I am unsure where my onsite waste water treatment system (OWTS) is located. Do you have records of my system?
Tri-County Health Department (TCHD) maintains records for existing septic systems in Adams, Arapahoe, and Douglas Counties and can provide you with an as-built drawing of the system which will show the location. Contact one of our four Environmental Health offices to answer any of your questions. Please keep in mind that TCHD may not have record of all septic systems due to age or permit status. In this case it may be necessary to contact a licensed installer or a certified Use Permit inspector to locate your system.

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1. How do I get a permit to build a new, or repair an on-site wastewater treatment system (OWTS)?
2. Under what conditions must an on-site wastewater treatment system (OWTS) be designed by a Colorado Licensed Professional Engineer?
3. How do I get a Use Permit?
4. Who can do Use Permit inspections?
5. I am moving and need to get my septic system certified. What do I do?
6. What is the minimum lot size for an on-site wastewater treatment system (OWTS)?
7. How often do I need to pump my septic tank?
8. Will I be able to irrigate or have horses where my Soil Treatment Area (STA) is located?
9. Can I install a bathroom in a garage, barn, etc., and connect it to my existing on-site wastewater treatment system (OWTS)?
10. I am unsure where my onsite waste water treatment system (OWTS) is located. Do you have records of my system?
11. I accidentally damaged some components of my septic system. Who should I call to inspect and repair the damage? Do I need a permit?