Septage Receiving


The Village of Grafton Wastewater Treatment Plant accepts holding tank and septic tank waste from Ozaukee and Washington Counties transported in by septage haulers. Acceptance is limited to domestic septage only.

The septage dumping site is located at the Wastewater Treatment Plant: 1900 Ninth Avenue, Grafton, WI 53024.

All septage haulers are required to have a dumping permit through the Utility Office. There is a $100 annual fee per truck, which includes one gate access card per truck. If lost or stolen, replacement gate access cards are available at a cost of $25/each.

Waste Dumping Hours:

  • Monday - Friday: 6:00a.m. - 5:00p.m.
  • Saturday: 6:00a.m. - 12:00p.m.

Any emergency or after-hour dumping must be approved in advance and separate charges may apply. Dump slips furnished by the Utility Office must be completed for each load and should be turned in weekly at the Utility Office. 

Current Rates (2023):

  • Fixed Charge: $5.00 per load dumped
  • Holding Tank: $7.50 per 1,000 gallons
  • Septic Tank: $45.00 per 1,000 gallons