Public Health (Health and Sanitation) (Prevention of Defilement of Rivers and Streams) Regulations (Cap. 189).

These Regulations prohibit the placing of dwellings, premises for the keeping of livestock, slaughterhouses, etc. near springs, natural rivers of water and water courses except under and in accordance with any conditions in a permit granted by a medical officer of health. Any such premises or any collection of water, sewage, dung, manure, rubbish, refuse, garbage or similar fluid or solid matter or any sewer, ditch or drain so situated that any fluid or matter therefrom can defile any river or stream shall be deemed to be a "nuisance" within the meaning of section 16 of the Public Health Act and provisions of that Act for the investigation, remedying, abatement, prosecution, and punishment thereof shall apply.