Once you have completed the OSSE you will continue to work with a licensed professional to apply for an On-Site Wastewater System. A Septic System Contractor must possess a State of California Contractor’s license (Type A, B, C-36 or C-42) to construct, enlarge, alter, repair improve or replace an individual system.
Please keep in mind that the licensed professional will work with you to install the system but they may have you apply for the permit. See "How to Apply for a Septic Permit" below.
The following setbacks are for any structures to the septic system:
- From Septic Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ft
- From Leach field and Leach field Repair Area . . . . . . . . . . . . . . . 8 ft
- From High Water Mark of Ponds, Steams, Rivers, ect.. . . . . . . . 100 ft
- From Wells, Including Those on Neighboring Parcels . . . . . . . . 100 ft
For property line setbacks, please contact the Nevada County Planning Department or your local jurisdiction Planning Department.
If you wish to apply for a Septic Variance Request, please look through the Procedures for Applying for a Septic Variance prior to submitting the request. Necessary forms and fees can be found below.
Standard System Designs
Locating Your Septic System
The best way to locate your septic system is with a Septic As-Built. An As-Built shows the exact location of your septic system after installation. If you do not have this, please fill out a Public Records Request Opens a New Window. to gain access to files we have on your parcel.
Once you have your As-Built, you can use a simple method of probing the soil with a metal rod or you can hire a professional to find and trace the system's lines. We do our best to retain records of every property in Nevada County, however occasionally we do not have all records on file. If you cannot acquire an As-Built for your parcel, a professional can trace the lines for you
Septic Repair or Failure
If you have an existing septic system that is failing or needs to be repaired, please contact a Licensed Professional for a site visit. The Licensed Professional will determine the issue and will be able to advise you on the next step of the submittal process for septic repairs or new replacements.
Depending on the size of your system and how many bedrooms it is approved for, you may have to either modify your current system so it can accommodate another bedroom or convert an existing bedroom so it is not longer one. Some systems are approved for more than the current number of bedrooms. In this case, you would not have to modify your septic system. Please refer to your approved septic permit to find out how many bedrooms it is approved for.
Accessory Dwelling Units (ADU)
If you are adding a ADU, it is required to have it's own septic tank if it is not attached directly to the original residence. The additional septic tank can be tied into the existing leach field if the total number of bedrooms does not exceed the number of bedrooms that the system was designed for. If the number of bedrooms is greater than the bedroom capacity for the existing system, you will need to apply for an OSSE and a Septic Modification Permit to expand the system or a separate system will need to be installed. Please contact a licensed professional to determine what is right for you.
Section L-11, 3.19.1
If you have any questions on additions, please don't hesitate to contact us.
Septic System Monitoring
The Nevada County Land Use Ordinance requires Pressure Dose and Treatment Systems to be monitored annually by a certified Septic Service Provider. Prior to finalizing of these systems, the parcel owner is required to record a Right of Entry (Maintenance and Monitoring) Agreement Opens a New Window. and apply for a Certificate of Operation (Annual Permit) Opens a New Window. for either Pressure Dose Opens a New Window. or Treatment System Opens a New Window. . Forms and fees can be found below.
- OWTS Certificate of Operation Application
- Right of Entry (Maintenance and Monitoring) Agreement
- Auxiliary Pump Guidelines
- Septic Variance Application
- Renew a Septic Permit
- Centralized System Guidelines (Cannabis Operations)
- On Site Wastewater Treatment Systems (OWTS) Local Area Management Plan (LAMP) Regulations
Includes Application Fee, Review and Approval
|Standard Septic System Permit - Gravity Flow||$582.40|
|Non-Standard Septic System Permit
Pressure Dose, Pumped, Deep Trench, Curtain Drain, Engineered, Hi-Line, Capped
|Non-Standard Septic System Permit with M & M
Sand Filter, Geoflow, Drip, Mound, Advantax, Hoot, ELGEN
|Maintenance and Monitoring Annual Permit||$96.10|
|Septic System Modification||$582.40|
|Septic Tank Replacement Only||$390.20|
|Septic Repair Permit||$390.20|
|Septic Variance Request||$384.40|