DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS

Description

E03C covers domestic plumbing systems for supplying fresh water and removing waste water, along with sink designs and associated fixtures. This includes water distribution pipes, drainage systems, valves, taps, and related fittings installed in residential buildings, as well as integral sink construction and functionality. The classification encompasses both above-ground and in-wall plumbing components, pressure regulation devices, and anti-siphoning mechanisms typically found in household water systems. Related large-scale water supply infrastructure is classified separately under E03B and E03D.