Section 13 Commissioners to cause a map of the district within the limits of the special Act to be made, and to be open to inspection.

The commissioners shall, as soon as conveniently may be after the passing of the special Act, procure or cause to be made a survey and map of the district within the limits of the special Act, on a scale of not less than sixty inches to a mile, and shall cause to be marked thereon the course of all the existing sewers and drains belonging to them or under their care or management, and, as far as can be ascertained, the lines of pipes or conduits for the collection and distribution of water, the course of the pipes for the distribution of gas, and such other works, with such other particulars as may be necessary in order to show the underground works within the said district, and shall cause the said map to be from time to time corrected, and such additions to be made thereto as may show the sewers and drains for the time being belonging to the commissioners, and such other pipes and underground works as aforesaid; and such map and plan, or a copy thereof, with the date expressed thereon of the last time when it was so corrected, shall be kept in the office of the commissioners, and shall be open at all seasonable hours to the inspection of the owners or occupiers of any lands within such district.