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wqap@tceq.texas.gov
You are here: Home / Permits, Registrations, and Reporting / Wastewater Treatment / Pretreatment / CIUs in Non-approved Pretreatment Programs and Their Reports

CIUs in Non-approved Pretreatment Programs and Their Reports

Requirement to send reports for categorical industrial users discharching to publicly owned treatment works (POTWs) without an approved TPDES pretreatment program to TCEQ.

If the publicly-owned treatment worksExit the TCEQ (POTW) does not have an approved TPDES pretreatment program, certain industries designated as "categorical industrial users" (CIUs) are still required to comply with applicable wastewater discharge reporting requirements:

  • Because the POTW does not have an approved pretreatment program, CIUs must send the required reports to the Texas Commission on Environment Quality (TCEQ) Pretreatment Program.

  • Through a local ordinance or some other control mechanism, a POTW may also require that the CIU sends a copy of each report to them.