'Taken together this present report and Volume 3 ["Report of a river pollution survey of England and Wales, 1973"] provide information on all controlled waters covered by the Rivers (Prevention of Pollution) Acts, 1951 to 1961' - Preface.
River pollution survey of England and Wales, updated 1973 : river quality and discharges of sewage and industrial effluents. ISBN 0117509124. Published by H.M.S.O. in 1975. Publication and catalogue information, links to buy online and reader comments.