- Home Page
- Departments
- Health Department
- Environmental Health
- Septic Systems
Septic Systems (OWTS)
Septic Smart Tips
2022 OWTS (or "Septic") Regulations for Delta County
2022 DELTA COUNTY ONSITE WASTEWATER TREATMENT SYSTEM (OWTS) REGULATIONS
APPENDIX A- LOCAL OPTIONS
APPENDIX B- STATE REGULATIONS (Incorporated "by reference")
"NEW REGS- Frequently Asked Questions" (updated 11/2/22)
UPDATED Graywater FAQs (1/15/23)
Feedback? 
Septic Systems- Getting Started:
| OBTAIN A COPY OF AN EXISTING PERMIT |
Other Documents to Get You Started
ENGINEERS- Register https://forms.gle/RPLA381RE3czKtpeA |
|
| NAWT certified inspectors are noted on the OWTS Installers and Cleaners list (click on the hyperlink above). NAWT report form |
Policy & Recommendations for Sodic Soils in Delta County EHPR22-03.1.1 | Graywater systems are allowed only in counties that have adopted Graywater Regulations. Delta County is looking at the possibility of adopting regulations in the winter/spring of 2023. Learn more about graywater in Colorado or download our Delta County Graywater FAQ's. |
Would You Like to be a Septic System Installer in Delta County?
It is time to renew your County registration information for 2023. If you are an OWTS installer or cleaner, you may be eligible to waive your 2023 license fee. You can go to: https://bit.ly/2023OWTSExam to access the registration form and exam if it is required based on the services you offer. Any installer that is unlicensed will need to get licensed before an installed system is permitted.
The license renewal fee is $50 per year. As allowed by the OWTS regulations, a late fee of $50 will be charged for all renewals received after January 31, 2023.
New to Delta County or Planning to Develop a Property?
Get Development Permit Information to help you get things done in the right order.
Building in a Floodplain?
All development within designated flood plains requires a permit from the Delta County Environmental Health Division prior to installing any septic system. The property owner is responsible for ensuring this determination takes place. If you think that you will be building in or near a floodplain, you can easily search for the floodplain status on the FEMAs website. Floodplain FIRM (Flood Insurance Rate Maps) are downloadable or contact Environmental Health at 874-2165 to obtain information regarding flood plain development. A flood plain application is required (fillable PDF application), and a flood plain checklist (pdf) is available for developers to guide the process. The floodplain application fee is $250.00.
Other Resources and Guidelines:
- CW9 Soil Type R Long Term Acceptance Rate Policy.
- Design using chambers.
- Infiltrative surface.
- Composting toilets.
- Variance requirements from OWTS to a Well.
- Variance requirements from OWTS to a Cistern.
- Vertical Isolation and Media Depth Chart.
- Mound system guidance document. Needed when building in high-water table or floodplain.
- Mound system spreadsheet. Useful when calculating dimensions for the mounded system.
- Wastewater site application Policy 6. Needed when installing multiple systems in close proximity.
Other useful guidance for installers and Engineers:
- Non-pressurized drip dispersal system design document. NDDS are typically used in clay soils with poor percolation rates by providing appropriate effluent distribution for absorption with incidental evapotranspiration.
- OWTS design plan review checklist. What it says...
- Evaluating sand gradations. Requirements for sand imported into a soil treatment area, sand filter, or mound system; (43.11.C.2.d)
- Sand gradation graph. For gradation of sand.
- PVC pipe informational document. “How PVC pipe is identified, and what it means”
- Discharges from marijuana facilities information.
- Power outage - OWTS guidance.
- Post-wildfire - OWTS guidance. GUIDANCE FOR PROPERTY OWNERS IMPACTED BY WILDFIRES WITH HOMES SERVED BY WELLS AND ONSITE WASTEWATER TREATMENT SYSTEMS