Welcome to RMA

The Resource Management Agency strives to ensure that its customer service standards are consistent with the Agency’s Mission Statement:

The mission of the Resource Management Agency, in cooperation with the public and our partner agencies, is to protect the consumer and community’s health, safety, and environment by carrying out adopted laws and policies, and educating, assisting, and empowering Ventura County residents and businesses to be good stewards of the land and our resources.


In addition, RMA has identified those core values which will guide us in carrying out our mission. These values are directly related to our customer service and include:

  • Honesty, hard work, and ethical behavior

  • Transparency and accountability

  • Equitable treatment and respect of all constituents

  • Excellence in service delivery

sptic tank

An onsite wastewater treatment system (OWTS), also referred to as a septic system, is used for the disposal of wastewater from structures that do not have access to a public sewer / wastewater treatment utility. The Environmental Health Division (Division) Liquid Waste Program is tasked with protecting public health and the environment from the potential adverse health and environmental impacts associated with OWTS. 

Liquid Waste Program staff review OWTS design proposals and design criteria, and inspect both new OWTS construction and repairs of existing systems to ensure conformance with all applicable codes. There are three basic applications for OWTS in Ventura County: 1) design review/approval for new conventional and alternative systems, 2) construction or repair permits for conventional and alternative systems, and 3) certifications of existing systems.

Please click the link below to view document imaged information for OWTS in the County:

Click here for:   Online Record Search

Need to schedule an inspection?

Call the OWTS Inspection Hotline at (805) 477-7136.
Due to the high volume of requests, inspection appointments make take up to two business days to schedule. 

Experiencing issues with your septic system due to heavy rains?
Please see our guidance document for assistance:  Heavy Rainfall Events & Issues with Septic Systems

The State of California is experiencing a housing crisis and has passed legislation to help address this issue. Please read this handout on Frequently Asked Questions: OWTS and Accessory Dwelling Units (English) | (Spanish) for information on septic systems and accessory dwelling units (ADU) in the unincorporated areas of Ventura County. 


Instructions for Submitting Your OWTS Application:

  1. Complete the appropriate application and ensure all associated documents have been completed (i.e., soils report, site plan, legal declarations, etc.). Please read applicant instructions printed at top of the application carefully for a complete list of required documentation for each application. Incomplete applications will not be processed. Click on the boxes above to find the applications and additional forms/information required for your submittal.

  2. There are three options to submit an OWTS application packet:
    • OPTION 1 - Electronic Submittal:
      Submit application and all required documents to this email address: This email address is being protected from spambots. You need JavaScript enabled to view it. . There is a 10MB size limit on emailed documents. Larger files may need to be compressed or shared in a Dropbox / SharePoint link, or, you may need to mail/deliver hard copies of plans or lengthy reports. Once received, your application will be processed, and, an invoice will be generated. Liquid Waste staff will contact you with the invoice number so you can pay online. There is no option to pay online without an invoice number at this time. PLEASE DO NOT EMAIL YOUR SUBMITTAL DIRECTLY TO STAFF. 

      Submit in-person at the Division’s Public Counter. The Division's Public Counter is located on the 3rd floor of the Hall of Administration at the Government Center located at 800 S. Victoria Ave., Ventura, CA 93009-1730. 

    • OPTION 3 - Submit by Mail:
      Submit application, all required documents, and applicable review/permit fee to the Ventura County Environmental Health Division 800 S. Victoria Ave., Ventura, CA 93009-1730. Applications submitted via mail without the correct review/permit fee payment will not be processed and will be returned to the applicant.

  3. Once the application, all required documentation, and the review/permit fee has been received, the Liquid Waste staff specialist assigned to the project will contact you.

Click here for the Current OWTS Fee Schedule

Do you have OWTS technical questions and want to meet with Liquid Waste Program staff in person?

Contact the Liquid Waste Program staff to schedule an appointment! Please see the information below to contact the Liquid Waste Program staff assigned to your project area:

This email address is being protected from spambots. You need JavaScript enabled to view it.  (805) 662-6520

Casitas Springs, El Rio, Fillmore, Frazier Park, La Conchita, Lockwood Valley,
Malibu, Ojai, Oxnard, Piru, Saticoy, Santa Paula, Ventura 

This email address is being protected from spambots. You need JavaScript enabled to view it.         (805) 654-2802

Bell Canyon, Camarillo, Chatsworth, Hidden Valley, Moorpark, Newbury Park, Santa Rosa Valley, Santa Susana, Simi Valley, Somis, Thousand Oaks, Westlake Village 

Email to Submit  Application 

This email address is being protected from spambots. You need JavaScript enabled to view it.

The Division is the authority with jurisdiction for OWTS in unincorporated Ventura County only. If your system is located within city limits, please contact the appropriate city building department for information on OWTS permits or to report a complaint related to an OWTS.

The Division also does not have jurisdiction for OWTS serving mobile homes parks; contact the California Department of Housing and Community Development Southern Area Office at This email address is being protected from spambots. You need JavaScript enabled to view it. or (800) 952-8356.

Liquid Waste Program staff do not perform OWTS assessments for real estate transfers.