Water Reflections No. 2 – Treating Surface Water Drainage

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Answer from: , Independent environmental consultant

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“Of course the concentrations are high – you sampled during a period of heavy rain” thus I was told off when trying to interpret data from a survey of the Ditton brook near Liverpool in the mid 1970s. 

No-one talked about diffuse pollution in those days; the awareness that high flow conditions often meant higher concentrations of various pollutants, especially suspended solids, was merely applied to advice on when to sample to show impacts of major point sources such as municipal sewage works discharges. 

Read the full paper here.


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