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crossedthread-
Looking into the data, Hammond noticed something even more shocking: works were venting untreated sewage despite there being no rain at all. Anglers had been complaining about such “dry spills” for years, but until Hammond came along, no one had been able to prove their existence.
Good/horrifying read thanks.
hoefla
The sewage corresponds to rain (combined sewer overflows) at least in central london.