Payment of cost of house sewers and collecting sewers

(1) Where a person fails to comply with the requirements of a notice given to him under section 112 (1) and the licensee executes the work under sub-section (3) thereof, such percentage of the expenses as are incurred by the licensee in constructing and installing the water-closet and in the laying and constructing of any house sewer, when there is no collecting sewer system, and of the requisite appliances and accessories thereto, shall be a debt due and to be paid to the licensee by the owner of the premises in respect of which the house sewer is 100 laid and constructed, and in default may be recovered as a civil debt. (2) Such percentage of the expenses as may be prescribed, as are incurred by the licensee in the laying and constructing of any collecting sewer system shall be a debt due and to be paid to the licensee by the owners of those premises from which sewage is conveyed into the collecting sewer in proportion to the number of points at which sewage is taken into the sewerage system from the premises of each owner, and in default, may be recovered as a civil debt. (3) Where a person complies with the requirements of a notice given to him under section 112(1), the complementary proportion of the percentage of the expenses prescribed, if any, that are reasonably incurred in laying the house sewer, when there is no collecting sewerage system, and of the requisite appliances and accessories, together with an additional sum, if the licensee so resolves, not exceeding five per cent, shall be paid to him by the licensee. (4) Payment of the expenses referred to in sub-sections (1) and (2) shall be made within thirty days after demand in writing by the licensee, except that any owner who does not within the period of thirty days pay those expenses– (a) shall pay them by annual instalments of one- fifteenth part of the whole sum originally due, with interest on the principal amount from time to time remaining unpaid at the rate of not less than six per centum per annum; and (b) may on seven days’ notice in writing to the licensee, pay off the balance or part thereof of the principal amount and any interest that may be then due.