14. These Regulations do not apply to—
(a)a concession contract awarded to provide or operate fixed networks intended to provide a service to the public in connection with the production, transport or distribution of drinking water;
(b)a concession contract awarded to supply drinking water to such networks;
(c)a concession contract for either or both of the following—
(i)hydraulic engineering projects, irrigation or land drainage, provided that the volume of water to be used for the supply of drinking water represents more than 20% of the total volume of water made available by such projects or irrigation or drainage installations; or
(ii)the disposal or treatment of sewage,
if the contract is connected with an activity referred to in paragraph (a) or (b).