definition
1. Storm drain gutter : A gutter which carries storm and surface waters and drainage but excludes sewage and polluted industrial wastes.
2. Sanitary sewer : A sewer that carries sewage and to which storm surface and ground waters are not intentionally admitted.
3. Wastewater sewer : A sewer which carries polluted industrial waste (treated water form wastewater treatment facilities.)
4. Water consumption : A quantity of ater that is consumed by the general using