Liquid Waste Haulers

Monterey One Water has a designated Liquid Waste Receiving Facility for the discharge of hauled or trucked liquid wastes. Discharges are often concentrated, potentially having a negative impact on the treatment plant operations or causing pass through if discharged directly into M1W's headwords intake. Discharge at M1W's Liquid Waste Receiving Facility is accepted under strict requirements (pH, toxicity, etc.) so the collected liquid wastes can be slowly filtered into the influent waste stream, preventing treatment works upset.

To manage the discharge requirements, M1W only accepts liquid waste from permitted haulers.  Accepted sources include: chemical toilets; septage; restaurant grease; biocell (oily waste); certain special wastes (storm drain pump outs; corn starch dye; wine waste; vegetable waste: artichoke and grape pulp); and salt brine solutions. Submission of a completed M1W liquid waste manifest is required to document the discharge of any load.

How to Become a Permitted Hauler

To become a permitted liquid waste hauler, please download, complete, and return the M1W Liquid Waste Hauler Permit Application packet. You will also need to provide M1W with the following information:

  • New Hauler Permit Application, Signed and Certified
  • Certificate of Worker's Compensation Insurance, or M1W Worker's Compensation Insurance Declination Form
  • Certificate of Automobile Insurance, M1W listed as additional insured at:
    Monterey One Water
    5 Harris Court, Building D
    Monterey, CA 93940
  • Certificate of General Liability Insurance, M1W listed as additional insured at:
    Monterey One Water
    5 Harris Court, Building D
    Monterey, CA 93940
  • Completed Truck List in Microsoft Excel Format
    Note: Vehicles not listed on this truck list will be turned away without the ability to discharge until they are added to the permit.
  • County of Monterey Non-hazardous Liquid Waste Vehicle Inspection Form
    Note: For more information on this program, please contact MCHD at (831) 755-4500
  • Safety Data Sheets (SDS) for all chemical deodorants utilized

Application materials should be sent to M1W at the attention of

Sarah Stevens
Monterey One Water
ATTN: Sarah Stevens
5 Harris Court, Building D
Monterey, CA 93940

Following review and approval of the submitted documents, M1W will issue a permit number unique to your business. This number is non-transferrable. You should affix the permit number in 4-inch, contrasting lettering to both sides of each vehicle listed in your permit.  You should also affix the permit sticker issued by Monterey County Health Department as part of your vehicle inspection to the front windshield.  Trucks without a valid Monterey County permit sticker will be turned away without discharging until such a time that the sticker is properly displayed.

At this time, you should place two checks on deposit ($200 permit fee and $1,000 binder fee), payable to M1W at our Administration Building via hand delivery, courier, or regular mail at:

Monterey One Water
ATTN: Becky Crout
5 Harris Court, Building D
Monterey, CA 93940

Subsequently, M1W will schedule a time to complete a visual inspection of each of the permitted vehicle(s), sequentially or all at once, to ensure compliance with all M1W requirements.  At this point, our staff will also lead you through discharge operations. 

Any additional questions about M1W's Liquid Waste Permitting Program can be directed to Sarah Stevens at (831) 883-6109 or

2018 Liquid Waste Receiving Hours

Monday – Friday 6:30 am – 4:00 pm Normal Hours
Other Emergencies*
Saturday 8:00 am – 4:00 pm Regular Hours
Other Emergencies*
Sunday Closed Emergencies*
* For emergency incidents we request that you call the Treatment Plant Control Room at (831) 883-6166 as soon as possible and explain the circumstances and the need to dispose during "other" hours. For the holiday schedule, please see

2018 Liquid Waste Rates/Gallon*

Chemical Toilets and Septage $0.085/ gallon
Grease $0.11/ gallon
Oily Wastes, Biocell, Special $0.07/ gallon
Brine with Chemicals $0.05/ gallon
Brine without Chemicals $0.035/ gallon
Annual Permit Fee $200.00 billed annually
Binder (Deposit) Fee $1,000 due at opening of account and refundable upon closure of account, less any outstnding charges
* Last assessed July 1, 2017