Environmental ComplianceGirl at Drinking Fountain

The Environmental Compliance Division:

  • protects the wastewater treatment plant and its biological processes from interference, pass-through, and contamination
  • ensures wastewater discharges of industrial users comply with federal regulations.


Large industrial dischargers (with 25,000 gallons per day or more of wastewater flow and/or significant loadings of total suspended solids and biochemical oxygen demand) are regulated through a Significant Industrial User (SIU) permit system.  


Permits and Regulations

Permit violators are subject to fines and penalties, including the possibility of termination of sewer service.  Escalation in penalties is in accordance with the Enforcement Response Plan. Environmental Compliance currently maintains approximately 50 SIU Permits.


Smaller industrial users are regulated under Special Permits, issued for cases such as infrequent discharges or specific process materials.  Ten special permits are currently maintained by Environmental Compliance.  Also, the division maintains 16 Groundwater Discharge Permits to control pollutant sources from groundwater remediation sites.  Many of these sites are contaminated because of prior leaks from underground fuel tanks.  


Environmental Compliance regulates truck-hauled wastewater through both permits and a manifest system, which requires documentation of the source and type of hauled wastewater.  Currently, 15 wastewater haulers are permitted to discharge at the Regional Wastewater Control Facility.


Environmental Compliance also:


Finally, the Fats, Oils, and Grease (FOG) Control Program is implemented by the Environmental Compliance division.  Over 800 food service establishments are inspected annually to ensure insoluble material entering the system comply with Stockton Municipal Code Chapter 13.40 (FOG Control Ordinance).



External Links

California State Regional Water Quality Control Board

United States Environmental Protection Agency


This City of Stockton web page last reviewed on --- 11/25/2015