S.L. 545.8 Art. 5Effluent discharge.

No person shall discharge from any premises into the public sewer any effluent containing any material which alone, or in combination with the contents of the sewer, is likely -

(a) to damage the sewerage system, including pipework, sumps and equipment, or block, cause overflows or in any other way interfere with the free flow of the contents of the sewer. Such material includes excessive amounts of the following: - scum forming substances, including straw, fats, hair and feathers; - gross solids, including animal dung, bones and vegetable material; - acids;

(b) to constitute a health hazard to sewer maintenance personnel by the emission of flammable, explosive, toxic, irritating or asphyxiating gases or vapours. Such material includes excessive amounts of the following: - volatile organic compounds, including solvents; - substances rich in sulphur and sulphur-containing compounds which tend to evolve hydrogen sulphide under sewer conditions;

(c) to interfere with treatment and recovery of liquid and solid waste. Such material includes excessive amounts of the following: - substances which create a high oxygen demand, including biodegradable organic compounds, total Kjeldahl nitrogen; - non-biodegradable organic matter; - surfactants, salts, biocides; - nitrification inhibitors; - heavy metals; - boron and other substances which render the material recovered from waste unfit for re-use;

(d) to bring about adverse aesthetic or other objectionable effects on the marine ecosystem upon discharge into the marine environment. Such material includes excessive amounts of the following: - floating materials; - settleable solids which smother benthic marine life; - substances which are toxic to marine life.