A. 
No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water, or unpolluted commercial or industrial process waters into any public sanitary sewer.
B. 
Except as hereinafter provided or under conditions specifically approved and detailed, in writing, by the Board or Administrator, no person shall discharge or cause to be discharged into any public sanitary sewer any of the following described waters or wastes:
(1) 
Any water or waste which may contain more than 100 parts per million, by weight, of fat, oil, or grease.
(2) 
Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, or gas.
(3) 
Any garbage resulting from preparation, cooking, and dispensing of food which has not been properly shredded.
(4) 
Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, or any other solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works.
(5) 
Any waters or wastes having a pH value lower than 5.5 or higher than 9.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewerage works.
(6) 
Any waters or wastes containing a toxic, hazardous, or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, or create any hazard in the receiving waters of the sewage treatment plant.
(7) 
Any waters or wastes containing suspended solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plant.
(8) 
Any noxious or malodorous gas or substance capable of creating a public nuisance.
(9) 
Any waters or wastes that would require special wastewater testing, monitoring, treatment technologies, operations or facilities or result in new or would require more stringent final effluent standards, conditions and requirements on the Sanitary District's VPDES permit.
(10) 
Any waters or wastes prohibited or restricted from being discharged into the Sanitary District's facilities by the laws or regulations of the Commonwealth of Virginia or the federal government.
A. 
Grease, oil, and sand interceptors shall be provided when, in the opinion of the Sanitary District, they are necessary for the proper handling of liquid wastes containing such ingredients or any other ingredients of a flammable or harmful nature, except that such interceptors shall not be required for private living quarters or dwelling units. All restaurants, schools, hospitals, nursing homes and other institutional, commercial and industrial food preparers shall install grease interceptors.
B. 
All interceptors shall be of a type and capacity approved by the Administrator or his/her agent. They shall be of substantial construction, watertight, and equipped with easily removable covers which, when bolted in place, shall be gastight and watertight.
C. 
Where installed, all grease, oil, and sand interceptors shall be maintained by the owner, at his/her expense, in continuously efficient operation at all times. The Sanitary District Supervisor or his/her agent may inspect interceptors and appurtenant facilities to ensure proper maintenance and operation by the owner.
A. 
The admission or proposed admission into the public sewers of any waters or wastes resulting from any industrial or manufacturing process, product, or comparable activity shall be subject to the review and approval of the Sanitary District.
B. 
When necessary, in the opinion of the Board or Administrator, the owner of any such industrial or manufacturing establishment shall provide, at his/her expense, such preliminary treatment of his/her industrial waters or wastes as may be required to reduce objectionable characteristics or constituents to ensure compliance with the Sanitary District's VPDES permit's final effluent standards, conditions and requirements and/or to satisfy any other condition which the Board or Administrator may decide is advisable in order to allow the admission of such waters or wastes into the sanitary sewers.
C. 
Six copies of plans and specifications and other pertinent information relating to required or proposed preliminary treatment facilities shall be submitted for the review and approval of the Administrator. No construction of any such facilities shall be started until such approval has been obtained in writing.