Direct sampling from works and CSOs
provides the best quality empirical evidence-base
for water industry plant operators

Wastewater Analysis & Treatment Efficacy

A credible evidence-base to define the sewage infra-structure contribution to microbial and nutrient flux, at the catchment scale, is a central requirement of the EU Water Framework Directive. CREH has a track record of successful quantification of pollutant flux measurement from treated effluent and intermittent discharge (network CSOs and storm tank overflows) and their relative contributions in both low flow periods and following rainfall events. The latter comprise a particularly dynamic phase in catchment delivery when both diffuse catchment fluxes and infrastructure intermittent sources are in operation.

Direct sampling from works and CSOs provides the best quality empirical evidence-base for water industry plant operators, regulators and the policy community.

High quality data from direct sampling of sewage fluxes also provides excellent calibration for sewer modelling by the water industry and engineering consultancies.

The CREH Analytical laboratory has the capability to carry out laboratory experiments using a collimated beam (Collimated Beam Testing (CBT)) of UV light to generate a UV dose-response relationship for a particular organism that can be used in the design and the validation of UV disinfection systems.

CREH Ltd. has demonstrated sound management of Health & Safety in accordance with legislation and has attained CHAS accreditation.  Our field staff have appropriate H&S training including NEBOSH certification and where relevant, specific training for working at height, confined space awareness, etc. We supply our staff with the most appropriate safety equipment and clothing and produce site specific risk assessments and method statements in accordance with client requirements for sewage works.

CREH Ltd