Water supply ~ an adequate supply of cold water of drinking
quality should be provided to every residential building and a
drinking water tap installed within the building. The installation
should be designed to prevent waste, undue consumption, misuse,
contamination of general supply, be protected against corrosion
and frost damage and be accessible for maintenance activities. The
intake of a cold water supply to a building is owned jointly by the
water authority and the consumer who therefore have joint
maintenance responsibilities.
Water Supply---Basic Requirements