Paragraph 3

every local authority whose area is comprised wholly or partly in the proposed control area;

any statutory body the exercise of whose functions may be affected by the control order if made;

any body or association appearing to the river purification authority to represent persons who in their opinion may be affected by the control order if made; and

every person known to the river purification authority to have any interest in any land to which the control order applied for would relate:

Provided that where it appears to the Secretary of State, from representations made to him by the authority, that compliance with head (d) of this sub-paragraph would be unduly onerous, it shall be sufficient compliance if the authority, having submitted proposals in this regard to the Secretary of State, take such steps as he may direct as respects service of the said copy documents upon such of the persons referred to in the said head (d) as in his opinion may be materially affected by the control order if made, and as respects further publication of those documents.