Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-226 - Waste discharge general permit program
Section 173-226-100 - Prohibited discharges

(a) Discharge any radiological, chemical, or biological warfare agent or high-level radioactive waste into waters of the state;

(b) Discharge any pollutants that the Secretary of the Army acting through the Chief, Corps of Engineers, finds would substantially impair anchorage and navigation;

(c) Discharge any pollutant which the regional administrator, not having waived his/her right to object pursuant to section 402(e) of the FWPCA, has objected in writing pursuant to section 402(d) of the FWPCA;

(d) Discharge any pollutant in conflict with plans or amendment thereto approved pursuant to section 208(b) of the FWPCA;

(e) Discharge any pollutant subject to a toxic pollutant discharge prohibition under section 307 of the FWPCA; or

(f) Discharge any dangerous waste as defined in the Dangerous waste regulations, chapter 173-303 WAC, into a subsurface disposal system such as a well or drainfield.

(a) Waste materials that pass through the treatment works untreated or interfere with its operation or performance;

(b) Liquids, solids, or gases that, by reason of their nature or quantity, are or may be sufficient either alone or by interaction to:

(c) Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the system;

(d) Any wastewater having a pH less than 5.0 or greater than 11.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the system, unless the system is specifically designed to accommodate such discharge and the discharge is authorized by a permit under this chapter;

(e) Wastewater that would cause the influent temperature to exceed 40°C (104°F), unless the system is specifically designed to accommodate such discharge and the discharge is authorized by a permit under this chapter. In any case, any wastewater having a temperature which will interfere with the biological activity in the system is prohibited;

(f) Waste materials, including, but not limited to, oxygen demanding waste materials (BOD, etc.) released in either a slug load or continuous discharge of such volume or strength as to cause interference to the system;

(g) Any other discharge prohibited by federal or state law or regulation; and

(h) Any of the following discharges, unless approved by the department under extraordinary circumstances (such as lack of direct discharge alternatives due to combined sewer service or need to augment sewage flows due to septic conditions):