TOXICITY TRACING IN SEWERS - FINAL REPORT
Report No FR0158
S C Nixon
To demonstrate the use of bioassays to locate the source of toxic components in sewage.
Utility discharges are likely to be monitored for Red List substances and control may require tracing the sources and eliminating them. In addition, toxic substances discharged to sewerage systems may have inhibitory effects on the sewage treatment process.
The proposed fieldwork programme was not undertaken due to the contract being postponed by the Foundation for Water Research who required funds for higher priority research. Up until this time effort was concentrated on identifying suitable case-study sites in the North West and Severn Trent Water areas. This work has shown that:
IV RESUME OF CONTENTS
Two locations have been identified as potential case study sites. Each has a higher industrial component than that in the Weymouth sewerage system used in the pilot studies of 1989/90 (FR 0084).
The sampling strategy and the bioassays to be used in the work are outlined, and the need for samplers which are safe for use in sewers and confined spaces has been identified. Finally the use of toxicity-based consents in the UK and by the EPA in the United States is discussed.
Copies of the Report are available from FWR, price £15.00 less 20% to FWR Members