Incentive and Other Program Charges

The following explains the permit categories and charges utilized by MWRA’s Toxic Reduction and Control Department when issuing Sewer Use Discharge Permits (SUDPs). The governing regulations for MWRA’s Sewer Use Discharge Permits can be found on the MWRA TRAC Main Page, the Incentive Program and Other Charges are found at 360 CMR 10.101-10.104. The permit and monitoring charges for fiscal years 2025 through 2029 are also listed below. MWRA’s fiscal year (FY) extends from July 1 through June 30.

Sewer Use Discharge Permit Categories

A Significant Industrial User (SIU) is an industrial discharger who:

1. Is subject to a national categorical pretreatment standard;
2. Discharges an average of 25,000 gallons per day or more of process wastewater to the MWRA sewerage system;
3. Contributes a process wastestream that makes up more that 5% of the average dry weather hydraulic or organic capacity of MWRA’s treatment plant; or
4. Has a reasonable potential for adversely affecting MWRA’s operation or for violating any pretreatment standard or requirement.

Permit Category Descriptions

Monitoring Charge

A monitoring charge is assessed if your MWRA permit, as of June 30, required you to monitor your discharge and report the result to MWRA. There is no monitoring charge for group or combined permits. For more information on how monitoring scores are determined, see 360 CMR 10.102(3).

Multiple Sampling Locations

There is an additional charge for facilities with more than three sample locations. For each three additional sample locations (e.g. 4-6, 7-9), the monitoring charge is increased for SIUs by rates shown in the table below and for non-SIUs by the standard monitoring charge for that category.

Late/Non-report

There is an additional monitoring charge for submitting a monitoring report more than 45 days late, not at all, or without required data.

Permit and Monitoring Charges by Category