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Septic Systems
Tri-County Health Department (TCHD) will be dissolving at the end of the year on December 31, 2022 into three independent public health departments serving Adams, Arapahoe, and Douglas Counties. For OWTS professionals that work in those three counties, TCHD will be communicating with the industry towards the end of 2022 as to where to direct permitting questions and activities in each of the three counties. Continue to monitor this website for more information. |
ENVIRONMENTAL HEALTH PUBLIC COUNTER ASSISTANCE HOURS:
Walk-ins are welcome Tuesdays & Thursdays only – 8:00am to 5:00pm
We are closed for lunch from 12-1pm
- Email ehwebfillableforms@tchd.org to request an inspection or to submit completed applications, designs, and other paperwork.
- TCHD staff are still taking complaints/concerns of public health significance.
On-Site Wastewater Treatment Systems
An On-Site Wastewater Treatment System (OWTS), commonly known as a septic system, treats the wastewater on an individual’s property. Septic systems are installed on properties that cannot be served by a wastewater utility. Tri-County Health Department permits the installation, repair, and use of these systems in our jurisdiction.
Attention!
Effective October 1st, 2019, all Onsite Wastewater Treatment System designers, soil evaluators, installers, inspectors, operation and maintenance providers, and pumpers will be required to obtain the National Association of Wastewater Technicians (NAWT) training course for the discipline they want to work in. More information about upcoming classes is available at www.cpow.net. For more information contact your local field office.
Information, Permits and Forms
- Rules & Regulations – CDPHE Regulation 43 and local Regulation O-17
- Septic Permit Process – Information on how to apply for a septic permit
- Use Permits - permits for a transfer of title
- Proper Land Application of Septage Brochure
- OWTS Forms
- Education & Care – Information on how to maintain and care for your septic system
- Septic Professionals – Additional educational information for septic professionals
- List of Certified Professionals – Find a certified professional for all of your septic needs
- Fees (PDF)
- Septic System Record Search - Look up existing septic system records
Contact Us
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Environmental Health Offices
Aurora
15400 E. 14th Place
Phone: 303-363-3055
Castle Rock
410 South Wilcox Street
Phone: 303-846-2027
Commerce City
7190 Colorado Blvd, Ste 200
Phone: 303-288-6816
Greenwood Village
6162 S. Willow Drive
Suite 100
Phone: 720-200-1670
- How do I get a permit to build a new, or repair an on-site wastewater treatment system (OWTS)?
- Under what conditions must an on-site wastewater treatment system (OWTS) be designed by a Colorado Licensed Professional Engineer?
- How do I get a Use Permit?
- Who can do Use Permit inspections?
- I am selling my property and need to get my waste water system certified. What should I do?