Storm damage recovery

Apply for Batch Discharge Authorization to the Sewer or Stormwater Systems

Batch discharge authorizations are issued to businesses or projects that need to discharge to the sanitary sewer or, in rare cases, to the stormwater system. Discharges are limited in volume and duration and are often for specific or infrequent operations. Learn how to apply for authorization.
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The City's Role

The federal Clean Water Act requires cities to set rules and regulations to protect the city's sewer and stormwater systems and its watersheds. Environmental Services works with businesses and industries to meet these requirements.

Rules and Regulations

Summary of Batch Discharge Requirements

  • Batch discharge authorizations limit the types and amount of pollutants in the wastewater. See Table 1 in the authorization procedure.
  • Batch discharges can only occur during dry weather (period without rain in previous 8 hours).
  • Flow rates must be equal to or less than 50 gallons per minute (gpm). Any flow greater than 50 gpm requires modeling and analysis and may not be approved.

How to Apply

  1. Download and complete the Batch Discharge Authorization Application
  2. Email completed application to
    Emailed applications are preferred.

    You can also mail it to:
    City of Portland Environmental Services
    Water Pollution Control Lab
    Attn: Batch Discharge Program
    6543 N Burlington Ave
    Portland, OR 97203-5452
  3. Please allow a minimum of two weeks for processing. Incomplete or unsigned applications cannot be processed.

Fees and Charges

(Valid through June 30, 2024)

Batch Discharge Authorizations are currently $185 each.

Construction Dewatering Permits are $320 each.

If applicable, the batch discharge volume to the sanitary sewer will charged at the fiscal year's commercial/industrial sewer rate. The current sewer rate $12.79 per 100 cubic feet.


Batch Discharge Requests – Sanitary and Combined

Brittany Grimes

Construction Dewatering Requests – Sanitary and Combined

Brie Huls

Batch Discharge and Construction Dewatering Requests – Stormwater

Stacy Hibbard