helpful links

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Boulder County

https://www.bouldercounty.org/environment/water/septicsmart/

https://www.bouldercounty.org/environment/water/septicsmart-understanding-onsite-wastewater-treatment-systems/

Arapahoe, Adams, & Douglas County

https://www.tchd.org/269/Septic-Systems

Gilpin County

http://www.co.gilpin.co.us/CommunityDevelop/Septic/Septicgeneralpage.htm

Jefferson County

https://www.jeffco.us/public-health

Clear Creek County

http://www.clearcreeksheriff.us/index.aspx?NID=610

Weld County

https://www.weldgov.com/departments/health_and_environment/environmental_health/septic_systems/

https://www.weldgov.com/departments/health_and_environment

Larimer County

https://www.larimer.org/health/clean-air-water-and-soil/septic-systems-owts

https://www.cpow.net/