Sanitary installations and components therefore, including toilets and associated sanitary piping, flushing apparatus, grey-water separation apparatus; septic tank systems and components thereof; grey-water separation, treatment and distribution systems and components thereof, including subsurface irrigation conduits, pipes and fittings, irrigation emitters and hoses; filters and flushing apparatus for use in grey-water separation and distribution; watering installations

Plumbing services; installation, maintenance, enhancement or repair of sanitary installations, including septic tank systems, grey-water systems and/or sub-surface irrigation systems and components thereof; drainage services, including the installation, maintenance, enhancement or repair of grey-water distribution systems, including the evaluation of the suitability of soils for sub-surface irrigation and drainage