Subject to subsection (3) below, where a water undertaker's supply system is used for the purposes of supplying water to any premises and that water is unfit for human consumption, the relevant persons shall be guilty of an offence and liable on summary conviction, or on conviction on indictment, to a fine.
For the purposes of subsection (1) above, the relevant persons are—
For the purposes of section 210 below and any other enactment under which an individual is guilty of an offence by virtue of subsection (1) above the penalty on conviction on indictment of an offence under this section shall be deemed to include imprisonment (in addition to or instead of a fine) for a term not exceeding two years.
In any proceedings against any relevant person for an offence under this section it shall be a defence for that person to show that it—
For the purposes of paragraph (b) of subsection (3) above—
In subsection (3A) above, "relevant arrangements" means arrangements made by the primary water undertaker to ensure that all other relevant persons were required to take all reasonable steps and exercise all due diligence for securing that the water was fit for human consumption on leaving the undertaker's pipes or was not used for human consumption.
Proceedings for an offence under this section shall not be instituted except by the Secretary of State or the Director of Public Prosecutions.