Water quality pretreatment

Types of permittees

• Industrial user— indirect discharger.
  • Application.
• Publicly owned treatment works that receive discharges of non-domesticwastes from industrial users.
  • Application.
• Pretreatment non-significant industrial user: Applies to sources of discharge to a POTW in which the user never discharges more that 100 gallons per day (gpd) of total categorical wastewater (excluding sanitary, non-contact cooling and boiler blowdown wastewater, unless specifically included in the pretreatment standard).
  • The following conditions must be met:
    • The industrial user has consistently complied with all applicable categorical pretreatment standards and requirements.
    • The industrial user annually submits the certification required in 40 CFR 403.12(q) together with any additional information necessary to support the certification statement.
    • The industrial user never discharges any untreated concentrated wastewater.
  • ​​Application.​

Other information

• Change of contacts.
• Discharge Monitoring Reports:
  • ​Overview.
  • Training information.
  • Guidance.