F2to ensure that any water so supplied is wholesome at the time of supply; and

so far as reasonably practicable, to ensure, in relation to each source or combination of sources from which F3water is so supplied, that there is, in general, no deterioration in the quality of the water which is supplied from time to time from that source or combination of sources.

when supplying water to any premises for domestic or food production purposes, in accordance with F62the licensee's retail authorisation or restricted retail authorisation, to ensure that the water is wholesome at the time of supply; and

so far as reasonably practicable, to ensure, in relation to each source or combination of sources from which F72that licensee supplies water to premises for domestic or food production purposes, in accordance with F52the licensee's retail authorisation or restricted retail authorisation, that there is, in general, no deterioration in the quality of the water which is supplied from time to time from that source or combination of sources,

it has ceased to be wholesome after leaving the undertaker’s pipes but while in a pipe which is subject to water pressure from a water main or which would be so subject but for the closing of some valve; and

it has so ceased in consequence of the failure of the undertaker, before F8the water is supplied, to ensure that such steps are taken as may be prescribed for the purpose of securing the elimination, or reduction to a minimum, of any prescribed risk that the water would cease to be wholesome after leaving the undertaker’s pipes.

it has ceased to be wholesome after leaving the relevant pipes but while in a pipe which is subject to water pressure from a water main or which would be so subject but for the closing of some valve; and

it has so ceased in consequence of the failure of F48the licensee, before supplying the water, to ensure that such steps are taken as may be prescribed for the purpose of securing the elimination, or reduction to a minimum, of any prescribed risk that the water would cease to be wholesome after leaving the relevant pipes.

in relation to a water undertaker whose area is wholly or mainly in Wales, and

in relation to a water supply licensee so far as relating to licensed activities using the supply system of such a water undertaker,

to F15ensure that all such steps are taken as may be prescribed for monitoring and recording whether the water F16used for relevant supplies to premises for domestic or food production purposes is wholesome at the time of supply;

to F17ensure that all such steps are taken as may be prescribed for monitoring and recording the quality of the water from any source, or combination of sources, which F18is used or is proposed to be used for making relevant supplies to any premises for domestic or food production purposes;

to ensure that a source which F19is used or proposed to be used for making relevant supplies for domestic or food production purposes is not so used until prescribed requirements for establishing the quality of water which may be supplied from that source have been complied with;

to F20ensure that records are kept of the localities within which all the premises F21receiving relevant supplies for domestic or food production purposes F22. . . are normally supplied from the same source or combination of sources;

to F23ensure that prescribed requirements are complied with with respect to the analysis of water samples or with respect to internal reporting or organisational arrangements.

of such processes and substances; and

of products that contain or are made with such substances or materials,

F25require water undertakers or F63water supply licensees to ensure that processes, substances and products which have not been approved under the regulations or which contravene the regulations F26are not used for the purposes of or in connection with relevant supplies;

for the purposes of provision made by virtue of paragraph (a) above, require F27water undertakers and F57water supply licensees to ensure that processes, substances and products used F28for the purposes of or in connection with relevant supplies conform to such standards as may be prescribed by or approved under the regulations;

impose such other requirements as may be prescribed with respect to the use F29for the purposes of or in connection with relevant supplies of prescribed processes, substances and products;

provide for the giving, refusal and revocation, by prescribed persons, of approvals required for the purposes of the regulations, for such approvals to be capable of being made subject to such conditions as may be prescribed and for the modification and revocation of any such condition;

impose obligations to furnish prescribed persons with information reasonably required by those persons for the purpose of carrying out functions under the regulations;

require prescribed charges to be paid to persons carrying out functions under the regulations.

F31require a water undertakerto publish information about the quality of water supplied for domestic or food production purposes to any premises F32using that undertaker’s supply system; F33. . .

require a F53water supply licensee to publish information about the quality of water supplied for domestic or food production purposes to any premises by F49that licensee.

F35require any such undertaker F54or licensee to provide information to prescribed persons about the quality of water F36supplied as referred to in paragraph (a) or (aa) above (as the case may be).

shall prescribe both the information which is to be published or provided in pursuance of the regulations and the manner and circumstances in which it is to be published or provided;

may require the provision of information by a water undertaker F37or F58water supply licensee to any person to be free of charge or may authorise it to be subject to the payment by that person to the undertaker F56or licensee of a prescribed charge; and

may impose such other conditions on the provision of information by a water undertaker F38or F69water supply licensee to any person as may be prescribed.

in the case of an obligation imposed on a F50water supply licensee, supplies of water made by that supplier using a water undertaker’s supply system.

the water undertaker whose supply system is used for the purposes of supplying the water (in this section referred to as the “primary water undertaker”); and

any employer of persons, or any self-employed person, who is concerned in the supply of the water.

had no reasonable grounds for suspecting that the water would be used for human consumption; or

took all reasonable steps and exercised all due diligence for securing that the water was fit for human consumption on leaving F45the primary water undertaker's pipes or was not used for human consumption.

in the case of proceedings against a primary water undertaker, showing that the undertaker took all reasonable steps and exercised all due diligence as mentioned in that paragraph includes (among other things) showing that the relevant arrangements were reasonable in all the circumstances; and

in the case of proceedings against any other relevant person, showing that the person took all reasonable steps and exercised all due diligence as mentioned in that paragraph includes (among other things) showing that it took all reasonable steps and exercised all due diligence for securing that all aspects of the relevant arrangements for which it was responsible were properly carried out.