The provisions of this chapter are enacted to aid in the enforcement of the pretreatment regulations set forth in this chapter and may be placed in a separate portion of the municipal or county code of any WRA participating community which adopts these provisions. Each WRA participating community by enacting this chapter designates the WRA and its operating contractor as the enforcement agency under this chapter. Employees, agents and officers of the WRA and of its operating contractor, while acting to enforce this chapter for the WRA, are empowered to make such inspections, issue such orders or permits and take such actions within the corporate boundaries of the City within the boundaries of the sanitary district as are authorized by this chapter. The WRA or its operating contractor is also authorized to impose and collect all fees or penalties authorized by this chapter, and are authorized to directly bill and collect from contributors penalties, fees charges and surcharges from all users within the City. A user's failure to pay any fee, charge, penalty or surcharge is a municipal infraction and shall also be grounds to discontinue sewer service to the user, all as hereafter more particularly provided. The enforcement of this chapter in the sanitary district is not dependent upon passage of this chapter or a similar ordinance by other WRA participating communities.