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Industrial Pretreatment Program

To ensure protection of the sanitary sewer system and the two (2) Advanced Wastewater Treatment (AWT) plants in Indianapolis, CWA Authority, Inc. (Authority) regulates the discharge of industrial wastewater into the collection system. The Authority is responsible for the implementation of the federal Industrial Pretreatment Program (IPP) in Indianapolis. The following documents provide the legal authority and background for the program. 

To report a spill into the sewer system, please call (317) 402-8636.

Legal Authority and Background

pdf EPA Approval of CWA Authority Pretreatment Program letter

pdf Enforcement Response Plan 2017

pdf Indianapolis NPDES Permit IN0023183 Final 2018

Wastewater rates

pdf CWA Resolution 1-2011

pdf CWA Resolution 2-2011

pdf CWA Resolution 3-2011

Forms

pdf Dental Amalgam Compliance Report

pdf Emergency Discharge Application

pdf Hazardous Waste Statement

pdf Industrial Discharge Permit Application

pdf Liquid Waste Hauler Permit Application

pdf Special Discharge Application

pdf Wastewater Survey

Historic Documents

pdf CWA Authority Pretreatment Delegation application_26 November 2012 (with Local Limits Evaluation)

pdf CWA Authority Pretreatment Delegation Request Cover Letter

pdf Indianapolis NPDES Permit IN0023183 Final 2007

pdf Local Limits 2012

pdf Indianapolis NPDES Permit IN0023183 Final 2013

pdf NPDES modification to CWA Authority IN0028183

Questions about Pretreatment?