Another point taken was that the jury were told that they might give aggravated damages for the sewage that was sent on to the land by private owners. In this connection it was complained that evidence had been admitted as to the sewage being allowed to pass from private residences into other public drains and channels and thence into the defendants' drain upon the plaintiff's land. When, however, the whole of the charge is looked at, it is evident that the jury were told in effect (1) that they could not find any cause of action against the defendants by reason only of the sewage in question being allowed to enter the public channels and so passing on to the land of the plaintiff, and (2) that they might give aggravated - that is, additional - damages for the contaminated condition of the storm water beyond that which they would have given if the storm water had not in fact been so contaminated. Both directions were right. As to the first: unless the private owners had been "permitted," that is, authorized expressly or impliedly, by the Council to pour sewage into the drain, so as to make the Council a participant in the act, the Council would not be liable for the mere fact that the sewage passed to the plaintiff's land (Malzy v. Eichholz[6]). As to the second: while the passage of the unauthorized sewage would not per se give a cause of action against the Council, it is quite a different matter where the cause of action already exists by reason of the Council negligently leaving storm water on the plaintiff's land so as to be a continuing nuisance and with full knowledge that it has been rendered foul, and is day after day over a substantial period of time being rendered foul, by persons pouring sewage into the drain. The water so remaining, whether contaminated or not, should have been removed by the Council. They knew, or ought to have known, of its filthy condition, and still left it. This entirely distinguishes the case from Attorney-General v. Dorking Union[7]. They are, in our opinion, responsible for the damage naturally resulting from leaving their own faultily constructed and improperly maintained drain in the state in which it was to their actual knowledge. The quantity and concentration of filth-impregnated storm water on the plaintiff's land was manifestly greater than would have been the case had the Council been altogether inactive in relation to the drain. That is not mere non-feasance. (See McClelland v. Manchester Corporation[8]). In our opinion the position as to this is simple, and does not call for any extended examination of authorities.