MSD’s pretreatment program is managed by the Industrial Waste Department which is part of the Regulatory Management Services (RMS) Division. The purpose of MSD’s pretreatment program is to:

• protect the POTWs;
• protect the health and safety of the workers at these facilities;
• protect the sewering / collection system;
• prevent POTW interference and pass through;
• prevent non-compliance of the KPDES permit;
• protect the receiving waters; and
• enhance biosolid reuse and water reclamation.

To accomplish these purposes, RMS inspects, and when appropriate, issues permits to and monitors targeted commercial / industrial discharges. RMS is also responsible for enforcing the applicable discharge regulations. MSD’s ability to implement and enforce its pretreatment program is determined by its legal authority. MSD’s Wastewater Discharge Regulations (WDRs) (, 401K) comprise the legal authority which state law confers to MSD.

MSD owns and operates 39 wastewater treatment plants (WWTPs) throughout Jefferson County. Each of these WWTPs have their own KPDES permits, allowing direct discharge of the treated effluent to a receiving stream, but only four of the treatment plants have permitted commercial/industrial discharges in their collection systems. Therefore, MSD manages the pretreatment program for four WWTPs. To accomplish this mission, IWD has three functional areas:

1. Inspection / Enforcement;
2. Permits (including Quality Charge and Plan Review); and
3. Field (including Monitoring / Sampling and Emergency Response).

Pretreatment continued

Pretreatment Index