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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) 924-3311.

Legal Authority and Background

Adobe PDF Chapter 671 final August 2011

Adobe PDF Cross Reference between Chapter 671 and CWA Authority Resolutions_29 October 2012

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

Adobe PDF CWA Authority Pretreatment Delegation Request Cover Letter

Adobe PDF Enforcement Response Plan 2011

Adobe PDF Indianapolis NPDES Permit IN0023183 Final 2007

Adobe PDF Indianapolis NPDES Permit IN0023183 Final 2013

Adobe PDF Local Limits 2012

Adobe PDF NPDES modification to CWA Authority IN0028183

Adobe PDF Proposal 61-2011 signed version

Wastewater rates

Adobe PDF MOU between City and CWA Authority

Adobe PDF Pretreatment Program Enforcement and Cooperation Agreement

Adobe PDF IDEM Final Agreed Order for CWA Authority

Adobe PDF CWA Resolution 2-2011

Adobe PDF CWA Resolution 3-2011

Adobe PDF Public Notice

Adobe PDF Comments and Response

Adobe PDF EPA Letter -Streamlining Changes 8-2011

Adobe PDF City-County Countil Proposal 211 SIGNED GO36 2011


Adobe PDF Industrial Discharge Permit Application

Adobe PDF Industrial Discharge Survey

Adobe PDF Liquid Waste Hauler Permit Application

Adobe PDF Special Discharge Applicaiton

Adobe PDF Emergency Discharge Application