Onsite Wastewater Treatment Systems

About On-site Wastewater Treatment Systems:

Some homes are not connected to a sanitary sewer and must use alternative means to dispose of wastewater on their property. These systems are called Onsite Wastewater Treatment Systems (OWTS), previously known as ISDS or septic systems. The system typically includes a watertight tank that receives wastewater from the home plumbing system and is then discharged to a soil treatment area where the effluent is filtered and treated by the soil. An OWTS is like any other piece of equipment and needs to be maintained and monitored on a regular basis. It is the responsibility of the homeowner to maintain the OWTS and keep it in good working condition. Routine maintenance and periodic pumping of the tank are required.

Regulations and Permitting:

The Clear Creek County Board of Health approved a fee increase to take effect on January 1, 2019. The new fees will be effective starting January 1, 2019. The impacted fees are as follows:

Major Construction Permit (more than one component) - $1,023
Minor Construction Permit (one component only) - $600
Hourly Rate - $65

All other fees will remain the same.

If you have any permits that are waiting on submittal, I would suggest getting them in before the end of the year. Please keep in mind the County will be closed on Monday, December 31, 2018. Therefore, the last day to pay the lesser fees would be Friday, December 28th. Please also note that it must be a complete submittal for us to accept it (meaning we would need application and engineering).

OWTS in Clear Creek County are regulated by the Clear Creek County Onsite Wastewater Treatment System Regulations. These regulations were derived from Regulation number 43 which was adopted by the state of Colorado in 2013. The purpose of these regulations is to preserve the environment and protect public health and water quality; to eliminate and control causes of disease, infection, and aerosol contamination; and to reduce and control the pollution of the air, by establishing and rules for On-site Wastewater Treatment Systems (OWTS) within the jurisdiction of Clear Creek County. All OWTS work (installations, repairs, and upgrades) is to be performed under an issued permit. All contractors and systems cleaners need a license to work on Onsite Wastewater Treatment Systems in Clear Creek County. All OWTS stages of installation (open hole, component and final grade and cover) must be inspected by a Clear Creek County Environmental Health Specialist. Please view the Construction Permits page for more information.


During the months of April – October it may take several business days before receiving an inspection due to increased volume. The inspection line is checked at the beginning of each business day. If it is a system that requires an emergency repair inspection, please note so on your voice message.

Please see information links for all permitting, application and licensing forms.

If submitting electronically, please e-mail Environmental Health all required applications and engineering. A valid phone number for the person responsible for payment is necessary to process the application. DO NOT PROVIDE CREDIT CARD NUMBERS VIA EMAIL OR LEAVE THEM ON VOICEMAILS. Upon receiving the application, you will be contacted by the department to collect payment.

To speak with an Environmental Health Specialist while submitting an application, an appointment is highly recommended. Please contact Denise Tennant to make an appointment at 303-679-2428. 


Current OWTS Regulations and Fact Sheets

Clear Creek County Onsite Wastewater Treatment System Regulations
Promoting Healthy Septic Systems (PDF)
Septic Tank Maintenance Log (PDF)

New Construction and Repair Permit Application Forms

OWTS Application Packet (PDF)
Construction Site Sanitation Agreement (PDF)
Zoning Verification Form
Land Owner Authorization Form (PDF)

Variance Applications

To obtain a variance application you must contact Charlotte Hampson at 303-679-2420.

Use Permit Application Forms

Use Permit Application (PDF)
Use Permit Inspection Report (PDF) (to be filled out by NAWT or NSF inspectors only)

Operating Permit Application Form

 Operating Permit Application

Industry Contact List

(Note: Contractor lists updated weekly) 

Licensed OWTS Contractor List (PDF)
Licensed OWTS Cleaner/Pumper List (PDF)
Clear Creek County Transfer of Title Inspectors (Use Permit Inspectors) (PDF)
Clear Creek County Service Providers (Operating Permit Contract Providers) (PDF)
Colorado Licensed Professional Engineering Companies List (PDF)

If you are interested in becoming licensed in Clear Creek County, contact Denise Tennant at 303-679-2428.