OWTS Regulation Revisions Effective June 4, 2018

The Larimer County Board of Health approved revisions to the Larimer County On-Site Wastewater Treatment System Regulations April 19, 2018. The revised regulations will become effective June 4, 2018. Permits issued after that date must meet the new requirements.


A summary of the changes and full version of the revised Larimer County On-Site Wastewater Treatment System Regulations are available below, if you have questions or comments regarding the regulation revisions please contact Chris Manley at cmanley@larimer.org.


Summary of Changes
Revised Larimer County On-Site Wastewater Treatment System Regulations


Septic Application

A septic system or on-site wastewater treatment system (OWTS) is a self-contained, underground wastewater treatment system, most often utilized in rural areas.

The standard septic system involves a septic tank (to hold wastewater from drainpipes until solids settle out in the tank) and a system of pipes that distributes the remaining liquid waste underground over a large area — the leach field. The goal is to make sure that this filtration through the soil is sufficient to clean the wastewater before it reaches drinking water well sources or surface waters.

State and county laws require that a permit be issued by the department prior to constructing or making repairs to a septic system.

Septic Systems

Questions? Contact OWTS

(970) 498-6775