The source of water domestic use and fire protection shall be the city system. The subdivider shall provide and install water mains, together with fire hydrants and all necessary fittings, to bring water within convenient connection distance to all lots in his subdivision. The size and kind of pipe and fittings, the manner of installation, and the installation itself, whether by the water department or by the subdivider under the supervision of the water department of the city. If, in the opinion of the water department, it is desired to install water mains and fittings of a size larger than adequate for domestic use and fire protection of the subdivision in question, the additional expense incurred may be borne by the water department. (see chapter 18.36)

Design of the water system shall be in accordance with the Grant County Health Department and the State Department of Ecology requirements and standards.