliable drinking water supply is vital for public health as well as for economic development and other societal functions. Drinking water supplies systems are complex and the entire system from source to tap, from catchment to consumer, needs to be considered in order to guarantee safe drinking.

In this context, conventional water management strategies alone cannot cope with this complexity and anticipating approaches are required to face, identify and characterize new water quality threats and issues.

LERES platform has identified several of these critical issues and develops, in addition to conventional control methods (Cofrac), methodologies and/or tools to increase knowledge about their occurrence and consequences. These development aims to offer new and adapted decision support systems for a better and more efficient risk management of drinking water systems allowing a thorough evaluation of risk acceptance and identification of the most suitable measures to reduce unacceptable risks

Development of indoor contamination measurements for exposure and risk assessment

The indoor environment is a complex mixture of agents. To evaluate its public health impact, epidemiologic surveys or risk assessment are needed. In both cases, exposure assessment is a crucial stage.  It can be achieved either by direct measurement of agents or their metabolites in human body, or indirectly by measurements in different environmental media according to inhalation, ingestion or dermal exposure. LERES platform has developed competences in measurements of environmental matrices like air, settled dust or surfaces for different agents like volatile organic compounds (VOCs), semi-volatile compounds (SVOCs), metals (especially lead), microbes (bacteria, virus, fungi).This risk and exposure oriented research is a collaborative work with IRSET research teams with an integrative approach between epidemiologists, risk assessors, toxicologists, pharmacists, metrologists, biostatisticians, physicians .