Heathenish cults and forbidden manners and customs are a pollution to the land and a deep insult to the true God.
They may also take proceedings in respect of the pollution of a stream by any solid or liquid sewage matter.
And this is fulfilled when he obeys the commands of law and the true order; when he tends his cattle and fields, in contrast with the lawless and predatory nomad (Dahae); when he wars on all harmful and evil creatures, and on the devilworshippers; when he keeps free from pollution the pure creations of Ahuramazdauire foremost, but also earth and water; and, above all, when he practises the Good and True in thought, word and work.
Under these acts a sanitary authority is authorized to take proceedings to restrain interference with the due flow of a stream or the pollution of its waters by throwing into it the solid refuse of any manufactory or quarry, or any rubbish or cinders, or any other waste or any putrid solid matter.
Appointed a member of the second royal commission on the pollution of rivers in 1868, he was provided by the government with a completely-equipped laboratory, in which, for a period of six years, he carried on the inquiries necessary for the purposes of that body, and was thus the means of bringing to light an enormous amount of valuable information respecting the contamination of rivers by sewage, trade-refuse, &c., and the purification of water for domestic use.