Local Government (Water Pollution) Act, 1977, (Control of Hexachlorocyclohexane and Mercury Discharges) Regulations, 1986.

These Regulations prescribe quality standards to be applied by local and sanitary authorities when licensing discharges of effluents containing hexachlorocyclohexane or mercury to waters or to sewers under Sections 4 of the Local Government (Water Pollution) Act, 1977. In granting a licence for the discharge of trade effluent from a new plant, a local authority or sanitary authority shall have regard to the best available technology where necessary for the elimination of pollution and to any guidelines which may be issued by the Minister specifying the best available technology in relation to particular circumstances or particular classes of plant. A local authority or sanitary authority shall review a licence in respect of trade effluent referred to in article 4 and 5 at least every four years.