No person shall discharge or deposit any of the following waste materials into any town sewer:

1. Any liquid or vapor having a temperature higher than 150 degrees Fahrenheit.
2. Any water or wastes that may contain more than 100 mg/l per liter by weight of fat, oil or grease, exclusive of soaps. However, up to 500 mg/l may be discharged by permit authorization.
3. Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquids, either solid or gas.
4. Any garbage that has not been properly shredded.
5. Any ashes, cinders, sand, mud, straw, shaving, metal, glass, bones, rags, feathers, tar, plastics, wood, paunch manure, ground paper products or other solid or viscous substances capable of causing obstruction to the flow in sewers or other interference with the proper operation of the treatment works.
6. Any waters or wastes having a stabilized pH 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 town.
7. Any water or wastes having a biochemical oxygen demand in excess of 300 mg/l by weight. However, up to 500 mg/l may be discharged by permit authorization.
8. Any waters or wastes containing more than 300 mg/l by weight of suspended solids. However, up to 500 mg/l may be discharged by permit authorization.
9. Any waters or wastes having an objectionable color that is not removable in the existing sewage treatment plant processes.
10. Any waters or wastes containing a toxic or phosphorus substance or any other materials in sufficient quantity to injure or interfere with any waste treatment process, or constitute a hazard to humans or animals, or create any hazard in the receiving stream at the sewage treatment plant.
11. 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.
12. Any noxious or malodorous gas or substance capable of creating a public nuisance.
13. Any waters or wastes containing more than 200 mg/l of chlorides. However, up to 500 mg/l may be discharged by permit authorization.
14. Any new connections from inflow sources into the sanitary sewer system.
15. Any water or wastes having an ammonia concentration in excess of 30 mg/l by weight when expressed as nitrogen.
16. Stormwater, surface water, groundwater, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, cooling water and unpolluted industrial wastewater, unless specifically authorized by the director.

(Ord. of 4-5-93, § II(1))