This document establishes the legal framework and operational regulations governing the Portsmouth Water company under the authority of the British government. The text serves as a formal statutory instrument, detailing the specific powers, obligations, and administrative requirements imposed upon the utility provider. It functions as a primary source for understanding the regulatory environment of water infrastructure management during the 1990 period.

Legal professionals and historians utilize this document as a reference for the specific regulatory constraints applied to Portsmouth Water in 1990. The text is highly technical and intended for use within administrative or legal research contexts.