This is where you’ll find our latest company news, announcements, employment opportunities and links to our publications. Our consultants also use the blog to share insight and opinion on chemicals risk assessment and related topics. If you’re interested in anything you read here please leave a comment or contact us.
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Weight of Evidence Assessments – Whose evidence can be trusted
Accusations of bias as a result of funding sources, without any supporting evidence, are unhelpful. Data should always be assessed on its merits.
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Health and Safety in Laboratories
Understanding the need for sharing health and safety best practice in the laboratory.
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Updates to the bio-met metal bioavailability tool planned to extend applicability range
bio-met.net is a website developed to guide those interested in using bioavailability-based approaches for assessing the risk of metals in the freshwater aquatic environment, particularly within the EU Water Framework Directive. Updates to the bio-met bioavailability tool have been announced that will extend the applicability range of the model to address the concerns of regulators, particularly the German UBA.
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Stability of Trace Substances in Wastewater Effluents
The results of a project investigating the stability of priority pollutants in wastewater effluents has been published in Analytical Letters. The project was undertaken as part of the UK Water Industry Chemicals Investigations Programme (CIP)
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The Society for Environmental Toxicology And Chemistry (SETAC)
Wca environment are active supporters of the Society for Environmental Toxicology And Chemistry (SETAC). We believe that SETAC provides the perfect platform for highlighting our work within a global network that effectively links environmental research with regulatory and industrial science needs.
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SETAC Global Advisory Group on Endocrine Disrupter Testing & Risk Assessment (EDTRA)
SETAC has approved the establishment of EDTRA, a new Global Advisory Group on Endocrine Disrupter Testing and Risk Assessment.
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Derivation of Chemical Limit Values for Water Quality: An International Perspective
wca have recently completed a number of reviews and assessments of the guidance applied in different countries and regions to derive chemical limit values for surface water. This work included comparisons of the procedures and methods used to assess ecotoxicological data and derive different types of water quality limit values, and also assessed the potential for limit values derived in one jurisdiction to be adopted or adapted for use elsewhere.
What is very clear is that there are considerable differences between countries and regions with respect to the specific procedures used in their derivation. -
wca environment contribute to the development of new screening criteria for contaminated land risk assessment
I am working with a team of risk assessors, toxicologists and statisticians to deliver Category 4 Screening Levels (C4SLs) and provide technical guidance to support Defra’s recently revised Statutory Guidance for Part 2A of the Environmental Protection Act 1990.
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Aquatic Toxicology Symposium
Earlier this summer I had the opportunity to attend the second Aquatic Toxicology Symposium. This is a small and informal meeting where various research leaders in the relevant area meet up to discuss their findings. The first ATS was held at a former borax mine in Arizona, and in keeping with the theme this meeting [...]
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EU commission publishes plan for chemical mixtures
The EU commission has recently published it’s long anticipated communication on addressing the issue if chemical mixtures in the EU. Many think that the Commission has not made as much progress as anticipated.

