The city may suspend the wastewater treatment service and/or a wastewater discharge permit when such suspension is necessary, in the opinion of the city, in order to stop an actual or threatened discharge which presents or may present, alone or in contribution with other discharges, an imminent or substantial endangerment to the health or welfare of persons, to the environment, causes interference, or causes the city to violate any condition of its NPDES permit, or the general water reuse permit, sludge disposal regulations or air quality standards. The city may deny or condition new or increased contributions of pollutants, or changes in the nature of pollutants, to the POTW by industrial users where such contributions do not meet applicable pretreatment standards and requirements or where such contributions would cause the POTW to violate its NPDES permit in accordance with 40 CFR 403.8(f)(1)(i), or the general water reuse permit, sludge disposal regulations or air quality standards.

Any person notified of a suspension of the wastewater treatment service and/or the wastewater discharge permit shall immediately stop or eliminate the contribution. In the event of a failure of the person to comply voluntarily with the suspension order, the city shall take such steps as deemed necessary, including immediate severance of the sewer connection, to prevent or minimize the threat of interference or damage to the community sewers or POTW or the endangerment to any individuals. The city shall reinstate the wastewater discharge permit and/or the wastewater treatment service upon proof of the elimination of the noncompliant discharge. A detailed written statement submitted by the user describing the causes of the harmful contribution and the measures taken to prevent any future occurrence shall be submitted to the city within five days of the date of occurrence. (Ord. 2282 NCS §3 (part), 2007.)