Iowa Administrative Code › Agency 567 - Environmental Protection Commission › Title IV - Wastewater Treatment and Disposal › Chapter 62 - Effluent and Pretreatment Standards: Other Effluent Limitations or Prohibitions › Rule 567-62.1 - Prohibited Discharges

Current through Register Vol. 47, No. 3, July 24, 2024
(1) The
				discharge of any pollutant from a point source into a navigable water is
				prohibited unless authorized by an NPDES permit. For purposes of this subrule,
				an NPDES permit includes an NPDES permit issued by the administrator prior to
				approval of the Iowa NPDES program.
(2) The discharge of any radiological,
				chemical or biological warfare agent or high-level radioactive waste into
				navigable waters is prohibited.
(3)
				Any discharge which the secretary of the army acting through the chief of
				engineers finds would substantially impair anchorage and navigation is
				prohibited.
(4) Any discharge to
				which the regional administrator has objected in writing pursuant to any right
				to object provided the administrator in Section 402(d) of the Act is
				prohibited.
(5) Any discharge from
				a point source which is in conflict with a plan or amendment thereto approved
				pursuant to Section 208(b) of the Act is prohibited.
(6) The discharge of wastewater into a
				publicly owned treatment works or a semipublic sewage disposal system in
				volumes or quantities in excess of those to which a significant industrial user
				is committed in the treatment agreement described in 567-subrule 64.3(5) or a
				local control mechanism in the case of a POTW with a pretreatment program
				approved by the department is prohibited.
(7) Wastes in such volumes or quantities as
				to exceed the design capacity of the treatment works, cause interference or
				pass through, or reduce the effluent quality below that specified in the
				operation permit of the treatment works are considered to be a waste which
				interferes with the operation or performance of a publicly owned treatment
				works or a semipublic sewage disposal system and are prohibited.
(8) Discharge of the following pollutants to
				a publicly owned treatment works, a semipublic sewage disposal system, or a
				private sewage disposal system is prohibited:
a. Pollutants which create a fire or
				explosion hazard including but not limited to waste streams with a closed cup
				flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade using
				the test methods specified in
				40 CFR
				26121.;
b. Solid or viscous substances in amounts
				that will cause obstruction to the flow in the treatment works resulting in
				interference;
c. Heat in amounts
				which will inhibit biological activity in the treatment works resulting in
				interference but, in no case, heat in such quantities that the temperature of
				the waste stream at the treatment plant exceeds 40 degrees Celsius (104 degrees
				Fahrenheit) unless specifically approved by the department;
d. Petroleum oil, nonbiodegradable cutting
				oil, or products of mineral oil origin in amounts that will cause interference
				or pass through;
e. Pollutants
				which result in the presence of toxic gases, vapors, or fumes within the
				treatment works in a quantity that could cause acute worker health and safety
				problems; and
f. Pollutants which
				will cause corrosive structural damage to the treatment works but, in no case,
				discharges with a pH lower than 5.0 standard units, unless the treatment works
				is specifically designed to accommodate such discharges, or wastes which would
				intermittently change the pH of the raw waste entering the treatment plant by
				more than 0.5 standard pH units or which would cause the pH of the raw waste
				entering the treatment plant to be less than 6.0 or greater than 9.0 standard
				units.