If any occupied house within the district of any local authority other than the local authority of a burgh is without a proper supply of wholesome water at or reasonably near the same, the local authority shall require the owner to obtain such supply and to do all such works as may be necessary for that purpose, and failing his doing so, within twelve months after due notice, the local authority may themselves obtain such supply and for that purpose may use their powers of acquiring land by agreement or otherwise under this Act; and may, for the purpose of obtaining such supply, enter upon the premises and execute all such works as may be necessary; and the local authority may recover in a summary manner from the owner the whole or a reasonable part of the expenses incurred by them under this section : Provided that where the owners of two or more houses have failed to comply with the requirements of the notice served on them, under this section, and the local authority might under this Act execute the necessary works for providing a water supply for each house, the local authority may, if it appears to them desirable and no greater-expense would be occasioned thereby, execute works for the joint supply of water to those houses, and apportion the expenses as shall be just, and further provided that if any question shall arise under this section it shall be determined summarily by the sheriff who shall have regard to all the circumstances of the case, and whose decision shall be final. Provided that nothing in this section shall relieve the local authority from the duty of providing their district or any part thereof with a supply of water, where a general scheme for such supply is required, and can be carried out at a reasonable cost.